Soc 15

Question 1

What are the 3 main functions of the cardio vascular system

Answer 1

To pump blood towards the cells
To transport oxygen from lungs
Carry oxygenated and deoxygenated blood round the body

Question 2

What is vascular shunting ?

Answer 2

Vascular shunting is the direction blood flows around the body

Question 3

What are the characteristics of : Arteris, Veins, Capillares

Answer 3

Arteries take blood away from the heart
Veins carry blood to the heart
Capillares carry oxygenated blood which transfers oxygen and nutrients to the muscles

Question 4

What makes up the cardiovascular system

Answer 4

Is formed by our heart and blood vessels. Cardio means the heart and vascular means blood vessels

Question 5

What are the 3 main functions of the cardiovascular fitness

Answer 5

. Transports oxygen,carbon dioxide and nutrients
. Heart pumps oxygen around the body
. Controlls our body temp
.

Question 6

What is vascular shanting

Answer 6

Process that increases blood flow to active areas during exercise by diverting blood away from inactive areas! Achieved by vasodilation and vasconstriction.

Question 7

What is cardio respiratory system

Answer 7

The interaction of the heart and lungs to supply oxygen to muscles during exercise

Question 8

What are Arteries

Answer 8

.Arteries take oxygenated blood away from the heart
.Arteries have thick walls and are more elastic than veins

Question 9

What are veins

Answer 9

Carry blood into the heart
Veins have much thinner walls and carry deoxygenated blood at a lower pressure

Question 10

What are Capillaries

Answer 10

.Cappileries are microscopic vessels- just one cell thick
.Carries oxygenated blood which transfers oxygen and nutrients to the working muscles
.Carries deoxygenated blood into the veins picking up

Question 11

Structure of the heart

Question 12

What is the systolic phase

Answer 12

.Where blood is pumped from both atria into the ventricles
.pushing deoxygenated blood to leave the right ventricle to the lungs via thenpulmonary artery

Question 13

What is the diastolic phase

Answer 13

Thisnis when the heart is relaxing and refilling with the atria with blood

Question 14

Blood pressure

Answer 14

Blood pressure is a measure of the force that your heart uses to pump the blood around your body.

Question 15

Why are red blood cells important

Answer 15

Red blood cells transport oxygen from the lungs to the body’s cells and carbon dioxide from the cells to the lungs. They contain haemoglonpbin which stores oxygen and carbon dioxide.

Question 16

What is the importance of white blood cells

Answer 16

They are the defence system of the body which produces antibodies to fight against infection and diseases.

Question 17

What is the importance of platelets

Answer 17

Blood plaelets are formed in the bone marrow in which blood is the first line of defence to repair a wound. When a blood vessel is cut platelets rush to the area amd swell into irregular shapes, they become sticky and act as a plug.

Question 18

What is the importance of plasma

Answer 18

Plasma takes nutrients,hormones and proteins to the parts of the body that need it