final exam: ch 23 Flashcards
1
Q
layers of the vessels are called
A
tunics
2
Q
outer most layer of veins is called the
A
tunica externa
3
Q
tunica externa helps
A
anchor the vessel to the organ
4
Q
what structure runs through the tunica externa
A
vasa vasorum
5
Q
contraction of this layer of the vessel results in vasoconstriction/dilation
A
tunic media
6
Q
name for inner most vessel layer
A
tunica intima
7
Q
__ have low pressure
A
veins
8
Q
__ have high pressure
A
arteries
9
Q
what holds 60% of the body’s blood supply
A
veins
10
Q
do veins have valves
A
yes
11
Q
3 types of arteries (e,m,a)
A
elastic, muscular, arterioles
12
Q
location of elastic arteries
A
near heart
13
Q
this is the key for BP change
A
arterioles
14
Q
__ is the smallest vessel, wall is __ layer of epithelial cells, only __ exchange
A
capillary, 1, metabolic
15
Q
capillaries form capillary __
A
beds
