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Tresset [83]
3 years ago
13

1. Please describe the signal transmission across a myoneural junction that allows the nervous system to move the muscles of a f

ootball player during a game? Please be detailed with your description. Hint: Review your video worksheets from your lesson for details on nerve impulse transmission. (5 points)
Biology
1 answer:
SSSSS [86.1K]3 years ago
6 0
1. Action potential reaches the axon terminal and depolarizes it.

2. Depolarization opens voltage-gated calcium channels, enabling influx of Ca into the neuron.

3. Calcium binds to specialized proteins on vesicles (containing pre-made acetylcholine) and triggers them to fuse with the neuron membrane at the synapse.

4. Exocytosis of acetylcholine into the synaptic cleft occurs.

5. Acetylcholine diffuses across the synapse and binds to nicotinic receptors on the end plate of the myocyte.

6. Activated nicotinic receptors, themselves ion channels, cause cation influx into the myocyte and generate an end plate potential. This eventually gives rise to the full depolarization within the myocyte that enables contraction.
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Messages are transmitted from your spinal cord to your heart muscles by the
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Answer:The Correct answer is D

Explanation: The Autonomic Nervous System is that part of Peripheral Nervous System that consists of motor neurons that controls the internal organs. The autonomic system controls muscles in the heart, the smooth muscle in internal organs such as the intestine, bladder, and uterus.

Hope this helps : )

4 0
3 years ago
When is cladistics more useful than Linnaean taxonomy?
maks197457 [2]
Hello there. :')

<span>When is cladistics more useful than Linnaean taxonomy? 

</span><span>D.When you want to know ancestral relationships
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3 years ago
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In the absence of oxygen, the pyruvic acid produced during
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Answer:

B. Ethanol

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During absence of O2 pyruvic acid is reduced to ethanol in alcoholic fermentation.

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2 years ago
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The fusion of haploid gametes is called
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Answer:

FERTILIZATION

Explanation:

Fertilization, the fusion of haploid gametes from two individuals, restores the diploid condition. Thus, sexually reproducing organisms alternate between haploid and diploid stages. However, the ways in which reproductive cells are produced and the timing between meiosis and fertilization vary greatly.

5 0
3 years ago
A boy blows up a balloon and knots the end he leaves it on the kitchen counter. His little sister finds it and takes it outside
Diano4ka-milaya [45]

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The balloon will expand or explode (with enough time)

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Charles law states that the volume of a fixed gas is directly proportional to the temperature and pressure. The higher the temperature, the higher the pressure. This will raise the volume, causing the balloon to expand at the very least.

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