CV System: Blood Vessels Flashcards Preview

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Flashcards in CV System: Blood Vessels Deck (19):
1

Arteries carry blood in what direction relative to the heart?

away from the heart

2

List oxygenated blood vessels in ascending order of size

capillaries, arterioles, arteries

3

Define capillaries

Tiny vessels which allow exchange of substances between the blood and body tissues

4

Vaso vasorum supply oxygen and nutrients to _____

larger blood vessels

5

Vaso vasorum are located _______

within the walls of larger vessels and supply them

6

Define vasoconstriction

a decrease in the diameter of the lumen of a blood vessel

7

What is the function of elastic arteries?

Propel blood forward while the ventricles are relaxing

8

Medium sized arteries are _______

muscular arteries

9

Arterioles deliver blood to _______

capillaries

10

Capillaries connect _________ to ________

arterioles
venules

11

Capillaries are absent in _______________

covering and lining epithelia,
cornea of the lens of the eyes,
cartilage

12

A metarteriole is _________

a vessel that emerges from an arteriole and supplies a group of 10-100 capillaries (capillary bed)

13

List the different types of capillaries in ascending order of pore size

Continuous,
Fenestrated
Sinusoids

14

The walls of the smallest venules are very _____ and serve as a site of ________ for white blood cells

porous
emigration

15

A vascular (venous) sinus is _________

a vein with a thin endothelial wall that has no smooth muscle to alter its diameter

16

The union of the branches of two or more arteries supplying the same body region is called an ________

anastomosis

17

The alternate route of blood flow is known as ________

collateral circulation

18

Arteries that do not anastomose are known as _________

end arteries

19

The largest portion of your blood volume at rest is in the ________. What percentage?

veins
60%