Quiz-respiratory pt 2

Question 1

The diaphragm assists breathing by

Answer 1

Changing the volume of the thoracic cavity

Question 2

Inhalation is caused by

Answer 2

the diaphragm moving down and the ribs moving out.

Question 3

Air pressure is reduced inside the thoracic cavity when

Answer 3

the rib cage moves up and out

Question 4

The pleural membranes begin to expand and stretch when

Answer 4

both the diaphragm and rib muscles contract.

Question 5

Which of the following is caused by the contraction of the diaphragm?

Answer 5

Increase in volume of the chest cavity.

Question 6

Which of the following occurs during expiration?

Answer 6

Diaphragm relaxes and rib cage moves down

Question 7

As the blood becomes more acidic in muscle tissues, hemoglobin will carry less

Answer 7

oxygen

Question 8

The level of CO2 in the blood is monitored by the

Answer 8

medulla oblongata.

Question 9

Increased concentrations of which gas are sensed by the brain and result in increased rate and depth of breathing?

Answer 9

Carbon dioxide.

Question 10

Which of the following would cause a decrease in the pH of the blood during internal respiration?

Answer 10

running for ten minutes

Question 11

Internal respiration is defined as

Answer 11

exchange of gases between blood and tissues.