Vascular System

Question 1

Red drawing

Answer 1

Oxygenated

Question 2

Blue drawing

Answer 2

Deoxygenated

Question 3

Vascular system components

Answer 3

Arteries, arterioles, veins, venules, capillaries

Question 4

Arteries function

Answer 4

Carry oxygenated blood to tissues

Question 5

Bifurcate

Answer 5

Branch (eg arteries bifurcate into smaller arteries)

Question 6

Veins converge

Answer 6

To venules to form larger veins

Question 7

Veins function

Answer 7

Return blood to the heart through the superior vena cava

Question 8

Capillaries function

Answer 8

Provide nutrients, remove waste products

Question 9

Starts at the heart ->

Answer 9

Artery, arteriole, capillary, venule, vein, heart

Question 10

Blood vessels have 3 linings

Answer 10

Tunica interna - inner most lining
Tunica media
Tunica externa- outer most lining

Question 11

Endothelium cells function

Answer 11

Regulate blood flow, prevent clotting, produce chemicals to relax smooth muscle to help blood flow

Question 12

Tunica externa is made of

Answer 12

Connective tissue fibres

Question 13

Tunica externa helps

Answer 13

Support blood vessels

Question 14

Vasoconstriction

Answer 14

Blood vessels constrict

Question 15

Vasodilation

Answer 15

Blood vessels dilate to help with thermoregulation

Question 16

Aorta features

Answer 16

Thick tunica media, lots of elastin and smooth muscle so it can expand and recoil, large lumen with low resistance to blood flow

Question 17

Elastic artery example

Answer 17

Aorta

Question 18

Arterioles features

Answer 18

Smallest arteries, close to capillaries for gas exchange, resistance vessels to help maintain hydrostatic pressure

Question 19

Venous system problems

Answer 19

Varicose veins- long hours standing or too fast weight gain

Question 20

Venules have a

Answer 20

Superior and inferior vena cava

Question 21

Capillaries features

Answer 21

Thinnest walls for gas exchange