The region of a long bone between the end and the shaft is known as the
A) diaphysis.
B) epiphysis.
C) osseophysis.
D) metaphysis.
E) medullary cavity.
D
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The protein that regulates muscle contraction by controlling the availability of active sites on actin is called
A) actin. B) titin. C) myosin. D) tropomyosin. E) nebulin.
Spinal reflexes
A) are monosynaptic and involve only one segment of the cord. B) involve only a single segment of the spinal cord. C) always transmit information to the brain for processing. D) include both monosynaptic and polysynaptic reflexes. E) include monosynaptic reflexes only.
Skeletal muscle fibers
a. have T tubules within their sarcomeres b. have Z lines extending down the middle of the I bands c. contain gap junctions d. have all of the above characteristics e. have characteristics b and c
A major function of the arteries is to serve as a blood reservoir
Indicate whether the statement is true or false