Vessels

Question 1

Blood Vessles have 3 layers. What are there names?

Answer 1

1. Tunica Intima
2. Tunica media
   3.Tunica Externa

Question 2

Tunica Intima

Answer 2

innermost lining

Question 3

Tunica media
What layer is it?
what does in contain?

Answer 3

middle layer. contains smooth muscle

Question 4

Tunica Externa
What layer is it?
what does it do?

Answer 4

Outermost layer that anchors vessels to adjacent tissues

Question 5

Which diameter does vessel contraction/relaxation change?

Answer 5

The inner diameter

Question 6

What is contraction of vessles known as?

Answer 6

Vaso/venoconstriction

Question 7

What is relaxation of vessles known as?

Answer 7

vaso/vendodilation

Question 8

Arteries
(3 main points)

Answer 8

-Largest muscle for systemic blood delievery
-thick muscular walls are highly elastic to withstand PRESSURE
-no gas echange

Question 9

Arterioles

(what do they help with)

Answer 9

-Smaller branch of arteries that has thin, muscular walls that can contract to help with direction of blood flow

Question 10

Capillariers
(3 main points)

Answer 10

-The smallest vessles
-thin walls DO permit gas exchange
-Have no muscle to control blood flow

Question 11

Venules
-undirectional or multidirectional?
what do they help with?

Answer 11

-unidirectional branch of thin veins
-complient walls help with storing lots of blood

Question 12

Veins
2 points

Answer 12

-The largest vessles for systemic blood return
-have compliant muscular walls and ONE-WAY valves to pump blood back to heart

Question 13

What do veins do with blood?
what do arteries do with blood?

Answer 13

veins bring blood TO the heart
Artteries pump blood AWAY from heart