The esophagus has several variations from the standard plan of the GI tract. These include
A) epithelium of mucosa is stratified squamous.
B) epithelium of mucosa is simple columnar.
C) muscularis externa has some skeletal muscle.
D) epithelium of mucosa is stratified squamous and simple columnar.
E) epithelium of mucosa is simple columnar and muscularis externa may be striated muscle.
C
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A) 2 B) 4 C) 6 D) 8
Which of the choices below is NOT a fate of carbohydrate taken into the body?
A) amino acid synthesis B) direct conversion to a nucleic acid C) lipogenesis D) ATP production E) glycogenesis
Binding sites on the surface of actin allow the formation of cross-bridges with molecules
of A) ATP. B) tropomyosin. C) troponin. D) myosin.
Which of the following is a skin receptor for light touch, movement, and vibration?
A) free nerve endings B) lamellated corpuscles C) Pacinian corpuscles D) tactile