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Flashcards in Oxygenation Deck (74)
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1

three steps in the process of oxygenation

ventilation, perfusion, and diffusion

2

the process of moving gases into and out of the lungs

ventilation

3

major inspiratory muscle of respiration

diaphragm

4

relates to the ability of the cardiovascular system to pump oxygenated blood to the tissues and return deoxygenated blood to the lungs

perfusion

5

responsible for moving the respiratory gases from one area to another by concentration gradients

diffusion

6

effort required to expand and contract the lungs

work of breathing (WOB)

7

ease at which the lungs can be expanded

compliance

8

an active process stimulated by chemical receptors in the aorta

inspiration

9

a passive process that depends on the elastic recoil properties of the lungs, requiring little or no muscle work

expiration

10

a chemical produced in the lungs to maintain the surface tension of the alveoli and keep them from collapsing

surfactant

11

collapse of the alveoli that prevents normal exchange of oxygen and carbon dioxide

atelectasis

12

the amount of air exhaled after normal inspiration

tidal volume

13

the amount of air left in the alveoli after a full expiration

residual volume

14

maximum amount of air that can be removed from the lungs during forced expiration

forced vital capacity

15

what three things influence the capacity of the blood to carry oxygen?

the amount of dissolved oxygen in plasma, the amount of hemoglobin, and the tendency of hemoglobin to bind with oxygen

16

CNS controls the RR, depth, and rhythm, cerebral cortex regulates the voluntary control of respiration

neural regulation

17

maintains the rate and depth of respirations based on changes in blood concentrations of CO2 and O2, and in hydrogen ion concentration (ph), chemoreceptors sense changes in the chemical content and stimulate neural regulators to adjust

chemical regulation

18

volume of blood ejected from the ventricles during systole

stroke volume

19

Frank-Starling law of the heart

as the myocardium stretches, the strength of the subsequent contraction increases

20

pulmonary circulation

right side

21

systemic circulation

left side

22

atrioventricular valves

tricuspid and mitral

23

semilunar valves

aortic and pulmonic

24

the amount of blood ejected from the left ventricle each minute

cardiac output

25

the amount of blood in the left ventricle at the end of diastole

preload

26

the resistance to left ventricular ejection

afterload

27

the pacemaker of the heart

SA node

28

reflects the electrical activity of the conduction system

electrocardiogram (ECG)

29

represents the electrical conduction through both atria

p wave

30

indicates that the electrical impulse traveled through the ventricles

QRS complex