When the diaphragm contracts, lung volume ________.
A. decreases
B. increases
C. stays the same
D. changes depending on circumstances
Answer: B
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The T tubules
a. store Ca2+ b. provide a means of rapidly transmitting ACh to the central portions of the muscle fiber c. provide attachment sites for ACh d. perform b and c e. do not do any of the above
The crista galli of the ethmoid bone serves as a point of attachment for the falx cerebri of the dura mater.
Answer the following statement true (T) or false (F)
The heart muscle is a ________ effector
A) somatic B) sympathetic C) visceral D) afferent E) higher-order
A person suffered burns over a large part of his body. Evaporation of fluid from the surface of burned areas occurs. As a result of the evaporation process, cells will tend to
A. first swell and then resume their original shape. B. rupture. C. swell. D. remain unchanged. E. shrink.