Which feedback system structure receives output from the control center?
a) receptor
b) stimulus
c) response
d) effector
e) efferent pathway
Answer: d
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Which of the following alterations could lead to edema?
a. A fall in capillary blood pressure b. A fall in the concentration of plasma proteins c. Blocked lymph vessels d. Both a and b e. Both b and c
Explain why starch digestion by salivary amylase stops within the stomach cavity
A) Stomach acids inactivate the amylase. B) Gastric amylase assumes the function of starch digestion. C) Starch digestion is completed on reaching the stomach. D) Salivary amylase is inactivated by the high temperature within the stomach.
The body's longest cells are
A) muscle cells. B) connective tissue. C) epithelia. D) neurons. E) neuroglia.
Highly repetitive ______ muscle contractions produce pain more readily than______ contractions do.
a. concentric, eccentric b. eccentric, concentric