Course

Human Biology

Study Pack

Set 10 The Respiratory System Exchange Of Gases

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Question 1

(Multiple Choice)

Free
Which one of the following muscles separates the thoracic cavity from the abdominal cavity?

A) intercostal
B) intracostal
C) cardiac
D) diaphragm
E) spleen

Answer

Question 2

(Multiple Choice)

Free
A small amount of fluid is contained in the pleural cavity to

A) promote the exchange of nutrients with both lungs.
B) allow gas exchange between the lungs and the blood stream.
C) allow white blood cells and macrophages access to foreign antigens entering the body through air.
D) function as a lubricant as the lungs move during ventilation.
E) serve as a shock absorber for the lungs during body movement.

Answer

Question 3

(Multiple Choice)

Free
Which one of the following best explains why humans must constantly breathe in oxygen in order to stay alive?

A) Oxygen is an important source of energy for cells and is used to make glucose.
B) Oxygen is essential for the production of most of the ATPs required to fuel cell functions.
C) Oxygen must be available to cells in order for them to make the sugars necessary to supply energy for cell functions.
D) Oxygen is used to drive the anaerobic breakdown of sugars for the production of ATP.
E) Oxygen is converted to carbon dioxide, which is then used to drive the production of ADP.

Answer