Blood Vessel Notes

Front 1

Blood Vessels

Back 1

A closed vascular system

Front 2

Blood leaving the heart first enters the _____ and then other large ________

Back 2

Blood leaving the heart first enters the aorta and then other large arteries

Front 3

Then, blood then moves into successively smaller and smaller arteries and then into __________ ?

Back 3

Then, blood then moves into successively smaller and smaller arteries and then into arterioles

Front 4

Finally blood enters ___________, the narrowest of vessels, feed tissues

Back 4

Finally blood enters capillaries, the narrowest of vessels, feed tissues

Front 5

Capillaries are drained by smaller _______

Back 5

Capillaries are drained by smaller venules

Front 6

Then venules feed into larger _____?

Back 6

Then venules feed into larger veins

Front 7

Finally, blood enters _________ to return to the heart

Back 7

Finally, blood enters vena cava to return to the heart

Front 8

Except for capillaries, _______ have three layers

Back 8

Except for capillaries, vessels have three layers

Front 9

Tunica Intima

Back 9

Innermost, thin layer - slick layer for smooth blood flow

Front 10

Tunica media

Back 10

Middle layer containing elastic and smooth muscle tissues - a layer that controls the diameter of vessels and thus, amount of blood flow through vessels

Front 11

Tunica Externa

Back 11

Outermost, fibrous layer - supports and protects organs

Front 12

Arteries

Back 12

- carry blood away from the heart

- usually carry deoxygenated blood

- thicker than veins

- thicker tunica media (elastic & smooth muscle layer)

- must be stronger & stretchier than veins because they expand and recoil with each heart beat

Front 13

Veins

Back 13

- Carry blood to the heart

- usually carry deoxygenated blood

Thinner walls

- modified to ensure blood returns to the heart

- valves to prevent backflow

- surrounded by skeletal muscle

- wider in diameter

Front 14

Capillaries

Back 14

- Thin walls

- Tunica intima only

- Perfect for exchange between blood & cells

- forms interweaving networks capped capillary beds

Contains two types of vessel

Vascular Shunt - connects arteriole & venule

True Capillaries - actually exchange vessel

Front 15

Capillary exchange

Back 15

- Substances move to & from body cells along their concentrational gradients

- oxygen and other nutrients leave blood & enters cells

- carbon dioxide & other wastes leave cells & enter blood

Front 16

Four ways to enter or exit bloodstream:

Back 16

1.) diffusion across tunica intima of capillary (* must be lipid soluble (gases))

2.) endocytosis or exocytosis

3.) through intracellular clefts (gaps in membrane)

4.) fenestrated capillaries (pores in membrane)

Front 17

_____________ tends to push fluids & solutes out of capillaries

Back 17

Blood pressure tends to push fluids & solutes out of capillaries

Front 18

_______________ tends to draw fluid back into capillaries because blood has a higher solute concentration than the surrounding fluids (due to plasma proteins)

Back 18

Osmotic pressure tends to draw fluid back into capillaries because blood has a higher solute concentration than the surrounding fluids (due to plasma proteins)

Front 19

Blood pressure is highest at ________ end of capillary bed - so materials leave vessels

Back 19

Blood pressure is highest at arterial end of capillary bed - so materials leave vessels

Front 20

Osmotic pressure is highest at ______ end of capillary bed - so materials are reclaimed

Back 20

Osmotic pressure is highest at venous end of capillary bed - so materials are reclaimed

Front 21

Put these is order: aorta, arteriole, artery, capillary bed, venae cava, vein, venule

Back 21

1. oxygenated blood leaves left ventricle

2) aorta

3. Artery

4.) Arteriole

5. Capillary Bed

6.) Venule

7.) Vein

8.) Vende Cavare

9.) deoxygenated bleed returns to right atrium

Front 22

Is thicker describing arteries or veins

Back 22

Arteries

Front 23

Is more elastic describing arteries or veins

Back 23

Arteries

Front 24

Is carrying blood to the heart describing arteries or veins

Back 24

Veins

Front 25

Is being assisted by skeletal muscle describing arteries or veins

Back 25

Veins

Front 26

Is being received blood at highest pressure describing arteries or veins

Back 26

Arteries

Front 27

Is usually carrying deoxygenated blood describing arteries or veins

Back 27

Veins

Front 28

Does being thinnest match

A = tunica intima, B = tunica media, C = tunica external

Back 28

A

Front 29

Does exchange match

A = tunica intima, B = tunica media, C = tunica external

Back 29

A

Front 30

Does most elastic match

A = tunica intima, B = tunica media, C = tunica external

Back 30

B

Front 31

Does the middle layer match

A = tunica intima, B = tunica media, C = tunica external

Back 31

B

Front 32

Does the inner most layer match

A = tunica intima, B = tunica media, C = tunica external

Back 32

A

Front 33

Does the outermost layer match

A = tunica intima, B = tunica media, C = tunica external

Back 33

C

Front 34

Does protects & supports match

A = tunica intima, B = tunica media, C = tunica external

Back 34

C

Front 35

Does changing amount in blood flow match

A = tunica intima, B = tunica media, C = tunica external

Back 35

B

Front 36

Does narrow and widened vessel diameter match

A = tunica intima, B = tunica media, C = tunica external

Back 36

B