The correct answer is Descending tract of the spinal cord carries motor information from the brain to the muscles and glands.
One of the main pathways by which information travels between the body and the brain is the spinal cord. The brainstem continues caudally into the spinal cord.
Descending tract of the spinal cord.
Descending tracts provide motor information from the brain through the spinal cord to the body, such as commands to move the arm.
The primary characteristic of the musculoskeletal system that promotes locomotion is muscular contraction against a relatively fixed skeletal framework. But to move, muscle fibers need the action potentials produced by the spinal motor neurons of the anterior grey horn. Numerous upper motor neuron pathways that start above the level of tells control these lower motor neurons of the anterior grey horn in both conscious and unconscious ways (i.e. cerebral cortex, cerebellum, etc.). The actions of the upper motor neurons provide stimulatory and inhibitory modulation of the activity of the anterior horn cells, and by extension, the activity of the motor system.
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Drugs that facilitate the activity of the synapses of a particular neurotransmitter are said to be __________ of that neurotransmitter. select one:
Drugs that facilitate the activity of the synapses of a particular neurotransmitter are said to be agonistic of that neurotransmitter.
This is further explained below.
What is a neurotransmitter?Generally, Neurotransmitters are a kind of chemical messenger that is necessary for the human body to have in order for it to operate effectively.
Their job is to carry chemical signals, which are often referred to as "messages," from one neuron (nerve cell) to the next target cell along the route.
The following cell that may become the target could be a nerve cell, a muscle cell, or a gland cell. There is a possibility that all three could be involved.
In conclusion, It is claimed that a drug is agonistic for a certain neurotransmitter if it is able to increase the activity of the synapses that are associated with that neurotransmitter.
agonistic
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3. What evidence have you discovered to explain how natural selection
leads to changes in populations of organisms, such as orchid plants?
Some types of the evidence, such as the fossils and the similarities between the related living organisms, were used by Darwin to develop his theory of the natural selection, and are still used by today. Others, such as the DNA testing, were they not available in Darwin's time, but are used by the scientists today to learn more about the evolution.
The Natural selection is the mechanism of the evolution. Organisms that are more adapted to their environment and are more likely to survive and they pass on the genes that was aided their success. This process was causes species to change and then diverge over time. Darwin used multiple lines of the evidence to support his theory of the evolution by the natural selection -- fossil evidence, the biogeographical evidence, and the anatomical evidence.
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Which statement is a hypothesis that would best address the
question, "Are fewer monarchs migrating to Mexico because
many are dying as caterpillars from starvation?"
O Monarch butterflies are likely migrating to different
regions instead of Mexico.
O If monarch caterpillars are dying from starvation, then
reducing predators will help the population recover.
O If fewer monarchs are arriving in Mexico, then
scientists will find larger populations elsewhere.
O If monarch caterpillars are dying from starvation, then planting more milkweed will help the population
recover.
The hypothesis that fewer monarchs migrating to Mexico because many are dying as caterpillars from starvation is best suited by the statement that monarch caterpillars are dying from starvation, then planting more milkweed will help the population recover.
The monarch butterfly or simply monarch is a milkweed butterfly in the family Nymphalidae. Monarch butterflies migrate over extraordinary distances. Monarch butterflies spend the winter in Mexico and along the California coast in North America. A monarch butterfly has a 2,700-mile range (4,345 km).
Pesticides, such as the poisonous neonicotinoids and herbicides that are wiping off the milkweed plants necessary for their survival, as well as urbanization and climate change are all threats to monarch butterflies.
Hence, by planting more milkweed plants their food resources would be replenished nd hence the larva can feed up properly and this will help in increase of their population.
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Which of the following will decrease soil nitrates?
A. Fast growing crops
B. Decomposers
OC. Nitrifying bacteria
D. Lightning
Each of the species of finches on the galapagos islands has its own distinctive ________ and ________.
Each of the species of finches on the Galapagos Islands has its own distinctive beak and ecological niche.
Reason :
Darwin observed that the finches evolved thanks to the difference in their habitat. Consistent environmental differences in several habitats on different islands in the Galapagos, the supply of different foods sources (seeds, cactus, insects, and fruit) promotes directional selection on resident finches for optimal beak morphology which maximizes survival under local conditions.
