The absolute refractory period of an excitable membrane roughly corresponds to the period when sodium channels are opening and inactivated
Indicate whether the statement is true or false.
TRUE
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The epimysium covering on the outside of the muscle can blend into cordlike ________ or sheetlike ________.
a. nephron and cilia
b. trachea and tendon
c. trachea and renal cortex
d. tendon and aponueroses
e. afferent and arteriole
When contraction occurs,
A) the H band gets smaller. B) the A band remains constant. C) the I band begins to disappear. D) the Z lines move closer together. E) All of the answers are correct.
The epiglottis opens the glottis during the swallowing reflex
Indicate whether the statement is true or false
The pulse pressure is the
a. difference between the systolic and diastolic pressure. b. average pressure throughout the cardiac cycle. c. maximum pressure exerted in the arteries. d. minimum pressure exerted in the arteries. e. change in pressure that can be felt in an artery due to shutting of the aortic valve.