CV System: Blood Vessels

Question 1

Arteries carry blood in what direction relative to the heart?

Answer 1

away from the heart

Question 2

List oxygenated blood vessels in ascending order of size

Answer 2

capillaries, arterioles, arteries

Question 3

Define capillaries

Answer 3

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

Question 4

Vaso vasorum supply oxygen and nutrients to _____

Answer 4

larger blood vessels

Question 5

Vaso vasorum are located _______

Answer 5

within the walls of larger vessels and supply them

Question 6

Define vasoconstriction

Answer 6

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

Question 7

What is the function of elastic arteries?

Answer 7

Propel blood forward while the ventricles are relaxing

Question 8

Medium sized arteries are _______

Answer 8

muscular arteries

Question 9

Arterioles deliver blood to _______

Answer 9

capillaries

Question 10

Capillaries connect _________ to ________

Answer 10

arterioles

venules

Question 11

Capillaries are absent in _______________

Answer 11

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

Question 12

A metarteriole is _________

Answer 12

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

Question 13

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

Answer 13

Continuous,
Fenestrated
Sinusoids

Question 14

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

Answer 14

porous

emigration

Question 15

A vascular (venous) sinus is _________

Answer 15

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

Question 16

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

Answer 16

anastomosis

Question 17

The alternate route of blood flow is known as ________

Answer 17

collateral circulation

Question 18

Arteries that do not anastomose are known as _________

Answer 18

end arteries

Question 19

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

Answer 19

veins

60%