Chapter 2: Cardiorespiratory System and Gas Exchange Flashcards Preview

NSCA-CPT Part 1 (Exercise Science) > Chapter 2: Cardiorespiratory System and Gas Exchange > Flashcards

Flashcards in Chapter 2: Cardiorespiratory System and Gas Exchange Deck (33):
1

volume of oxygen a gram of hemoglobin can carry

1.39 ml

2

average amount of hemoglobin in the blood of a healthy individual

15 g

3

90% of hemoglobin is bound to oxygen at this partial pressure of oxygen

60 mmHg

4

binding of one molecule of oxygen leads to a greater affinity for oxygen in hemoglobin

cooperative binding

5

These shift the oxygen hemoglobin dissociation curve to the right, resulting in an increase of the release of oxygen to myoglobin

increased temp
decreased pH

6

time from SA node impulse to contraction of the ventricles

0.2 seconds

7

valve that separates the right side of the heart

tricuspid valve

8

valve that separates the left side of the heart

mitral/bicuspid valve

9

the resistance of the entire systemic circulation is called

total peripheral resistance

10

the stimulation of this NS causes constriction or dilation of vessels

sympathetic NS

11

pressure exerted against the aterials walls as blood is forcefully ejected during ventricular contraction

Systolic BP

12

Work of the heart is reffered to as this

rate-pressure product RPP
or double product

13

RPP =

SBP x HR

14

pressure exerted against the aterial walls when no blood is being forcefully ejected through the vessels

DBP

15

MAP

mean arterial blood pressure

16

T/F: MAP is the average SBP and DBP

F, DBP is a larger contributing factor

17

Amount of blood pumped by the heart in one minute

cardiac output

18

Cardiac output (Q) =

Stroke volume x HR

19

amount of blood ejected per beat

Stroke volume

20

SV =

EDV -ESV

21

the more the left ventricle is stretched, the more forceful the contraction and thus the greater volume of blood leaving the ventricle

frank-starling principle

22

EDV is influenced by 2

heart volume
venous return of blood to the heart

23

# of generations in the lungs (count after the split of the trachea into left and right bronchi)

23

24

method of examining static lung volumes

spirometry

25

normal breathing

tidal volume

26

vital capacity=

total lung capacity - residual volume

27

movement of gas (oxygen/CO2) across a cell membrane

diffusion

28

the amount of oxygen used by the tissues of the body

oxygen comsumption or oxygen uptake (Vo2)

29

Traditionally the term oxygen consumption is used in this situation

oxygen used by the tissue is directly measured

30

The name for the formula which represents Vo2

fick equation

31

Vo2 =

Cardiac Output (Q) x arterial-venous oxygen difference(a-vO2)

32

the highest amount of oxygen that can be used at the cellular level for the entire body

Vo2max

33

relative Vo2 at rest is typically

3.5 ml/kg/min