Chapters 38, 40 and 41: Pulmonary Ventilation and Gas Transport 1 partial pressu
ID: 269395 • Letter: C
Question
Chapters 38, 40 and 41: Pulmonary Ventilation and Gas Transport 1 partial pressure 2 Surfactant 3 Lung Compliance 4 Bohr effect 5 high oxygen concentration 6 Diaphragm 7 alveoli 8 oxygen diffusion 9 External Intercostals Phospholipid secretion that reduces surface tension in alveoli B A occurs from high concentration to low concentration C Muscle that raises the rib cage to increase chest cavity volume D pressure an individual gas exerts on the cell membrane E Volume of air moved in and out of lungs during quiet breathing F airsacs in lungs with respiratory membrane 6 CO2 in blood enhances release of 02 from hemoglobin H increases affinity of hemoglobin for carbon dioxide I Muscle that contracts to increase chest cavity volume A 10 tidal volume Directly dependent on elasticity and surface tension 11 vital capacity K with residual volume makes up total lung capacity 12 residual volume Volume of air remaining in lungs after forceful expirationExplanation / Answer
1- D
2-A
3-J
4-G
5-H
6-I
7-F
8-B
9-C
10-E
11- K
12-L
Diaphragm is the main muscle of respiration. When it is contracted, the volume of thorax increases so that the lungs expand and air rushed into the lungs. The intercostal muscles lift the rib cage up to increase the thoracic volume. The alveoli are lined by a thin layer of mucous substance which prevents the alveoli from collapsing. Partial pressure is the pressure exerted by an individual has in a mixture of gas. Alveoli are the functional units of lungs.