Topic B4 - Transport

Question 1

What are the two loops of the heart?

Answer 1

• The first transports blood to the lungs

- The second transports blood around the tissues of the body

Question 2

What is a double circulatory system?

Answer 2

A double circulatory system is one where the blood passes through the heart twice to do one complete circuit of the body

Question 3

Features of arteries:

Answer 3

Elastic fibres and smooth muscle
Lumen
Carries blood away from the heart

Question 4

Features of a vein

Answer 4

Elastic fibres and smooth muscle
Large lumen
Carry blood to the heart

Question 5

Features of a Capillary

Answer 5

Thin wall - only one cell thick
Very small lumen
Nucleus of a cell
Are involved in the change of materials at tissues