A small, wormlike structure attached to the posteromedial surface of the cecum is the
A) haustra.
B) pancreas.
C) gallbladder.
D) appendix.
E) ileum.
D
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Rigor mortis is caused by
A. deficient acetylcholine receptors. B. depletion of glycogen. C. lack of Ca2+. D. lack of ATP. E. buildup of lactic acid.
How much water loss, at a minimum, would a 150-pound person have to undergo to become dehydrated?
A. Greater than 1.5 pounds B. Greater than 5 pounds C. Greater than 10 pounds D. Greater than 15 pounds
Muscular ridges on the inner surface of the ventricles are called
A) fossa ovalis. B) ligamentum arteriosum. C) pectinate muscles. D) trabeculae carneae. E) None of the answers is correct.
Why does hair turn white or gray with age?
A) The hair is no longer producing carotene. B) The keratinocytes have been damaged. C) Sebaceous gland activity increases, making the hair well lubricated during growth and turning it white or gray. D) The epidermis is dividing faster, making the hair white or gray. E) The melanocyte activity declines, making the hair white or gray.