KA5.1- Arteries+Veins+Capillaries

Question 1

1) Artieries/ veins/ capillaries/ blood vessels… lumen… 12

Answer 1

have a central lumen lined with endothelium

Question 2

After ies/ veins have… layer… 12

Answer 2

a middle layer containing smooth muscle and elastic fibres

Question 3

3) Arteries/ veins … outer wall… 12

Answer 3

have an outer wall of connective tissue containing elastic fibres

Question 4

4) Veins have… wall… 7

Answer 4

thinner muscular wall than arteries

Question 5

5) Veins contain… 8

Answer 5

valves to prevent the backflow of blood

Question 6

6) The elastic walls of the arteries… to accommodate… 21

Answer 6

stretch and recoil go accommodate the surge of blood after each contraction of the heart

Question 7

7) To control blood flow in the arteries, … 18

Answer 7

the smooth muscle can contract causing vasoconstriction or relax causing vasodilation

Question 8

8) Blood circulates from… and back… 19

Answer 8

the heart through the arteries to the capillaries then the veins and back to the heart

Question 9

9) There is a decrease… 14

Answer 9

in blood pressure as blood moves away from the heart

Question 10

10) Capillaries allow… 12

Answer 10

the exchange of substances with tissues through their thin walls

Question 11

11) Pressure filtration causes plasma to… 16

Answer 11

pass through capillary walls into the tissue fluid surrounding the cells