The Lungs Flashcards
(10 cards)
1
Q
What are the name of the structures where gas exchange takes place?
A
Alveoli
2
Q
Name of the muscles in between the ribs
A
Intercostal membrane
3
Q
Name of the membrane surrounding the lungs
A
Pleural membrane
4
Q
Name of the tubes that carry oxygen into the lungs
A
Trachea and Bronchus
5
Q
What happens when the diaphragm :
1. Relaxes
2. Contracts
A
- Shrinks back to compress lungs meaning pressure in the lungs is greater than outside forcing air out during exhale (expiration)
- Contracts downwards increasing Volume of lungs meaning the pressure outside is greater than the pressure in the lungs forcing air in during inhale
(inspiration)
6
Q
Expiration is caused by?
A
Internal Intercostal muscles contracting
7
Q
Inspiration is caused by?
A
External Intercostal muscles contracting
8
Q
What is Tidal volume?
A
The volume of air normally taken at each breath when at rest
9
Q
Ventilation rate is?
A
Number of breaths per minute
10
Q
the equation for Pulmonary ventilation is ?
A
Tidal volume x Ventilation rate
