Chapter 7- The Circulatory System

Question 1

Three main functions of the circulatory system

Answer 1

1. Transport- for energy and remove waste
2. Protect- protect body against disease
3. Regulate, help regulator body temp

Question 2

What are four things blood cells are made of

Answer 2

Plasma
Red blood cells
White blood cells
Platelets

Question 3

What is plasma

Answer 3

Plasma is a bright yellow liquid made up of mostly water, dissolved substances, like oxygen and gluecose are carried around in plasma, plasma also carries waste away from the cells, such as carbon dioxide and urea

Question 4

Red blood cells

Answer 4

Transport oxygen for respiration, contains a red pigment called haemoglobin

Question 5

White blood cells

Answer 5

Protect the body for disease and function by fighting harmful micro-organisms like bacteria and viruses or by producing antibodies that kill them

Question 6

Platelets

Answer 6

Platelets are tiny fragments of larger cells, they help the blood to clot

Question 7

Arteries

Answer 7

Arteries carry blood away from the heart. They are thick to withstand the high pressure of blood pumped out of the heart

Question 8

Veins

Answer 8

Veins carry blood to the heart and are thinner than arteries, they usually carry deoxygenated blood, which contain low levels of oxygen snd high levels for carbon dioxide

Question 9

Capillaries

Answer 9

Capillaries are small blood vessels that link arteries and veins

Question 10

The heart, what is it made of

Answer 10

The heart is made of a very strong cardiac muscle

Question 11

What are the two sides of a heart seperated by

Answer 11

The septum

Question 12

There are four chambers in the heart

Answer 12

Upper- left and right atria
Lower- left and right ventricles
They are separated by valves

Question 13

Pulse

Answer 13

The pulse is a way of vibration that passes through an artery when blood is forced out of the heart