The Cardiovascular System

Question 1

Components:

Answer 1

> The heart
Blood vessels
Blood

Question 2

Functions:

Answer 2

> Deliver oxygen and nutrients
Removal of waste products (CO2 and lactic acid)
Thermoregulation
Clotting blood
Fighting infection

Question 3

Structure:

Answer 3

1) Superior vena cava
2) Aorta
3) Pulmonary artery
4) Pulmonary vein
5) Left atrium
6) Bicuspid valve
7) Left ventricle
8) Septum
9) Inferior vena cava
10) Right ventricle
11) Tricuspid valve
12) Right atrium
13) Semi-lunar valves

Question 4

Arteries: function

Answer 4

Transport blood away from the heart at a high pressure

Question 5

Arteries: structure

Answer 5

> Narrow lumen
Thick inner muscle (elastic and pulsates)
Thick vessel wall

Question 6

Veins: function

Answer 6

Transport blood to the heart at a low pressure

Question 7

Veins: structure

Answer 7

> Wide lumen
Valve
Thin inner muscle
Thin vessel wall

Question 8

Capillaries: function

Answer 8

Allows gaseous exchange and delivery of nutrients (link between arteries and veins)

Question 9

Capillaries: structure

Answer 9

> Very narrow lumen
No muscle wall
One cell thick vessel wall

Question 10

Flow of deoxygenated blood:

Answer 10

Body > Vena cava > Right atrium > Tricuspid valve > Right ventricle > Semi-lunar valve > Pulmonary artery > Lungs

Question 11

Flow of oxygenated blood:

Answer 11

Lungs > Pulmonary vein > Left atrium > Bicuspid valve > Left ventricle > Semi-lunar valve > Aorta > Body