CV System - Circulation + BP

Question 1

what does the circulatory system do

Answer 1

delivers food and oxygen, removes waste such as CO2

Question 2

what are the 4 chambers of the heart

Answer 2

right atrium, right ventricle, left atrium, left ventricle

Question 3

blood enters the right atrium through what

Answer 3

inferior vena cava

Question 4

blood flows through the right atrium through the _____ to the right ventricle

Answer 4

tricuspid valve

Question 5

blood flows from the pulmonary arteries to the ____

Answer 5

lungs

Question 6

About 55% of blood is a yellowish fluid called ____

Answer 6

Plasma

Question 6

T or F?
Contraction of the left ventricle forces blood throughout the body

Answer 6

TRUE

Question 6

Which of the chambers have the thickest walls?

Answer 6

Ventricles
Because they pump blood the farthest

Question 7

Arteries carry blood ______ the heart

Answer 7

away from

Question 8

What is the function of RBC

Answer 8

carry oxygen

Question 9

What is the function of WBC

Answer 9

to attack foreign particles

Question 10

Veins carry blood ___ the heart

Answer 10

TOWARDS

Question 11

Capillaries…

Answer 11

connect arteries and veins

Question 12

All arteries except the _____ carry oxygenated blood?

Answer 12

pulmonary artery

Question 13

Systolic pressure is

Answer 13

the increased pressure during heart contraction

Question 14

Diastolic pressure is

Answer 14

the decreased pressure when the heart is relaxed

Question 15

What is blood pressure measured in?

Answer 15

Millimetres of mercury (mmHg)

Question 16

What blocks the backflow of blood in veins?

Answer 16

Valves

Question 17

what is the correct order of blood flow through the heart

Answer 17

vena cava
RA
RV
pulmonary artery
lungs
pulmonary vein
LA
LV
aorta

Question 18

what vessels carry DEoxygenated blood to the lungs

Answer 18

pulmonary artery (the ONLY artery carrying DEoxygenated blood)

Question 19

what vessels carry oxygenated blood from the lungs to the heart

Answer 19

pulmonary veins (only veins carrying oxygenated blood)

Question 20

what are arteries?

Answer 20

blood vessels that carry blood AWAY from the heart

Question 21

what are veins

Answer 21

blood vessels that carry blood TOWARD the heart

Question 22

what are capillaries

Answer 22

vessels where gas and nutrient exchange occurs

Question 23

what is systemic circulation

Answer 23

blood flow from the heart to the body and back

Question 24

what is pulmonary circulation?

Answer 24

blood flow from the heart to the lungs and back

Question 25

what is stroke volume

Answer 25

amount of blood pumped by each ventricle per beat

Question 26

what is cardiac output

Answer 26

stroke volume x heart rate

Question 27

what part of the heart has the thickest wall and why

Answer 27

left ventricle - pumps blood to the whole body

Question 28

what is the normal capillary refill time

Answer 28

less than 2-3 seconds

Question 29

what can slow capillary refill?

Answer 29

shock, cold, poor perfusion, hypothermia

Question 30

what is systolic blood pressure

Answer 30

pressure when the heart contracts

Question 31

what is diastolic blood pressure

Answer 31

pressure when the heart relaxes

Question 32

what causes an increase in heart rate in pregnancy

Answer 32

increased cardiac output + hormones

Question 33

how much does cardiac output increase during pregnancy

Answer 33

30-50%

Question 34

what is supine hypotension?

Answer 34

drop in BP when lying on their back due to pressure on the vena cava

Question 35

how do you correct supine hypotension

Answer 35

turn the pregnant person onto their left side

Question 36

why are varicose veins more common in pegnancy

Answer 36

reduced venous return + vasodilation + uterine pressure