Cardiovascular System

Question 1

Outline the function of the left ventricle (2 marks)

Answer 1

Pumps oxygenated blood, which is sent to the aorta

Question 2

Outline the function of the right atrium (2 marks)

Answer 2

Pumps deoxygenated blood and sends it to the right ventricle

Question 3

Describe the structure of veins (2 marks)

Answer 3

Thin walls

Valves

Question 4

Describe the structure of capillaries (2 marks)

Answer 4

Small lumen

Permeable walls

Question 5

Explain how heart rate is regulated (6 marks)

Answer 5

The involuntary nervous system has overall control of the heart rate, the sympathetic system speeds up the rate whilst the parasympathetic nervous system, slows the rate down

Question 6

Explain how heart rate is regulated

Answer 6

Sympathetic nervous system speeds it up

Pacemaker regulates the beat