Which of these bones does not contribute to the region known as the pterion?
A. Temporal
B. Parietal
C. Sphenoid
D. Occipital
E. Frontal
Answer: D
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The statement "There is always a synapse in a peripheral ganglion between the CNS and the effector organ" is
A) true only for the parasympathetic nervous system. B) true only for the sympathetic nervous system. C) true for both the parasympathetic and sympathetic nervous systems. D) not true for either the parasympathetic or sympathetic nervous systems. E) true only for the somatic nervous system.
Which ventilates alveoli more effectively: slow, deep breaths or rapid, shallow breaths? Explain why
A) Slow, deep breaths because a smaller amount of the tidal volume of each breath is spent moving air into and out of the anatomic dead space. B) Slow, deep breaths because a larger amount of the tidal volume of each breath is spent moving air into and out of the anatomic dead space. C) Rapid, shallow breaths because a smaller amount of the tidal volume of each breath is spent moving air into and out of the anatomic dead space. D) Rapid, shallow breaths because a larger amount of the tidal volume of each breath is spent moving air into and out of the anatomic dead space.
During isovolumetric ventricular contraction,
a. rapid filling of the ventricles occurs. b. all heart valves are closed c. the maximum volume of blood is ejected. d. the maximum rate of ejection occurs. e. the atria are in systole
Astrocytes structurally support neurons and also provide important signals and nutrients
to neurons. Indicate whether the statement is true or false