This process has produced more distinct species of finches, all unique to the archipelago. He noticed that every finch species is having a different type of beak, counting on the food available on its island.
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From which two food groups should teens select the same number of servings each day?
Fruits and vegetables are the two food groups for which teens should select the same number of servings each day
What do number of servings mean ?The quantity of food listed on a product's Nutrition Facts label, also known as the food label, is referred to as a serving. The serving sizes vary between items. Sizes can be expressed as numbers, such as three crackers, or as cups, ounces, grammes, pieces, or slices.
The serving size indicates how much food or liquid an individual generally consumes. It does not suggest how much food or liquid you should consume. It's critical to understand that all nutritional information on labels, including the quantity of calories, refers to serving sizes.Learn more about Servings here:
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A (n) __________is used to transfer dna from one bacterium to another conjugation pilus flagella lipopolysaccharide teichoic acid fimbriae.
The conjugation pilus is used to transfer dna from one bacterium to another.
what is pilus?
Many bacteria have an extension on their surface called a pilus, which resembles hair. Although some researchers reserve the name pilus for the appendage required for bacterial conjugation, the terms pilus and fimbria can be used interchangeably. Oligomeric pilin proteins make up the majority of all pili structures.
DNA can be transferred between bacteria during the process of bacterial conjugation thanks to conjugative pili. Because they allow for the exchange of genes through the development of "mating pairs," they are frequently referred to as "sex pili," in analogy to sexual reproduction.
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An earthquake decimates a ground-squirrel population. The surviving population happens to have broader stripes on average than the initial population. If broadness of stripes is genetically determined, what effect has the ground-squirrel population experienced during the earthquake?.
A Bottleneck effect has the ground-squirrel population experienced during the earthquake,
Bottleneck Effect- The bottleneck effect describes how a population's size is first decreased and then increased and how this changes how genetic diversity is distributed among its members.
Population- A population is the total number of organisms associated with the same species that really are present in a given location at the same time and have the potential to interbreed. Individuals need to be capable of reproducing with any other population members and have fruitful children for interbreeding to happen.
Species- A collection of creatures that can breed with each other in nature and have healthy offspring is referred to as a biological species.
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The tails of the core histone proteins can be chemically modified by the covalent addition of what type of chemical group?.
Answer:
The tails of the core of proteins can be chemically modified by the covalent addition of acetyl, methyl and phosphate.
Histone and DNA have complex interface. Every nucleosome has 142 hydrogen bonds have seen between histone core as well as the DNA. An amino acid backbone of both the histones as well as the phosphodiester backbone of the whole DNA is where about half of these linkages are formed. Condensation of chromatin could be facilitated by methylating the histone tails inside the chromatin. DNA can be accessed for transcription by acetylation of histone tails within chromatin. Certain types of chromatin change could be transmitted to the next cell generations. The DNA is coiled more securely all around histone cores when the histone tails are deacetylated, which makes it more difficult for transcriptional to attach to the DNA. This process, termed as gene silencing, results in lower levels of gene expression.
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The links of all the interconnected pathways of energy and mater flowing through a community is called a?
The links of all the interconnected pathways of energy and matter flowing through a community is called a food web.
Energy is the fuel that any living organism uses to carry out its life processes. All the body functions require energy to be accomplished. Most organisms uses energy in the form of ATP. This energy is formed inside the body by the breakdown of the ingested food.
Food web is the interconnection of all the food chains in the environment. A single organism can be the part of multiple food chains in an ecosystem. Hence there are no fixed trophic levels of any organism in a food web. A food chain is of linear direction, but a food web gas a zig-zag pattern.
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The tactile system is actually made up of two distinct skin senses. please select the best answer from the choices provided t f
The assumption that the tactile system consists of two different skin senses is false.
