Which of the following events occurs after all the other steps listed when describing the stimulation of a skeletal muscle fiber?
a. ACh binds with receptors on the muscle cell membrane, opening sodium channels.
b. ACh diffuses across the cleft of the junction.
c. ACh is released by exocytosis.
d. Calcium diffuses into the terminal button.
e. Voltage-gated channels for calcium in the axon terminal are opened.
A
You might also like to view...
Which of the following is a passageway for both air and food?
A. Larynx B. Pharynx C. Esophagus D. Trachea E. Bronchus
Movements of the body are usually smooth and occur at differing rates because
A. of the all-or-none principle. B. most muscle contractions closely resemble individual muscle twitches. C. they are a mixture of isotonic and isometric contractions. D. motor units contract out of phase at their own particular rates. E. muscles of different sizes contract at different rates.
The abdominopelvic regions found on the same plane as the ilium are the
A. inguinal. B. iliac. C. hypogastric. D. a and b. E. a, b, and c.
The cells of the immune system include four types of ______.
Fill in the blank(s) with correct word.