Circulatory System

Question 0

Functions of the circulatory system

Answer 0

Transport blood

• Nutrients and oxygen to cells
• Waste products away from cells

Question 1

Respiration

Answer 1

The metabolic process whereby organisms obtain energy from organic molecules

Question 2

Main parts of the circulatory system

Answer 2

• Heart
• Blood vessels
• Blood

Question 3

The heart

Answer 3

• Muscular organ
• Pumps blood around the body
• Contains two sides and four chambers

Question 4

Closed circulatory system

Answer 4

Blood flows around the body enclosed in the blood vessels

Question 5

Arteries

Answer 5

• Blood vessels taking blood away from the heart
• Have thicker, more muscular walls than veins

Question 6

Capillaries

Answer 6

• Tiny blood vessels
• Walls a single layer of cells
• Allow substances to pass through easily

Question 7

Veins

Answer 7

• Capillaries join to form veins
• Blood vessels that transport blood towards the heart
• Has thiner walls than arteries

Question 8

Two main pathways of the blood in the body involving the lungs, the heart and rest of the body.

Answer 8

1. Oxygen deprived blood pumped from heart to lungs to return oxygenated blood to the heart
2. Oxygenated blood pumped to the rest of the body to return deoxygenated blood to the heart

Question 9

Health issues relating to the circulatory system

Answer 9

High blood pressure

Heart attack

Stroke

Question 10

High blood pressure

Answer 10

• Blood pushed agains artery walls too high.
• Artery walls compensate by pushing back harder and become thickened
• Less space for blood to flow

Question 11

Heart attack

Answer 11

• Blood flow to the actual heart muscle blocked.
• Muscle dies or gets damaged

Question 12

Stroke

Answer 12

• Blood flow to brain stopped
• Blood vessels burst or blocked by a clot
• Brain cells begin to die