During inspiration, contraction of the diaphragm causes the volume of Mr. Jones' thoracic cavity to increase and the pleural pressure to decrease. The pressure in his alveoli (Palv) will
A. decrease below atmospheric pressure (PB), causing air to move out of his lungs.
B. become greater than atmospheric pressure (PB), causing air to move into his lungs.
C. decrease below atmospheric pressure (PB), causing air to move into his lungs.
D. become greater than atmospheric pressure (PB), causing air to move out of his lungs.
E. does not change.
C
You might also like to view...
There are hormones in all of the following classes of organic compounds except
a. glycoproteins. b. polypeptides. c. polysaccharides. d. steroids. e. biogenic amines.
ADH is produced in the _______.
A) hypothalamus. B) posterior pituitary. C) anterior pituitary. D) adrenal cortex.
The level of ketone bodies in the blood increases when high levels of ________ are being metabolized.
A) glucose B) proteins C) carbohydrates D) fatty acids E) amino acids
The basal nuclei include the
A. pons. B. midbrain. C. corpus callosum. D. putamen.