Respiratory A&P

Question 1

Dorsal Respiratory Group

Answer 1

Stimulates inhalation. Controls the basic rhythm

Question 2

Ventral Respiratory Group

Answer 2

Inhalation and exhalation; primarily active in exercise and stress

Question 3

Central Chemosensors

Answer 3

Monitors H+ ions in the CSF, which indirectly monitors CO2

Question 4

Pontine Respiratory Group

Answer 4

Smooths the breathing; turns off inspiratory group

Question 5

Apneustic Center

Answer 5

works with DGR and PRG to prolong inhalation and prohibit exhalation

Question 6

Hering-Breuer Reflex

Answer 6

Prevents the overfilling of the lungs

Question 7

Describe the function of the upper airway.

Answer 7

Warms, moistens, and filters air; involves coughing, swallowing and speech

Question 8

Tidal Volume

Answer 8

The volume air inhaled/exhaled during a single respiratory cycle. Approx. 500cc (5-7 cc/kg)

Question 9

Anatomic Dead Space

Answer 9

The amount of air that isn’t exhaled and does not go through gas exchange

Question 10

Alveolar Air Volume

Answer 10

The amount of air that does go through gas exchange

Question 11

Minute Volume

Answer 11

The amount of air moved in and out of the respiratory

Question 12

Describe a shunt

Answer 12

Adequate blood flow to the alveoli, but some alveoli are not being perfused. Bad air/Good blood

Question 13

Describe Physiological Dead Space

Answer 13

The alveoli are being perfused, but there is no blood for gas exchange. Good air/Bad blood. aka- Wasted ventilation

Question 14

Normal PaO2

Answer 14

80-100mmHg

Question 15

Normal PaCO2

Answer 15

35-45 mmHg