The tactile sensory systemWe can sense, perceive, organise, and integrate information using the tactile system, which is a component of the nervous system, by using the skin's receptors. The first sense system to form while a child is within the womb is the touch system.What functions do the tactile sensory organs perform?The tactile system is what you can feel with your hands. It's how humans experience the full range of touch sensations, such as pain, temperature, vibrations, and textures. Our bodies have skin-based sensors that communicate with our brains in various ways. We are informed by these indications of what and when we have touched something.learn more about skin senses here
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Answer:
its false
edge2022
During an action potential, the largest increase in sodium permeability occurs at the peak of the action potential waveform.
a. true
b. false
During an action potential, the largest increase in sodium permeability occurs at the peak of the action potential waveform is false.
So, the correct option is (b).
Potassium ions will flow down their concentration gradient, or towards the exterior of the cell, because the membrane is permeable to them. Although the membrane is not permeable to sodium, there is a concentration gradient that favours sodium diffusion in the opposite direction. The action potential is also referred to as a "spike" or a "impulse" by neuroscientists. A depolarizing current causes an explosion of electrical activity known as the action potential.Only recordings with input resistance greater than 5 G were utilised to ensure the correctness of the waveforms captured. Using the pCLAMP6 programme, waveforms were captured and later played back as voltage clamp instructions in other cells.To learn more about waveforms.
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define graph in earth science
Answer:
A graph in earth science is a picture that represents data or specific sets of data in a helpful way.
The feeding mode that is most associated with a fermenter (e.g. goat, rabbit, catfish) is?
The feeding mode that is most associated with a fermenter (e.g. goat, rabbit, catfish) is association with symbiotic microbes.
Symbiotic microbes- Symbiotic bacteria are those that coexist in harmony with one another or with other organisms. Rhizobia, for instance, are responsible for nitrogen fixation in the roots of legumes.
Nitrogen Fixation- The soil is home to a large number of heterotrophic bacteria, which fix large amounts of nitrogen without coming into close contact with other living things. Azotobacter, Bacillus, Clostridium, and Klebsiella species are a few examples of this type of nitrogen-fixing bacteria.
The enhanced nitrogen level in the soil benefits both crops used in the intercropping method.
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The vasoconstrictive effects of blank______ are considered to be responsible for the drug's ability to relieve migraine headaches.
It is believed that caffeine's effectiveness to treat migraine headaches is due to its vasoconstrictive properties.
What causes migraines most frequently?
Although the precise cause of migraines is unknown, it is believed that they are a temporary side effect of irregular brain activity that affects the brain's blood vessels, chemicals, and nerve signals.
How much time do migraines last?An attack's headache phase might last anywhere between four hours and three days. Even though this is unusual, the total duration of a migraine attack—including prodrome, aura, headache, and postdrome—can range from little longer than one day to barely more than a week.Do migraines pose a major threat?Migraines can significantly lower your quality of life and make it difficult for you to go about your everyday activities. Some folks discover they must spend days at a time in bed.learn more about caffeine here
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which of these is a neural change that continues throughout life? plasticity action potential axon all-or-none response
A neural change that continues throughout life it is also known as Neural plasticity or neuroplasticity.
Neural plasticity is defined as the ability of the nervous system to change its activities in response to experience. ‘Neuro’ means neurons that are specialized cells which are used for the transmission of nerve impulses; ‘Plasticity’ means being easily shaped or moulded.
Plasticity is a neural change that continues throughout life. It is used to change or rewire the neuronal mapping of the brain. Neuroplasticity helps your brain to adapt the ability of learning about new things. It helps to boost or enhance brain's activity.
There are two types of brain plasticity.
* Structural Plasticity = It is used to change the physical structure of brain
*Functional Plasticity= It is used to takes up a new function in place of a damaged area of the brain
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A high school student noticed that the house plants growing near his window were
much taller than the plants growing on the other side of his room. He wondered if
the amount of sunlight the plants were receiving was affecting their growth.
What part of the scientific method does this best represent?
Answer:Photosynthesis
Diffusion continues to occur until there is an equal concentration of particles on both sides of a semi-permeable membrane. True or false?.
Answer: True
Explanation:
True or false: osteocytes and osteoclasts develop from the same type of stem cell.
Osteocytes and osteoclasts develop from the different type of stem cell. Thus, the give statement is False.
What is an Osteocytes?
