During quiet breathing, the diaphragm and external intercostals muscles contract. What effect does this have on the thoracic cavity?
a. it increase the pressure and decreases the volume of the thoracic cavity
b. it increases the volume and decreases the pressure of the thoracic cavity
c. it increases the volume and increases the pressure of the thoracic cavity
d. it decreases the volume and decreases the pressure of the thoracic cavity
Answer: b. it increases the volume and decreases the pressure of the thoracic cavity
You might also like to view...
Microglia are (the)
A) not a neuroglial cell. B) most numerous neuroglial cell. C) least numerous neuroglial cell. D) smallest neuroglial cell. E) None of the answers are correct.
A neuroblastoma is a/an ________________ neoplasm of nervous tissue origin
Fill in the blank(s) with correct word
"Cutaneous membrane" refers to
A) mucus. B) cartilage. C) bones. D) skin.
When a muscle cell is at rest, there is a charge separation (voltage) across the plasma membrane called ________
A) the battery B) depolarization C) the resting membrane potential D) repolarization