The respiratory membrane of the gas exchange surfaces consists of
A) pseudostratified ciliated columnar epithelium.
B) moist cuboidal epithelium.
C) simple squamous epithelium.
D) ciliated squamous epithelium.
E) surfactant cells.
Answer: C
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The cells of excitable and nonexcitable tissues share which of the following properties?
a. a threshold potential b. a resting membrane potential c. an ability to open the Na+ gates d. all of these answers. e. none of these answers.
The following are all part of the female reproductive organs EXCEPT ________
A) prostate gland B) ovaries C) uterus D) uterine horns
The lateral superficial vein of the arm and forearm is the ___ vein.
a) median cubital b) radial c) basilic d) cephalic
Sperm are moved along the ductus deferens by
A) hydrostatic force. B) ciliary action. C) peristaltic contractions. D) suction. E) hydraulic action.