Chapter 4 Review Questions Flashcards
What is the function of the vasa vasorum?
to supply needed material to nearby cells in vessel wall
Which major luminal wall layer is thickest/most dominant within elastic arteries?
tunica media
What is the tunic media primarily made of in elastic arteries?
fenestrated elastic laminae and smooth muscle
Which major luminal wall layer is thickest/most dominant within muscular arteries?
tunica media
What is the tunica media primarily made of in muscular arteries?
smooth muscle
Which major luminal wall layer is thickest/most dominant within arterioles?
tunica media
What is the tunica media primarily made of in arterioles?
smooth muscle
Why is the endothelium of the tunica intima prone to develop problems in elastic arteries?
fast moving luminal blood
What general tissue type makes up the tunica adventitia of arteries?
CT
Which type of artery has the most developed internal elastic lamina?
muscular artery
Which is the thinnest of the major luminal wall layers in arteries?
tunica intima
Which type of artery has the thickest tunica intima?
elastic artery
Which type of artery is most likely to have degeneration of its tunica intima?
elastic artery
Identify whether it’s metarteriole or AVA:
lacks a true tunica media
metarteriole
Identify whether it’s metarteriole or AVA:
thicker tunica media and tunica adventitia
AVA
Identify whether it’s metarteriole or AVA:
associated with vessels called thoroughfare channels
metarterioles
Identify whether it’s metarteriole or AVA:
found with all capillary beds
metarterioles
Identify whether it’s metarteriole or AVA:
redirects much blood away from capillary beds
AVA
Identify whether it’s metarteriole or AVA:
which enables the functioning of erectile tissues?
AVA
Which type of vessel will divert blood away from capillary beds?
AVA
Which type of vessel allows for the pulsing of blood through true capillaries?
metarterioles
Which cell type, with reparative potential, is found exterior to capillaries and venules?
pericytes
Which cell types can pericytes change into?
fibroblasts, endothelial cell, smooth muscle
Do lymphatic capillaries have pericytes?
No
Do lymphatic capillary endothelial cells join together using tight junctions?
No
Why do lymphatic capillary endothelial cell have attached anchoring filaments?
support the tiny endothelial cell openings to allow interstitial fluid to enter and leave lymph capillaries
Do medium and large lymphatic vessels have 3 major luminal wall layers? If so, what are the layer names?
Yes; tunica intima, tunica media, tunica adventitia
In general, the structure of lymphatic vessels most closely resembles that of… (hint: another blood vessel type)
veins
