The emptying reflex causes the:
a. contracting of the muscles of the bladder
b. relaxation of the internal sphincter
c. relaxation of the external sphincter
d. both A and B above
d. both A and B above
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Which of the following is not an activity which prevents food from entering the trachea or nasal passage?
a. inhibition of respiration b. elevation of the larynx c. positioning of the tongue against the hard palate d. contraction of the pharyngeal muscles e. elevation of the uvula
The _______ muscles antagonize the actions of the hamstring muscles.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements concerning smooth muscle is true?
A. The cells are large and multinuclear. B. Caveolae seem to take the place of the myofibrils. C. It contains many sarcomeres. D. A calcium-calmodulin complex initiates cross-bridge formation. E. It has a well-developed sarcoplasmic reticulum.
In addition to its effects on kidney tubules, aldosterone affects salt and water absorption in the small intestine.
Answer the following statement true (T) or false (F)