Circulatory System

Question 1

What is blood?

Answer 1

A combination of plasma and cells that circulate through the entire body

Question 2

What is the function of blood?

Answer 2

To supply essential substances around the body, such as sugars, oxygen and hormones. It also removes waste from the cells in the body.

Question 3

How many components of blood are there?

Answer 3

Four

Question 4

What are the components of blood?

Answer 4

Plasma, red blood cells, white blood, blood, blood, blood cells and platelets

Question 5

What is plasma?

Answer 5

Plasma is 90% water and makes up 55% of blood volume.

Question 6

What is the function of plasma?

Answer 6

Suspense and carries other cells around the body as well as passing fluid from blood to body tissue

Question 7

What are red blood cells?

Answer 7

Red blood cells make up 99% of our blood cells

Question 8

What is the function of red blood cells?

Answer 8

Carrying oxygen to where it is needed in the body and carrying carbon dioxide and metabolic byproducts away from muscles

Question 9

What is the function of white blood cells?

Answer 9

Fighting infection and disease by destroying bacteria

Question 10

What is the function of platelets?

Answer 10

To form, blood clots at damaged tissues, and to prevent infection and blood loss. They also prevent bleeding when muscle tissue is damaged during exercise.

Question 11

What are the functions of blood?

Answer 11

Transport, protection and regulation

Question 12

What is the function of the heart?

Answer 12

To pump blood and distribute oxygen and nutrients throughout the body

Question 13

What is the right hand side of the heart responsible for?

Answer 13

Pumping deoxygenated blood to the lungs

Question 14

What is the left-hand side of the heart responsible for?

Answer 14

Pumping, oxygenated blood around the body

Question 15

What does each side of the heart consist of?

Answer 15

An atrium and a ventricle, which are two connected Chambers

Question 16

Label the heart

Answer 16

…

Question 17

What are arteries?

Answer 17

Strong, flexible and resilient, arteries, carry blood away from the heart and bear the highest blood pressures. Because arteries are elastic, they narrow passively when the heart is relaxing between beats and helps maintain blood pressure

Question 18

What are veins?

Answer 18

Veins have thin walls and low-pressure and can widen as the amount of fluid in them increases

Question 19

What is the function of veins?

Answer 19

To carry deoxygenated blood back from the tissues to the heart

Question 20

What are valves?

Answer 20

A bodily structure that closes temporarily to prevent passage of material or allows movement of a fluid in One direction only

Question 21

What are capillaries?

Answer 21

Capillaries are the smallest and most numerous of the blood vessels that form the connection between the arteries and veins

Question 22

What is the function of capillaries?

Answer 22

To exchange materials between the blood and tissue cells

Question 23

Why is it difficult for blood in veins to return to the heart?

Answer 23

Gravity makes it hard for the blood to travel up, valves help to direct the blood and stop it from going backwards

Question 24

What is pulmonary circulation?

Answer 24

Pulmonary circulation Moose Blood between the heart and the lungs. It transports deoxygenated blood to the lungs to absorb oxygen and release carbon dioxide. The oxygenated blood, and flows back to the heart.

Question 25

What is systemic circulation?

Answer 25

Systemic circulation moves, blood between the heart and the rest of the body

Question 26

What are the functions of the heart?

Answer 26

Heart rate, stroke volume and cardiac output

Question 27

What is a heart rate?

Answer 27

A measure of the number of times the heart beats per minute

Question 28

What is stroke volume?

Answer 28

The amount of blood in millilitres ejected from the heart per contraction

Question 29

What is cardiac output?

Answer 29

The amount of blood injected by the heart per minute

Question 30

What is blood pressure?

Answer 30

The pressure of your blood against the inner walls of your arteries

Question 31

What is diastole and systole?

Answer 31

These are the two phases of the cardiac cycle

Question 32

Describe diastole

Answer 32

The face of the heart beat when the heart muscle relaxes and allows for the chambers to fill with blood

Question 33

Describe systole

Answer 33

The phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries

Question 34

How is BP expressed?

Answer 34

As a measurement with two numbers, like a fraction. The systolic on top and the diastolic on the bottom

Question 35

What does the top number of your blood pressure refer to?

Answer 35

The amount of pressure in your arteries during the contraction of your heart muscle

Question 36

What does the bottom number of your blood pressure refer to?

Answer 36

Your blood pressure when your heart muscle is between beats

Question 37

What is a normal resting heart rate for adults?

Answer 37

Between 60 to 100 bpm

Question 38

What factors can affect your heart rate?

Answer 38

Emotions, body temperature, dehydration, lack of sleep, poor nutrition, exercise, illness, medication and weather

Question 39

What units is stroke Volume measured in?

Answer 39

mL

Question 40

What is the equation for cardiac output?

Answer 40

Heart rate multiplied by stroke volume

Question 41

What is cardiac output measured in?

Answer 41

L