Which of the following is a paired structure?
a. cerebral (mesencephalic) aqueduct
b. median aperture
c. central canal of spinal cord
d. lateral aperture
Answer: d. lateral aperture
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Which of the following is not true of phospholipids?
a. The molecule contains three fatty acids. b. The molecule has a water-attracting part. c. The molecule has a water-repelling part. d. It is important in the structure of the cell membrane.
________ is the act of implanting a wire ring through a pig's nose to discourage rooting
Fill in the blank(s) with correct word
The peritoneal cavity contains which of the following?
(A) liver (B) pancreas (C) large intestine (D) kidney (E) peritoneal fluid
Skeletal muscle is called ________, because it is usually subject to conscious control.
A. contractile B. striated C. excitable D. isometric E. voluntary