Blood Vessels

Question 1

Structure of arteries

Answer 1

Thick smooth muscle layer
Elastic tissue layer
Thick wall
Smooth endothelium 
Narrow lumen

Question 2

Purpose of thick muscle layer

Answer 2

Control/ maintenance of high blood pressure

Question 3

Purpose of elastic tissue layer

Answer 3

Able to strech during ventricluar systole and recoil diastole
Reduces pressure surges in blood

Question 4

Purpose of a thick wall

Answer 4

Withstand high pressure

Question 5

Purpose of a narrow lumen

Answer 5

Maintain high blood pressure

Question 6

Function of arterioles

Answer 6

Arteries- smaller vessels

With the job of directing blood and controling the vollume of blood into the capillaries

Question 7

Structure of arterioles

Answer 7

Thicker smooth muscle layer- vaso contriction/ dislation

Thinner elastic layer (less pressure surges)

Question 8

Structure of veins

Answer 8

Wider lumen- carry blood at lower pressure
Very little elastic/ musclular tissue
Values- to prevent back flow

Question 9

What blood vessel vists the heart?

Answer 9

Veins

Question 10

Structure of capillaries

Answer 10

Wall one cell thick- short diff path
Narrow lumen- slow max time difussion, bood cells pressed agsaint walls- short diff path
Large network- SA
Pores in walls- white blood cells big

Question 11

Role of capillaries

Answer 11

Exchange of substances gasess nutrients glucose ect between blood tissue fluid and cells

Question 12

Job of tissue fluid

Answer 12

Provide respiring cells with water ox glucose amino

Enables waste products CO2 lactic acid urea to move back into blood to then be removed out of body @ kidneys