Course

Introductory Biology

Study Pack

Set 35 Respiratory Systems

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Question 1

(Multiple Choice)

Free
Which statement is NOT true about the human respiratory system?

A)The glottis is closed by the forward movement of the soft palate during swallowing.
B)The glottis is the passageway through the larynx by which air enters the trachea.
C)Food and air both enter the pharynx,presenting a potential danger to respiration.
D)Air reaching the lungs has been warmed to body temperature by passage through the nose and upper respiratory passageways.
E)Cilia and hairs in the nose help to filter out foreign materials in the air.

Answer

Question 2

(Multiple Choice)

Free
In small aquatic animals,such as hydra and planarians,the most common structure used for gas exchange is the

A)lungs.
B)body surface.
C)gills.
D)cardiovascular system.

Answer

Question 3

(Multiple Choice)

Free
If an individual wanted to hold their breath underwater for a long period of time they would breath very rapidly prior to the dive.What does this accomplish?

A)They would decrease the amount of CO2 in their bloodstream which would cause them to temporarily stop breathing.
B)They would increase the amount of H+ in their bloodstream which would cause them to temporarily stop breathing.
C)They would decrease the amount of H+ in their bloodstream which would cause them to temporarily stop breathing.
D)They would increase the amount of CO2 in their bloodstream which would cause them to temporarily stop breathing.

Answer