An investigator who conducts an experiment to determine how changes in pH affect the function of enzymes on digestion is most likely to be a/an ________.
A. neurologist
B. anatomist
C. histologist
D. physiologist
E. engineer
Answer: D
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Compared to the primary bronchi, the secondary and tertiary bronchi have
A) more cartilage. B) less smooth muscle. C) more smooth muscle. D) less cartilage. E) both less cartilage and more smooth muscle.
The baroreceptor reflex would cause which of the following events to occur if the reflex was caused by an increase in blood pressure?
A. Increased parasympathetic stimulation of the heart B. Increased heart rate C. Increased cardiac output D. Increased sympathetic stimulation of the heart E. Increased force of contraction
Which embryonic structure gives rise to the trachea?
A. The conotruncus B. The bulbus cordis C. The pulmonary groove D. The first pharyngeal arch E. The lung buds
P ganglion cells differ from M ganglion cells in that:
A. P cells have center-surround receptive fields B. P cells respond to movement within their receptive fields C. P cells have large dendritic trees D. P cells have large receptive fields E. P cells have color-opponent receptive fields