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Flashcards in Chapter 6 Deck (29)
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1

THe primary function of the cardiovascular system during aerobic exercise is to ?

delever oxygen and nutritents to the muscle

2

cardiac output

the amount of blood pumped by the heart in leters per minute

3

cardiac output is determined by?

the quantity of blood ejected with each beat (stroke volume) and the hearts rate of pumping (heart rate)

4

stroke volume

blood ejected with each beat
Volume=how much

5

Cardiac output formula

stroke volume x heart rate
Q+SV x xHR

6

college men maximal stroke volume

100 and 115 ml of blood

7

what is responsible for the regulation of stroke volume?

end-diastolic volume and the action of catecholamines (epinephrine and norepinephrine

8

end-diastolic volume

the volume of blood available to be pumped by the left ventricle at the end of the filling phase (diastole

9

venous return

the amount of blood returning to the hear

10

frank-starling mechanism

with aerobic exercise more blood returns to the heart diastolic volume is increased, myocardial fibers become more stretched , more forceful contraction of systolic ejection

11

how to calculate maximal HR

220-age plus or minus 10

12

how to calculate VO2 max?

cardiac output x arteriovenous oxygen difference

13

systolic blood pressure

the pressure exerted against the arterial walls as blood is forcefully ejected during ventricular contraction (systole)

14

diastolic blood pressure

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

15

total peripheral resistance

the resistance of the entire systemic circulation

16

acute aerobic exercies results in an increase of?

cardiac output
stroke volume
HR
oxygen uptake
systolic blood pressure
blood flow to active muscles

17

acute aerobic exercise results in a decrease of?

diastolic blood pressure (decrease=diastolic)

18

minute ventilation

the volume of air breathed per minute (increases with exercise)

19

tidal volume

the amount of air inhaled and exhaled with each breath

20

aerobic endurance training adaptations of muscular strength and sprint speed, anaerobic power, and maximal rate of force production

no charge

21

aerobic endurance training adaptations for muscular endurance and aerobic power

increase

22

aerobic endurance training adaptations for fiber size, myofibrillar activity, cytoplasmic density and myosin heavy chain protein

no change

23

aerobic endurance training adaptations for capillary density and mitochondrial density

increases

24

aerobic endurance training adaptations for creatine phosphokinase, myokinase and sodium potassium atpase

increase

25

aerobic endurance training adaptation for stored ATP, stored creatine phosphate, stored glycogen, stored triglycerides

increases

26

aerobic endurance training adaptations for ligament strength and tendon strength

increases

27

aerobic endurance training adaptations for % body fat

decreases

28

aerobic endurance training adaptationsfor fat-free mass

no change

29

biggesst change is chronic cardiovasular funtion of aerobic endurance training

increase in maximal cardiac output