Quiz 2 Flashcards
1
Q
Internal Respiration
A
- Intracellular o2 metabolism
- Cellular transformation
- Krebs cycle (Aerobic ATP generation)
- Mitochondria and o2 utilization
2
Q
External Respiration
A
- Mechanics of breathing
- Movement of gases
- Gas exchange
- Maintain homeostasis
3
Q
Most important muscle of inspiration?
A
Diaphram
4
Q
During contraction of diaphram
A
- Abdominal cavity forced downward and forward (increasing vertical dimension of chest cavity)
- Rib margins are lifted and moved outward (increasing diameter of thorax)
5
Q
situations of increased intra-abdominal pressure (9) (causes decrease in FRC)
A
- pregnancy
- obesity
- bowel obstruction
- laparascopic surgery
- ascites
- abdominal mass
- hepatomegaly
- trendelenburg position
- valsalva maneuver
6
Q
Two parts of Pleural membrane
A
- Visceral
- Parietal
7
Q
FRC is what and what combined?
A
- Expiratory reserve volume
- Residual Volume
8
Q
Lung Volume changes related to Transpulmonary pressure
A
- inspiration and expiration compliance and mechanics differ
- Curves vary because of forces on lung differ during breathing cycle
9
Q
pressure differences on inspriation, expiration, and fluid vs air
A
- Lower pressure on exhalation
- Higher pressure on inhalation
- Lowest pressure is in fluid
10
Q
the product in surfactant and what it does
A
- DPPC- dipalmitoyl phosphatidyl choline
- hyrdophobic/philic
- aligns intermolecular repulsing forces
- surface tension more reduced when film compressed closer as DPPC repels each other more
11
Q
Physiological dead space
A
Deviation for ideal ventilation relative to blood flow
