Respiratory System Flashcards
1
Q
Name the 5 structures of the respiratory system
A
- airway
- lungs
- chest (thorax)
- diaphragm (sheet of muscle)
- pleura membrane
2
Q
Name the fluid of the pleura membrane
A
Intra-pleural fluid
3
Q
Darcy’s Law
A
DELTA P = Q.R
Q - flow rate
R - resistance
4
Q
Inspiration (Intercostal muscle and diaphragm)
A
IM contract (rib cage goes up) Diaphragm goes down
5
Q
Expiration (Intercostal muscle and diaphragm)
A
IM contract (rib cage goes down) Diaphragm goes up
6
Q
P_ATM < P_LUNG
A
gas goes out of the lung
7
Q
Total lung capacity
A
Residual volume + Vital capacity
8
Q
Minute ventilation (ML/min)
A
tidal volume (ML/breath) x respiratory rate (breaths/min)
9
Q
Blood vessel’s resistance is low
A
- Viscosity is low
- Pipes are short
- Big diameter
10
Q
Compliance
A
Measure of how stretchy something is
11
Q
The blood that comes from the tissues is ….. in O2 and ….. in CO2
A
low/high
12
Q
Respiratory Quocient (RQ)
A
(CO2 out/min)/ (O2 in/min)
Average: 0.8
13
Q
O2 and CO2 in inspired air:
A
PO2 = 152 mm Hg PCO2 = 0.3 mm Hg
14
Q
O2 and CO2 in alveolar gas pressures:
A
PO2 = 105 mm Hg PCO2 = 40 mm Hg
15
Q
O2 and CO2 in pulmonary veins and systemic arteries:
A
PO2 = 105 mm Hg PCO2 = 40 mm Hg
