_______ generally causes relaxation of precapillary sphincters.

A. Low CO2
B. High O2
C. Lactic acid
D. Two of the above


Answer: C. Lactic acid

Anatomy & Physiology

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________ is a degenerative condition that is a result of simple "wearing out" of a joint from a sports injury, trauma, repetitive motion, obesity, or just the aging process

A) Gout B) Osteoarthritis C) Bursitis D) Rheumatoid arthritis

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The normal site of fertilization is the

A. fundus of the uterus. B. cervix. C. body of the uterus. D. vagina. E. uterine tube.

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Which of the following best describes the cerebral arterial circle (circle of Willis)?

A) A short anastomosis found in the cerebellum B) An anastomosis surrounding the pituitary gland C) Formed by the superior and inferior sagittal sinuses D) An anastomosis circling the entire cortex E) A portal system connecting the hypothalamus with the anterior pituitary

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Removal of the anterior pituitary would affect the functioning of the ________.

A. pancreas islets in the pancreas B. thyroid gland C. adrenal medulla D. parathyroid gland E. kidney

Anatomy & Physiology