Chapter 6 - the heart and lungs at work Flashcards Preview

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Flashcards in Chapter 6 - the heart and lungs at work Deck (78)
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1

what is considered the most popular cardiovascular exercise?

Running

2

what are the 4 primary roles of the cardiovascular system?

1) to transport oxygen from the lungs to the heart
2) to transport carbon dioxide from the tissues to the lungs
3) to transport nutrients from the digestive system to other areas in the body
4) to transport products from sites of production to sites of exercise

3

what are the 2 components to measure blood pressure?

1) Diastole
2) Systole

4

Diastole

used to decribe the pressure in the heart when the ventricles are relaxed and are being filled with blood. indicator of peripheral blood pressure (the blood pressure in the body outside the heart)

5

Systole

the pressure in the ventricles when they are contracting and pushing blood out into the body

6

what is the normal range of pressure in the atria during diastole?

80mmHg

7

what is the normal range of pressure in the atria during systole?

120mmHg

8

what is the rest point called

diastole

9

the further from the heart, the lower the pressure. is this true or false?

true

10

what 2 items does a doctor use to take a patient's blood pressure?

sphygmomanometer and stethoscope

11

hypertensive

blood pressure is too high - increases pressure going into the brain

12

problems with low blood pressure below 100 systolic

not enough blood going to brain

13

stroke volume

the amount of blood pumped out of the left ventricle each time the heart beats

14

what is stroke volume measured in?

milliliters

15

what is a typical stroke volume for a normal heart?

about 70 milliliters of blood per beat

16

what are the 2 ways to take heart rate?

with fingers on the wrist (radial) and with fingers on the neck (carotid)

17

heart rate

the number of times the heart beats in one minute, measured in beats per minute (bpm)

18

what are the contraction of the walls of the heart commonly known as?

the heart beat

19

what range can the resting heart rate of an adult be from?

40bpm in a highly trained athlete to 70bpm in a normal person

20

during intense exercise, the heart rate may increase up to ____ bpm

200bpm

21

what is the maximum heart rate?

220bpm

22

vessels that carry blood away from the heart are called ____

arteries

23

arteries branch into smaller and smaller vessels called _______

arterioles

24

the arterioles branch into even smaller vessels called ______

capillaries

25

peripheral nervous system

between heart and lungs

26

capillaries

allow for the exchange of oxygen and nutrients from the blood to the muscles and organs and allow blood to pick up the waste products and carbon dioxide from metabolism

27

as the blood begins to return to the heart, the capillaries connect to from larger and larger vessels called ______

venules

28

the venules then merge into larger vessels that return blood to the heart called ____

veins

29

the skeletal muscle pump

blood that flows towards the heart opens the valves and blood that flows away from the heart closes the valves

30

vericose veins

the valves failed (blood pools back down)