Inhaling through the nostrils is preferred over the mouth because
A) there is less resistance to flow.
B) it combines olfaction with respiration.
C) it allows better conditioning of the inhaled air.
D) bacteria won't be inhaled from the oral cavity.
E) it dries out the mouth.
Answer: C
You might also like to view...
Which of the following is the characteristic treatment for respiratory acidosis?
A) improve ventilation B) administer bicarbonate C) reduce respiratory rate, allow rise in PCO2 D) reduce respiratory rate, allow decrease in PCO2 E) administer ammonium chloride
What type of cell signaling occurs through the extracellular matrix to nearby target cells?
A. Endocrine signaling B. Paracrine signaling C. Gap junctions D. Synaptic signaling
Vagal influences on the heart result in
a. enhanced calcium permeability at the SA node b. enhanced potassium permeability at the SA node c. less frequent depolarization of the SA node d. both a and b e. both b and c
Which ramus carries sensory information from the limbs?
A) anterior ramus B) posterior ramus C) medial ramus D) lateral ramus E) rami communicantes