15 Transport Systems in Living Things

Question 1

What is the purpose of the transport system in a human body?

The transport system is aka the circulatory system.

Answer 1

It helps to move substances around different parts of the body.

Question 2

What are the three main components of the human transport system?

Answer 2

1) heart
2) blood vessels
3) blood

Question 3

What is the purpose of the heart?

Answer 3

The ‘pump’ that pushes blood around the whole body.

Question 4

What are the 4 components of the blood?

Answer 4

1) red blood cells
2) plasma
3) white blood cells
4) blood platelets

Question 5

What is the function of the red blood cell?

red blood cells

Answer 5

to transport oxygen to different parts of the body

Question 6

What is the function of the plasma?

Answer 6

to transport water and dissolved substances such as digested food, mineral salts and waste products to different parts of the body

Question 7

What is the function of the white blood cells?

white blood cells

Answer 7

to protect the body by fighting off infections

Question 8

What is the function of the blood platelets?

blood platelets (purple)

Answer 8

to help form a clot when bleeding

Question 9

Name the three types of blood vessels in the human body.

Answer 9

1) artery
2) vein
3) capilary

Question 10

What is the function of the artery?

Answer 10

to transport blood away from the heart

Question 11

What is the function of the vein?

Answer 11

to transport blood back to the heart

Question 12

What is the function of the capilary?

Answer 12

to allow the exchange of digested food, gases and waste materials between the cells and blood.
1) oxygen and digested food from blood to cells
2) carbon dioxide and waste substances from cells to blood

Question 13

What is diffusion?

Answer 13

The movement of substances from a region of higher concentration to a region of lower concentration.

Question 14

Describe how oxygen and digested food move from the blood to the cells.

Think diffusion.

Answer 14

The blood has a higher concentration of digested food and oxygen than the cells.
These substances moved from the blood to the cells by diffusion.

Question 15

Describe how carbon dioxide and waste substances move from the cells to the blood.

Think diffusion.

Answer 15

The cells has a higher concentration of carbon dioxide and waste substances than the blood.
These substances moved from the cells to the blood by diffusion.

Question 16

What are drugs?

Answer 16

They are substances that affect how a body works.

Question 17

State how smoking affects the human body.

Answer 17

It damages the heart, lungs and blood vessels.

Question 18

List some effects drug abuse has on the nervous system.

Answer 18

1) poor balance and coordination
2) slower reaction
3) insomnia
4) anxiety
5) irritability
6) hallucination
7) memory loss

Question 19

List some effects drug abuse has on the circulatory system.

Answer 19

1) irregular heartbeat
2) increased heart rate
3) increased blood pressure
4) increased risk of heart attack
5) increased risk of stroke
6) reduced blood flow to the limbs

Question 20

List some effects drug abuse has on the respiratory system.

Answer 20

1) lung cancer
2) walls of tubes in lungs collapse

Question 21

List some effects drug abuse has on the digestive system.

Answer 21

1) nausea
2) increased risk of mouth and throat cancer
3) severe tooth decay
4) stomach ulcer
5) liver damage