Of the following list, which describe the functions of the paranasal sinuses?
a: Warm and moisten inhaled air
b: Strengthen the bone
c: Provide resonance to the voice
A. a, b, and c
B. None of the listed functions describe those of the sinuses.
C. a only
D. b only
E. a and c
E
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Over 90 percent of nervous system pathways decussate. What does "decussate" mean?
A. Branch extensively B. Carry information to and from the same effector C. Switch from carrying motor information to carrying sensory information D. Cross from one side of the body to the other E. None of the choices is correct.
Before the mRNA transcribed from a gene can be used to translate into a protein, it must be
A) edited to remove introns. B) edited to remove exons. C) transported into the cytoplasm. D) edited to remove introns and transported into the cytoplasm. E) coated with phospholipids for transport out of the nucleus.
Which of the following vessels does NOT drain into the axillary vein?
A) subscapular vein B) internal thoracic vein C) ventral thoracic vein D) long thoracic vein
Microvilli
A. are supported by microtubules. B. move the cell. C. increase the surface area of the cell. D. function to make the cell mobile. E. are extensions of the lysosomal membrane.