Which parts of the testes produce spermatozoa?
A) primordial cells
B) interstitial cells
C) follicular cells
D) seminiferous tubules
D
Explanation:
A) Primordial cells are in the ovaries, not the testes.
B) The interstitial cells secrete testosterone.
C) Follicular cells are in the ovaries, not the testes.
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A tissue transplant from an animal to a human is a(n)
A. autograft. B. syngenetic graft. C. allograft. D. heterograft. E. homograft.
Which of the following describes the function(s) of the skeletal system?
A) It interacts with muscles, providing movement. B) All of the above describe skeletal system functions. C) It protects organs, especially in the head and thorax. D) It stores inorganic salts.
The product of the stroke volume times the heart rate is known as the
A. cardiac reserve. B. venous return. C. end-diastolic volume. D. cardiac output. E. end-systolic volume.
Which of the following are released by damaged tissues and function as intercellular autocrine or paracrine signals?
A. Erythropoietin B. Prostaglandins C. Epinephrine D. Norepinephrine E. Aldosterone