Osteocyte, a cell that exists in the substance of full fledged bone. It possesses a little chamber called a lacuna, which is contained in the calcified framework of bone. Osteocytes get from osteoblasts, or bone-shaping cells, and are basically osteoblasts encircled by the items they emitted.
Cytoplasmic cycles of the osteocyte expand away from the phone toward different osteocytes in little channels called canaliculi. Through these canaliculi, supplements and side-effects are traded to keep up with the suitability of the osteocyte.
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Plant A is receiving sunlight , soil, and regular water, plant B is also receiving sunlight, soil, and regular water. Yet Plant B is ALSO getting fertilizer. Write a hypothesis of what will happen to the plants as they grow over the next few weeks. Hypothesis
A hypothesis expresses clearly the relationship between two variables and what is expected to occur. If plants receive fertilizer, then they will grow taller than plants that do not receive fertilizer.
What is a hypothesis?
When following the scientific methodology, researchers must formulate a hypothesis.
A hypothesis is a scientific conjecture, not verified, that requires corroboration. It is a possibility, not a fact. It is a claim of how it works a relationship between two or more variables.
The researcher hypothesizes to predict what is going on or what is expected to occur.
A hypothesis must,
be clear and comprehensive.express the direct relationship between the involved variables.be objective.be testeable and falsifiableThere are different kinds of hypotheses: descriptive, correlative, differentiative, or causative.
In the exposed example we have
plants A and B exposed to the same environmental conditions ⇒ sunlight , soil, and water.plant B receiving fertilizerThe variables are,
Controlled variables: sunlight , soil, and regular waterIndependent variable: fertilizer presence/absenceDependent variable: plant growthThe hypothesis must explain the relationship of the dependent and independent variables as a cause and effect event. So,
If plants receive fertilizer, then they will grow taller than plants that do not receive fertilizer.
There are several ways in which you can propose a hypothesis like this one. You just need to make sure both variables are mentioned and what the effect of the independent on the dependent variable is.
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PLSSSS HELP ME ASP!!!!
THREE-DIMENSIONAL THINKING What would be the effect on the structure and function of a cell if it were unable to produce mRNA?
Answer:During transcription, the sequence of DNA is transcribed into mRNA. Later, during translation, mRNA sequence is translated into a protein molecule
Explanation:
i did it
Answer:During transcription, the sequence of DNA is transcribed into mRNA. Later, during translation, mRNA sequence is translated into a protein molecule
What are the characteristics of white and gray rami in the sympathetic nervous system?
White rami are preganglionic sympathetic neurons from the T1-L2 spinal nerves. Gray rami are postganglionic sympathetic neurons that link to all spinal nerves. somatic nervous system features (SNS).
What makes up the nervous system?There are two primary sections of the nervous system: The brain and spinal cord make up the central nervous system. All of the body's parts are connected by nerves that emerge from the spinal cord and make up the peripheral nervous system.
What role does the nervous system play?The nervous system facilitates communication between all body parts. In addition, it responds to alterations both inside and outside the body. The nervous system transmits and receives information using both chemical and electrical methods.
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Abnormal levels of __________ may lead to schizophrenia and parkinson’s disease. a. gaba (gamma-aminobutyric acid) b. glutamate c. serotonin d. dopamine please select the best answer from the choices provided a b c d
Answer:
The answer is D. Dopamine.
Explanation:
A neurotransmitter generated in the region of the CNS is called dopamine (CNS).This is a hormone which brain produces that permits neurons to link, which is crucial for the body's neuro-muscular activity. Parkinson is caused by the bulk of the dopamine-producing cells being destroyed, which results in an inability to regulate one's voluntary movements; schizophrenia is caused by an overabundance of dopamine.
It affects a variety of vital bodily processes, such as mobility, memory, rewarding pleasure, and motivation. Numerous neurological & mental health conditions are correlated to dopamine levels that are high or low.
Humans can experience pleasure, happiness, and motivation due to dopamine. When you accomplish something, your brain releases more dopamine, which makes them feel happy.
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The population is the unit of natural selection. group of answer choices
a. true
b. false
The statement is false that the unit of natural selection is population.
