Down Flashcards Preview

Biology 12: Circulatory System > Down > Flashcards

Flashcards in Down Deck (30)
Loading flashcards...
1

Occurs on the left side of heart

Systematic circulation

2

These veins return blood from head

Jugular veins

3

Prevents the back flow of blood as the right ventricle contracts to pump blood to the lungs

Pulmonary semilunar valve

4

Created by the presence of salts and plasma proteins found in blood

Osmotic pressure

5

Takes blood from heart to small intestines

Mesentery artery

6

Known as the pacemaker, as it initiates the heartbeat

The SA node

7

The expansion of blood vessels during systole

Pulse

8

Substances tend to move into the cells on what side of the capillaries

Arterial

9

Number of layers of tissue in arteries

3

10

A device used for measuring blood pressure

Sphygmomanometer

11

Blood pressure is lowest in the

Venules and veins

12

Type of muscle found in the heart

Cardiac

13

Carry blood to head

Carotid arteries

14

Substances tend to move out of cells and into blood on what side of capillaries

Venous

15

Structures in veins which prevent the back flow of blood

Valves

16

Tiny blood vessels which deliver nutrients to individual cells

Capillaries

17

Returns blood from the parts of the body that are above heart

Superior vena cava

18

Max contraction of the ventricles - highest pressure

Systole

19

The wall which divides the 2 sides of the heart

Septum

20

These arteries and veins take blood to and from the arms

Subclavian arteries

21

Another name for the left atrioventricular valve

Bicuspid

22

Take blood to ❤️

Coronary arteries

23

What is affected by stress, oxygen levels, exercised and blood pressure

Heart rate

24

Total cross sectional area of the blood vessels is highest in where

Capillary beds

25

Carry electrical signal down to ventricles to initiate contraction

Purkinje fibres

26

The aorta divides into

Iliac arteries is n the pelvic region

27

These muscles can contract to stop blood flow to capillary beds in certain areas of body

Sphincter

28

Capillaries are only how thick in order to allow the most efficient transport of materials across their walls

One cell layer

29

Where blood first leaves the left ventricle

Aortic arch

30

One of the layers found in the arteries which allows them to “stretch” during a pulse

Elastin