Answer:
Which of the following statements about the cytoskeleton is false?
The cytoskeleton helps organize the cell’s structure and activities
Explanation:
<em>All members of a species that dwell in the same region are referred to as a population. You are a member of your hometown's human population. A freshwater pond is home to a variety of species, including mallard ducks and cattail plants growing on the pond's border. Basically, a population is a collection of individuals of the same species that live in the same geographic region and interbreed. Many animals have several populations that are spread across a wide range of geographic locations.</em>
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It would be the endocrine system
Answer:
Action potential arrives at the axon terminal.
Calcium ions enter the axon terminal.
Synaptic vesicles fuse to membrane of axon terminal.
Acetylcholine is released into the synaptic cleft.
Acetylcholine binds to its receptors on the junctional folds.
Junctional folds become depolarized.
Action potential is initiated on the sarcolemma.
Explanation:
When the electrical signal (action potential) reaches the axon terminal it opens Ca channels that release Ca ions from the outside inside the axon terminal. Ca ions trigger the fusion of vesicle with membrane of the presynaptic cell (axon terminal). As a consequence, neurotransmitter-acetylcholine is released into the synaptic cleft. It diffuses to the postsynaptic cell and binds to its receptor (nicotinic acetylcholine receptor). The binding of acetylcholine leads to the depolarization of the sarcolemma.