Natural selection is the phenomenon that results in evolution. By natural selection, the nature favors those individuals that adapt better to the changing environment and continue to reproduce. The unit of natural selection is an individual and not an entire population. The changes that occur in and individual due to natural selection are heritable.
A population can be defined as a group of similar organisms, that live in the same habitat, depend on the same resources and most essentially, are able to reproduce and produce new offspring among themselves.
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The descriptions of orgasm written by men and women are ________, and pet scans indicate that ________ subcortical brain regions are active in men and women during orgasm.
The descriptions of orgasm written by men and women are similar, and pet scans indicate that the same subcortical brain regions are active in men and women during orgasm.
Orgasm is a sudden feeling of intense pleasure which causes increase in pulse rate, blood pressure, heart beat and spasm of the pelvic muscle.
This spams of the pelvic muscle causes contraction of the lower vagina in women and contraction and ejaculation in the urethra of the men.
There is an increase in the amount of dopamine released by the brain during orgasm. Pet scans have revealed that same subcortical regions in the brain are activated during orgasm in both men and women.
It is seen the amygdala part of the brain is deactivated during orgasm which is associated with fear and anxiety.
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Describe the classification of epithelium in terms of shape and number of layers of cells.
Depending on its shape, epithelium is categorized as follows:
squamous, cuboidal, and columnar.The epithelium is categorized according to the number of cell layers and shape:
Simple epitheliumStratified (or compound) epitheliumPseudostratified epitheliumExplanation:
-Epithelium is categorized according to its shape as follows:
Flat and scale-like squamous epithelial cells are characteristics of the squamous epithelium. They can be found in the oesophagus, the mouth's smooth inner lining, and the lungs' alveoli.
Cuboidal epithelium: Cells in this type of epithelium resemble cubes and have identical height and width. Normally, they develop gland and secretory organ ducts.
Columnar epithelium: Due to their greater height than width, columnar epithelial cells resemble columns. Columnar epithelia can be further broken down into ciliated columnar epithelium, which lines the surface of the airway, and glandular columnar epithelium (forming glands).
-The epithelium is categorized according to the number and structure of cell layers:
A single layer of cells comprises the simple epithelium. The thinness of the epithelial barrier generally enables it to carry out tasks like absorption and filtration. Examples include cells in the bronchi, alveoli, renal tubules, uterus, body cavities, stomach, and small intestine.
A stratified epithelium, also known as a complex epithelium, has many cell layers. The multilayered nature of the stratified epithelia allows it to withstand mechanical or chemical harm. Even when certain cells are damaged and come away from the surface of the stratified epithelium, the underlying tissues are still protected from the outside environment
Although there is only one layer of cells in pseudostratified epithelium, the densely packed cells give the impression of being grouped in layers due to their various sizes. Examples include the ciliated epithelial cells lining the trachea and upper respiratory system..
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Whenever one turns the pages of a book, uses a pen to take notes, or raises one's hand, one's actions are made possible by the _____ nervous system.
Whenever you turn the pages of a book, use your pen to take notes, or raise your hand, you know that this is possible due to your somatic nervous system
What is Somatic nervous system ?The peripheral nervous system, which permeates practically every portion of your body, is divided into the somatic nervous system. This system's nerves transmit data from your senses to your brain. They also transmit orders from your brain to your muscles, allowing you to move.
The sensory-somatic nervous system is made up of the cranial and spinal nerves, and the autonomic nervous system, which connects the central nervous system (CNS) to the internal organs, is made up of sensory and motor neurons.The somatic nervous system regulates voluntary movements, sends and receives sensory information, and participates in reflex actions independently of the central nervous system (CNS), allowing for extremely rapid reflex occurrence. Additionally, they have a track record of accurately predicting crucial life outcomes like education and health.Learn more about Somatic nervous system here:
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Explain active transport.
Explanation:
Active transport is basically like a movement cell because it moves ions or molecules across the cell membrane and into a higher concentration area. It requires energy.
HELP ME OUT ASPPP YOU WILL GET BRAINEST AND 20 points
Answer:
Electron
Explanation:
Electrons are on the outside protons and neutrons are in the middle
help me right a claim evidence reasoning (CER) ?
Answer:
from my opinion na ......