Intro To Respiratory System Flashcards
1
Q
Functions of respiratory system
A
Gas exchange, acid base balance, protection from infection, communication via speech
2
Q
Arteries
A
Travel away from heart. Most contain oxygenated blood except the pulmonary artery
3
Q
Gas exchanges in external respiration
A
- Between atmosphere and lung
- Between lung and blood
- Between blood and cells
4
Q
Net volume of gas exchanged in the lung per unit time
A
250ml/min O2, 200ml/min CO2 is equal to net volume exchanged in tissues
5
Q
Is larynx upper or lower respiratory tract
A
Usually upper
6
Q
Common place for aspirated foreign bodies to lodge
A
Right lung as bronchi is more vertical
7
Q
Type 1 alveoli cells
A
Pnuemocytes for gas exchange, flat and thin
8
Q
Type 2 alveoli cells
A
Synthesise surfactant
9
Q
Surface area of alveoli
A
80m2 for lots of gas exchange
10
Q
Functions of mucous
A
Moistens air, traps particles, provides large SA for cilia
