When the testes are exposed to cool temperatures,
A. the scrotal septum opens, allowing the testes to share warmth.
B. the dartos and cremaster muscles contract to bring the testes closer to the body.
C. testosterone production stops.
D. there is an increase in sperm production.
E. None of the choices is correct; the testes are not affected by temperature.
Answer: B
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The term "swollen glands" is usually meant to refer to lymph nodes in which
A. the valves of afferent vessels are bulging. B. macrophages are clogging afferent lymphatic vessels. C. lymphocytes are proliferating in germinal centers. D. phagocytes are consuming the infected lymph nodes. E. macrophages are entering at the hilum.
Which of the following is NOT a short-term response to hemorrhaging?
a. ADH and aldosterone promote fluid retention b. venoconstriction mobilizes venous return c. ADH and angiotensin II enhance vasoconstriction d. Carotid and aortic reflexes increase cardiac output
The ________ suture separates the temporal bone from the parietal bone.
A. coronal B. lambdoid C. frontal D. squamous E. sagittal
Which of the following is a protective function of blood?
A) prevention of blood loss B) maintenance of adequate fluid volume C) maintenance of normal pH in body tissue D) maintenance of body temperature