Chapter 3 Vascular System

Question 1

Route around body

Answer 1

Arteries -> Arterioles -> Capillaries -> Venules -> Veins -> Heart -> Arteries

Question 2

Arteries

Answer 2

Carry the blood away from the heart to the different organs and tissues of the body

Question 3

3 Layers of Veins and Arteries

Answer 3

1st layer - endothelial cells
2nd layer - smooth involuntary muscle combined with elastic connective tissue
3rd layer - supporting connective tissue

Question 4

Capillaries

Answer 4

smallest blood vessels
they allow blood to contract every cell in the body
allow fluids, wbc, and dissolved substances (nutrients and oxygen) to pass through the cell

Question 5

Veins

Answer 5

BP is lower in veins

Presence of the valves plus the pressure exerted by skeletal muscle that moves the blood back to the heart

Question 6

No pulse?

Answer 6

capillaries also smooth out the flow of blood so that veins show no pulse

Question 7

3 primary veins in the antecubital area

Answer 7

1. Cephalic
2. Basilic
3. Median

Question 8

Vasoconstriction

Answer 8

occurs when the diameter of a blood vessel decreases
BP increase (Contract)

Question 9

Vasodilation

Answer 9

occurs when the blood vessel diameter increases
BP decrease (RELAX)