Respiratory Physiology

The ventral and dorsal respiratory centers are found in the _____ of the brain.

• brain stem

• temporal lobe

• hypothalamus

• medulla

The _______ respiratory center fine-tunes breathing, ensuring a smooth transition from expiration to inspiration.

• ventral

• dorsal

• pontine

• peripheral

Central chemoreceptors monitor _______ concentration in the CSF.

• CO2

• H+

• O2

• CO2 and H+

Tags

NGSS.HS-LS1-3

________ chemoreceptors are the most accurate measure of blood PCO2

• peripheral

• central

Peripheral chemoreceptors monitor changes in ......

• CO2

• H+

• O2

• H2CO3

Tags

NGSS.HS-LS1-3

Muscles of quiet inspiration

• diaphragm

• internal intercostals

• external intercostals

• sternocleidomastoid

Henry's Law says that the solubility of a gas in liquid depends on the partial pressure of the gas in the air and the solubility coefficient of the gas in the liquid at a given temperature and pressure.

• true

• false

During quiet INSPIRATION, intrapleural pressure goes from 761 mmHg to 760 mmHg.

• true

• false

In the lungs, the PO2 of the blood goes from ____ mmHg to ____ mmHg as the O2 diffuses from the alveoli into the blood.

• 45, 40

• 40,45

• 104, 40

• 40, 104

PO2 in the alveoli during inspiration.....

• fluctuates

• decreases

• remains constant

• increases