Which embryonic layer gives rise to the lamina propria and muscularis externa?
A. Endoderm
B. Gastric tube
C. Mesoderm
D. Ectoderm
E. Neural crest
Answer: C
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The vitamin that is a coenzyme in amino acid and nucleic acid metabolism is
A) vitamin B5 (pantothenic acid). B) vitamin B6 (pyridoxine). C) vitamin B9 (folic acid). D) vitamin C (ascorbic acid). E) vitamin K.
A child with ________ would be lethargic, shorter than average, have mental retardation, and a low body temperature.
A. dwarfism B. cretinism C. Graves' disease D. Addison's disease
Which of the following helps explain why elderly people have trouble with thermoregulation?
A. Their skin has less collagen. B. The epidermis becomes thinner. C. They have fewer sweat glands. D. They have fewer sebaceous glands.
The fan-shaped ________ muscle, which originates along the ventral and superior margins of several ribs, rotates the scapula so that the glenoid cavity moves superiorly.
Fill in the blank(s) with the appropriate word(s).