Circulatory System

Question 1

simple sqaumous–>cubiodal ep.; pericytes present, internal elastic lamina

Answer 1

Tunica Intima

Question 2

Variable amount/type of CT (collagenous/elastic tissue); smooth muscle cells, elastic fibers

Answer 2

Tunica Media

Question 3

contain Vasa Vasrum (supply walls of large vessels), smooth muscle cells(long.)

Answer 3

Tunica Adventia

Question 4

largest, TI=prominent collagenous lamina propria; TM=thick, prominent with elastic fibers; TA = Vasa Vasorum

Answer 4

Elastic Arteries

Question 5

TI=elastic fibers and folds when smooth muscle is contracted; TM=smooth muscle;TA=collagenous CT

Answer 5

Muscular Arteries

Question 6

TI=endothelium, BM, little LP; TM=1-3 layers of smooth muscle; TA = very little loose CT
Regulate BP and flow into capillary beds

Answer 6

Arterioles

Question 7

site of gas exchange, TUNICA INTIMA; pericytes wrap around endothelium and both are surrounded by BM

Answer 7

Capillaries

Question 8

function @ site of highly regulated exchange
TJ’s between ep. cells
Prominent in brain/lungs

Answer 8

Continous Capillaries

Question 9

function @ site of permissive exchange
exchange via small gaps
prom. in kidney, intestines, endocrine glands

Answer 9

Fenestrated Capiallaries

Question 10

function @ site of free exchange
free exchange of macro molecules and cells through large gaps
Prom. in bone, liver, spleen

Answer 10

Sinusoidal Capillaries

Question 11

post-capillary
larger diameter compared to arterioles
major site of leukocytes diapedias

Answer 11

Venules

Question 12

folds of tunica intima push into lumen to form valves and facilitate movement of blood to heart
prominent TA, collagenous CT

Answer 12

Small/Medium Veins

Question 13

prominent fibroelastic TA

arranged smooth muscle

Answer 13

Large Veins