The medial concavity of the kidney is called the __________, which admits the renal nerves, blood vessels, lymphatic vessels, and ureter.
A. medulla
B. corpuscle
C. cortex
D. hilum
E. capsule
D. hilum
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The carotid __________ are baroreceptors in carotid arteries that respond to changes in blood pressure.
Fill in the blank(s) with the appropriate word(s).
Veins
A. may contain valves and are lined with endothelium. B. have thick, many layered walls. C. are described as strong, rigid vessels that always carry oxygenated blood. D. carry blood under very high pressure. E. carry blood away from the heart.
The baby’s first breath is stimulated primarily by:
a. the lack of oxygen in the blood b. the accumulation of carbon dioxide in the blood c. exposure to the “cold” temperatures outside the uterus d. the rigors of the birth process
In a physiology lab, the students designed an experiment to illustrate how the heart responds to changes in blood pressure. Everyone relaxed and then did a headstand. Which of the following observations are consistent with the change in the function of their hearts?
A. Decreased heart rate B. Increased stroke volume C. Increased heart rate D. Decreased stroke volume E. Both decreased heart rate and increased stroke volume