Gas exchange through the body 16.4

Question 1

What is the PCO2 alveolar pressure?

Answer 1

40mmHg

Question 2

What % of oxygen is contained in the blood plasma?

Answer 2

1.5%

Question 3

What % of oxygen is contained in the RBC?

Answer 3

98.5%

Question 4

What are the three factors that influence the release of oxygen?

Answer 4

CO2
Acidity
Temperature

Question 5

How is CO2 transported in the blood?

Answer 5

7% in plasma
23% is bound to amino acid
70% is bound to bicarbonate

Question 6

What is the area from which nerve impulses are sent to the respiratory muscles to control respiratory rate. Located in the Pons and Medulla Oblongata

Answer 6

Respiratory center

Question 7

What is the medullary respiratory center?

Answer 7

Controls the basic rhythm of respiration

Question 8

What generates nerve impulses for forceful exhalation and remains active during quiet breathing?

Answer 8

Dorsal Respiratory Group

Question 9

What supplies nerve impulses of forceful exhalation and remain inactive during quiet breathing?

Answer 9

Ventral Respiratory Group

Question 10

What respiratory group is active during both inhalation and exhalation?

Answer 10

The Pontine Respiratory Group

Question 11

If there is a buildup of CO2 and H+, what effects will happen to the respiratory system?

Answer 11

It becomes stimulated and breathing resumes.

Question 12

What is located in the medulla, responds to changes in H+ and PCO2 levels in the cerebrospinal fluid in the CSF?

Answer 12

Central Chemoreceptors

Question 13

What is located in the aortic arch common carotids are sensitive to levels to PO2, H+ and PCO2 in the blood?

Answer 13

Peripheral Chemoreceptors

Question 14

What is the purpose of hyperventilation?

Answer 14

to exhale CO2 and H+ levels

Question 15

Aging reduces vital capacity by what %?

Answer 15

35%