To stimulate muscle contraction, acetylcholine is released from the ________ into the synaptic cleft

A) synaptic vesicles
B) sarcolemma
C) terminal cisterna
D) junctional folds
E) sarcoplasmic reticulum


A

Anatomy & Physiology

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Biological half-life is the time required for

A. half of an ionic compound to ionize.?B. half of a radioactive material to be eliminated from the body.?C. radioactivity levels of organic compounds to stabilize at one-half their original value. ?D. radiation exposure that is lethal for half of a biological population.

Anatomy & Physiology

Where is the anterior gray horn?

a) B b) C c) H d) I e) None of these choices

Anatomy & Physiology

What term best describes the relationship between the pronator quadratus and supinator?

A) Fixators B) Prime movers C) Synergists D) Antagonists E) Depressors

Anatomy & Physiology

Label I represents which of the following structures?


A) syncytial trophoblast
B) developing villi
C) lacuna
D) uterine gland
E) amniotic cavity

Anatomy & Physiology