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Hunter-Best [27]
3 years ago
10

The release of ________ to muscle cell receptors triggers muscle contractions. ach serotonin dopamine adrenaline

Biology
1 answer:
horsena [70]3 years ago
7 0

The given blank can be filled with acetylcholine.  

Acetylcholine refers to a chemical messenger, that is, a neurotransmitter, discharged by the nerve cells in various segments of the peripheral nervous system. It monitors the contraction of all the voluntary muscles, like skeletal muscles. It also influences the contraction of the cardiac and smooth muscle.  



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Researchers hypothesized that cocaine is pharmacologically active in primate fetal brain when pregnant primates are administered
pav-90 [236]

Answer:

Option A, Glucose metabolism in the fetal brain increased

Explanation:

Usage of cocaine during pregnancy is prohibited. However, in case if cocaine is taken it disrupts the metabolism as it increases brain glucose metabolism to the level of an adult human being. Since glucose metabolism in brain is a sensitive process, any disruption in it can lead to unaccounted effects such as dysfunctional circulation, and pharmacological effect. Cocaine increases the dopamine by blocking the dopamine transporters thereby increasing the Vmax. Since the brain of a child has all kind of neurochemical components, cocaine intakes by a pregnant woman produces reinforcing effects in brain of fetus and also make it pharmacologically active

Hence, option A  is correct

6 0
3 years ago
What type of boundary causes volcanoes
zvonat [6]

Hot spots, Divergent plate boundaries and Convergent plate boundaries

5 0
3 years ago
Is throwing a curve ball an example of potential or kinetic energy?
shutvik [7]
Throwing a ball is an example of kinetic energy. I do not have any proof or any reasons, but for now I just know that it's kinetic energy. You can also look it up and you'll see the answer automatically. Hope this helps :) If you want any proof, please feel free to ask me thru contact :)
3 0
3 years ago
Coal is considered a nonrenewable resource.<br><br>A) TRUE<br><br>B) FALSE
notka56 [123]

Answer:

true

Explanation:

Coal is a non-renewable energy source because it takes millions of years to form.

5 0
4 years ago
Which ecosystems are found in intertidal zones? Check all that apply. Estuaries tide pools coral reefs kelp forests salt marshes
tatuchka [14]

The ecosystem is defined as the stable interaction of biotic and abiotic factors in the surroundings. The intertidal is a zone of ecosystem found between land and water.

<h3>What is the Intertidal Zone of Ecosystem?</h3>

  • The intertidal zone is defined as the point or site where the ocean meets the land between high and low tides. The zone can be found at any point where the land meets the ocean.

  • The ecosystem found in the intertidal zones are estuaries, tide pools, and salt marshes.

Thus, the intertidal zone supports the ecosystem of marshes, tidal pools, and estuaries.

Learn more about the <u>ecosystem </u>here:

brainly.com/question/1673533

7 0
2 years ago
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