Ventilation profusion coupling

Question 1

What is ventilation-perfusion coupling?

Answer 1

The relationship between ventilation and perfusion

Question 2

Ventilation rate (V) is the total

Answer 2

total gas volume that enters and leaves the alveoli in a given amount of time (per minute)

Question 3

Perfusion rate (Q) is the total

Answer 3

blood volume that enters the alveolar capillaries per minute during the gas exchange

Question 4

On average, how many liters of oxygen and blood enter the alveoli in a minute?

Answer 4

4 liters of oxygen (V) and 5 liters of blood
(Q) enter the alveoli in a minute

Question 5

When thoracic cavity pressure decreases, pressure____= lungs___ and air is forced out

Answer 5

pressure decreases, pressure increases
lungs contract

Question 6

Increased size of thoracic cavity and decreases pressure inside =

Answer 6

air rushes in and fills the lungs

Question 7

In pulmonary ventilation, air flows between the
the atmosphere and the alveoli of the lungs because of

Answer 7

alternating pressure differences created by contraction and relaxation of respiratory muscles

Inhalation and exhalation

Question 8

What are the muscles of the inhalation and exhalation?

Answer 8

• External intercostals
  -Internal intercostals
  -External abdominal oblique
  -Internal abdominal oblique
  -Transversus abdominis
  -Rectus abdominis

Question 9

Eupnea –

Answer 9

normal, relaxed breathing

Question 10

Apnea –

Answer 10

slowed/stopping

Question 11

Dyspnea –

Answer 11

difficulty/labored breathing

Question 12

Tachypnea –

Answer 12

abnormally rapid breathing

Question 13

Costal breathing

Answer 13

contraction of intercostal muscles, resulting in shallow breathing

Question 14

Diaphragmatic breathing

Answer 14

abdominal/belly breathing