Postganglionic parasympathetic fibers could be located in:
a. a salivary gland
b. a ciliary ganglia
c. the wall of the heart
d. all of the above
Answer: d. all of the above
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The smooth muscle in arteriole walls can be stimulated either to contract or to relax, thereby either decreasing or increasing the amount of blood flowing through arteriolar beds.
Answer the following statement true (T) or false (F)
. Endocrine glands
A. possess short ducts and secrete their products directly onto the skin surface. B. lack ducts and secrete their products onto the skin surface. C. possess ducts to secrete their products into the bloodstream or into interstitial fluid. D. lack ducts and secrete their products into the bloodstream or into interstitial fluid. E. secrete mucus directly into a body cavity.
Which section comprises the bulk of the small intestine?
A) jejunum B) duodenum C) ileum D) rectum
Which of the following is a characteristic of smooth muscle?
A. Intercalated discs connect adjacent cells B. Found in the walls of the digestive tract C. Attached to the skeleton by tendons D. Fibers are striated in appearance