Soc 15 + 16

Question 1

3 mains functions of CV system?

Answer 1

Ciculates oxygen, provides cells with nutrients, remove waste products such as carbon dioxide.

+ clots blood in injury

Question 2

What is vascualr shunting?

Answer 2

The widening or constricting of the arteries and veins to allow more/less blood around the body and to radiate body temperature

Question 3

Vasodilation

Answer 3

Veins/arteries get wider

Question 4

Vasoconstriction

Answer 4

Veins/arteries get smaller (lumen)

Question 5

Characterstics of arteries

Answer 5

Takes blood AWAY from the heart

Question 6

Characterstics of veins

Answer 6

Being blood IN to the heart

Question 7

Charactertics of capilleries

Answer 7

Blood vessels

Question 8

What is the CV system?

Answer 8

Cardio - Heart
Vascular - Blood vessels

Question 9

Blood clotting

Answer 9

Blood contains PLATELETS helps clot blood and form a scab which stops bleeding and starts healing process

Question 10

How does CV systemcontrol body temp?

Answer 10

Blood vesseles get bigger (vasodilation) to let the heat radiate out.

Blood vessels get smaller (vasoconstriction) to reduce heat radiation.

Question 11

Vascular shunting

Answer 11

Increases bloodflow to active areas during exercise and away from inactive areas

Question 12

How does heart rate increase?

Answer 12

Body releases adrenaline and diverts blood away from organs to active muscles