1.2.2 structure and functions of arteries, veins and capillaries

Just to the point!

HideShow resource information

Functions and structure

Arteries:

function:

  • Carries blood away from the heart to the body.

Structure:

  • Relatively small lumen to withstand high pressure
  • Endothelium so it can fold and unfold
  • Smooth muscle to relax and constrict the lumen
  • Fibrous Collagen
  • For strength
  • Elastic fibers
  • So it can stretch and recoil
1 of 3

Veins

Veins

Function: Helps blood return to the heart

Structure: Lumen is large and floppy to allow easy flow of blood.

The rest is the same as above.

2 of 3

Capillaries

Function: Exchange of gases

Structure:

One thin layer of endothelium only to allow rapid gas exchanges.

3 of 3

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Human, animal and plant physiology resources »