Chapter 3 - Inhalation and Exhalation

Question 1

What intercostal muscles does inhalation use?

Answer 1

external intercostal muscles

Question 2

What happens during inhalation?

Answer 2

Air goes in, there is an increase in volume, negative pressure develops, the diaphram moves down and the rib cage moves out and up

Question 3

What causes inhalation?

Answer 3

External intercostal muscles contract moving the rib cage up and out as well as the diaphram contracts moving down

Question 4

What happens during normal exhalation?

Answer 4

Air goes out, there is a decrease in volume, positive pressure develops, the diaphram moves up and the rib cage goes down and in

Question 5

What causes normal exhalation?

Answer 5

external intercostal muscles just relax the rib cage moves down and in as well as the diaphram just relaxes moving up

Question 6

What happens during forced exhalation?

Answer 6

Air goes out, there is a decrease in volume, positive pressure develops, the diaphram moves up and the rib cage goes down and in

Question 7

What causes forced exhalation?

Answer 7

Internal intercostal muscles contract bring the rib cage down and in. the abdominal muscles also contract forcing the diaphram down.