The ion necessary to initiate the release of acetylcholine into the synaptic cleft is

A) calcium.
B) chloride.
C) sodium.
D) potassium.
E) zinc.


A) calcium.

Anatomy & Physiology

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Which of the following is not a muscle of mastication?

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An increase in afterload will cause the heart to remain longer in the period of isovolumetric contraction

Indicate whether the statement is true or false

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Antibodies may promote inflammation through the stimulation of:

cytotoxic T cells suppressor T cells plasma cells and memory B cells basophils and mast cells All of the choices are correct

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________ is a reactant substance that is acted upon by a specific enzyme

A) Amylase B) A substrate C) Maltase D) A catalyst

Anatomy & Physiology