Unit 5 - A & P Assignment - Respiratory System

Question 1

Aspects of gas transport and exchange

Answer 1

Question 2

Identify respiratory system structures

Answer 2

Question 3

Respiratory epithelium function

Answer 3

Question 4

Key events of gas exchange

Answer 4

Question 5

The path that air follows to reach the lungs

Answer 5

Question 6

The mechanisms involved in the transport of carbon dioxide in the blood

Answer 6

Question 7

Definition of the Oxygen-Hemoglobin Dissociation Curve

What best describes the shape of the oxygen-hemoglobin dissociation curve?

Answer 7

A graphical representation of the relationship between hemoglobin’s percent saturation and the partial pressure of oxygen

Question 8

Shape of the Curve


Which of the following describes the shape of the oxygen-hemoglobin dissociation curve?

Answer 8

Sigmoidal

Question 9

Significance of Curve Shape


What is the significance of the shape of the oxygen-hemoglobin dissociation curve?

Answer 9

Only significant changes in the partial pressure of oxygen will result in significant changes to hemoglobin saturation.

Question 10

Labeling the Oxygen-Hemoglobin Dissociation Curve

Answer 10

Question 11

Reading the Oxygen-Hemoglobin Dissociation Curve

Using the oxygen dissociation curve, determine the percent saturation of hemoglobin at a partial pressure of 50 mmHg?

Answer 11

85%

Question 12

Shifting the Oxygen-Hemoglobin Dissociation Curve and the Effect It Has on Affinity

How does a rightward shift in the oxygen hemoglobin dissociation curve affect hemoglobin’s affinity to oxygen?

Answer 12

Decrease

Question 13

Describing Affinity

Which of the following best describes the affinity between oxygen and hemoglobin?

Answer 13

The higher the affinity, the more likely it is that oxygen bind to hemoglobin.

Question 14

Answer 14

Fetal hemoglobin has an increased affinity to oxygen, which means that it is more saturated than maternal hemoglobin at any given partial pressure of oxygen.

Question 15

Type of shift in the oxygen-hemoglobin dissociation curve

Answer 15

Question 16

Applying Real-Life Examples to Shifts in the Curve

Answer 16

Question 17

You have decided to ascend to the summit of Mount Everest, where the partial pressure of oxygen in the atmosphere has been estimated to be about 54 mmHg. Recall that when this air arrives in the alveoli, the partial pressure of oxygen drops even lower because of displacement by the partial pressure of carbon dioxide and water vapor. The arterial concentration of oxygen at the pulmonary capillaries is measured and found to be 25 mmHg.

What is the percent saturation of hemoglobin at this partial pressure?

Answer 17

45%

Question 18

The sum of tidal volume, inspiratory reserve volume, and expiratory reserve volume is called his ______.

Answer 18

Vital capacity

Question 19

Which lung volume have we NOT been able to measure yet?

Answer 19

Residual volume

Question 20

Follow carbon dioxide on its path out of the body

Answer 20

Question 21

Follow oxygen on its path from the lungs to the body tissues

Answer 21