cardiovasular system

Question 1

3 function of cardiovascular system

Answer 1

thermoregulation
immunity
transports gases and fuels

Question 2

what is the cv system made up of

Answer 2

heart
blood vessels
blood

Question 3

stage 1 of cardiac cycle ( 3 steps)

Answer 3

the atrias fill with blood
blood returns through vena cava into the right atrium
blood returns from lungs into the left atrium thorough pulmonary vein

Question 4

heart rate

Answer 4

number of contractions of the heart muscle in a minute
220-age= MHR

Question 5

stage 2 ( two steps)

Answer 5

pressure builds in atria making bicuppid and tricuppid valves open
the blood goes into ventricles

Question 6

stage 3 ( 4 steps)

Answer 6

ventricles contract
blood moves into aorta to the rest of the body
or into the pulmonary artery and into lungs

Question 7

Stroke volume

Answer 7

amount of blood ejected from the left ventricle of the heart each contraction
measured as L/min
when u reach 60% is plateus

Question 8

cardiac output (q)

Answer 8

total amount of blood ejected by left ventricle of the heart each minute
HRXSV

Question 9

3 functions of the blood

Answer 9

• transports gases and fuels
  -thermoregulation
• protect against dehydration

Question 10

2 functions red blood cells

Answer 10

transports oxygen to muscles\
transports carbon dioxide away from muscles

Question 11

white blood cells

Answer 11

fights infections and virus by absorbing

Question 12

platelets

Answer 12

clots the blood ( my eye)

Question 13

plasma

Answer 13

transports nutrients proteins and hormones

Question 14

artery 3 functions

Answer 14

transport oxygen rich blood
connects to capillaries
exchanges gases and nutrients

Question 15

capillary 3 functions

Answer 15

diffusion
precapillary sphincters ( hairties)
highways, like a valve when exercising open to skin close to organs

Question 16

veins

Answer 16

low in oxygen

Question 17

vasodilation

Answer 17

opening of arteries- skin and muscle in exercise

Question 18

vasoconstriction

Answer 18

closing of arteries- major organs in exercise

Question 19

blood pressure

Answer 19

pressure exerted by the blood in the arteries when the heart releases

Question 20

2 types of blood pressure and what are they

Answer 20

diastolic- when the heart relaxes and fills with blood
systolic- blood pumped by hear ( thuds)

Question 21

thermoregulation

Answer 21

balanced body temp

Question 22

heat exhaustion

Answer 22

bloodflow to skin increases and to working muscle decreases

Question 23

dehydration

Answer 23

blood plasma is reduced making blood thicker, by sweating to remove heat you loose plasma

Question 24

2 hyperthermia causes

Answer 24

heat cramp, dizziness, loss of p[lasma

Question 25

heat exhaustion

Answer 25

serious cramps, more fluid lost from sweating

Question 26

heat stroke

Answer 26

higher tempthan 40°

Question 27

to treat hyperthermia

Answer 27

remove clothes, sponge and cold water

Question 28

hypothermia causes

Answer 28

heat not going to liver and heart narrowed blood vessels

Question 29

treatment for hypothermia

Answer 29

remove wet clothes hot packs on armpit and neck