Biology - Circulatory System

Question 1

What does the circulatory system in your body carry?

Answer 1

Blood and dissolved substances to and from different places in your body

Question 2

What is the heart’s job?

Answer 2

Pumping these things around the body

Question 3

Blood Vessels

Answer 3

The heart pumps blood and substances around the body in tubes called blood vessels

Question 4

2 things that make up the circulatory system

Answer 4

Heart and blood vessels

Question 5

What is Double Circulatory System?

Answer 5

Has 2 parts / paths

Question 6

What does the right side of the system deal with?

Answer 6

Deoxygenated blood

Question 7

What does the left side of the system deal with?

Answer 7

Oxygenated Blood

Question 8

3 types of blood vessels

Answer 8

1. Artery
2. Vein
3. Capillary

Question 9

3 point - Artery Definition (function)

Answer 9

• Carry blood AWAY from the hart
• Elastic fibres allow the artery to stretch under pressure
• The thick muscle can contract to PUSH the blood along

Question 10

2 point - Vein Definition (function)

Answer 10

• Carry blood TOWARDS the heart
• Veins have valves

Question 11

What are valves?

Answer 11

Veins have valves which act to STOP the blood from going in the wrong direction

Question 12

2 point - Capillary Definition (function)

Answer 12

• Capillaries link arteries to veins
• They exchange materials between the blood and other body cells

Question 13

What is the wall of a capillary made up of?

Answer 13

1 thick cell & is made up of epithelial tissue

Question 14

What is a capillary bed?

Answer 14

A collection of capillaries

Question 15

5 Parts of Blood - Veins:

Answer 15

1. Red blood cells
2. White blood cells
3. Platelets
4. Plasma
5. Valves

Question 16

What are Red Blood Cells: Haemoglobin

Answer 16

A molecule that is designed to hold and carry oxygen to cells that need it

Question 17

What are white blood cells?

Answer 17

Protect the body from disease / platelets to help blood clot

Question 18

What are platelets?

Answer 18

• Bits of broken off larger cells
• Form blood clot

Question 19

3 circulatory system disorders

Answer 19

1. High blood Pressure
2. Heart Attack
3. Stroke

Question 20

High Blood pressure:
1. What’s the risk?
2. How to reduce the risk
3. Three symptoms

Answer 20

1. Increased risk of heart attack / stroke
2. Reducing salt, lowering stress, & regular exercises
3. Symptoms
   - Headaches
   - Shortness of breath
   - Heart racing

Question 21

Heart Attack:
1. What happens?
2. Five symptoms

Answer 21

1. PLAQUE builds up in arteries consisting of fat / calcium where the coronary artery slows or stops the blood flow to the HEART
2. Symptoms:
   - Tissue in the hear muscle starts to die due to lacking blood flow
   - Chest Pain
   - Trouble Breathing
   - Discomfort in stomach
   - Feeling Light headed

Question 22

Stroke:
1. How’s it caused?
2. Five symptoms

Answer 22

1. PLAQUE build up or a BLOOD CLOT in the arteries that prevents blood from getting to the BRAIN
2. Symptoms:
   - Paralyzed
   - Losing Memory
   - Lose motor-function
   - Lose ability to speak
   - Face drooping

Question 23

If you were oxygenated blood, which vessel would you travel out of your heart from and what type of cell would you be?

Answer 23

The arteries since they take the blood away from the heart. This would be a red blood cell (production of oxygen).