Review Questions Flashcards
Specifically where are most purkinje fibers found within the heart?
sub-endocardium of endocardium
Ions and sarcoplasm will quickly move through which portion of intercalated discs?
longitudinal portion
Which type of cell junction enables this quick movement?
large gap junctions
Name the internal single cell layer lining the heart’s chambers?
endothelium
Myofibrils are pushed peripherally within purkinje fibers due to the storage of what substance?
glycogen
Special hormone secreting myoendocrine cells are found in which heart layer?
myocardium
Which major luminal wall layer is thickest/most dominant within arterioles?
tunica media
What is the tunic primarily made of?
smooth muscle
Why is the endothelium of the tunica intima prone to develop problems in elastic arteries?
fast moving luminal blood
What to metarterioles lack?
tunica media
What luminal layers are thicker in arteriovenous anastomosis?
tunica media and tunica adventitia
What are the vessels that metarterioles are associted with?
thoroughfare channels
What are found within all capillary beds?
metarterioles
T/F: Arteriovenous anastomosis redirect much blood away from capillary beds?
True
Which enables the functioning of erectile tissues?
arteriovenous anastomosis
Which cell type, with reparative potential, is found exterior to capillaries and venules?
pericyctes
Which cell type is found regularly with capillaries and venules only?
pericytes
Name the structure that will supply the cells in the tunica adventitia with the materials needed to survive?
vasa vasorum
Do lymphatic capillaries have pericytes?
no
Do lymphatic capillary endothelial cells join together using tight junction?
no
Do lymphatic capillary endothelial cells have attached anchoring filaments?
yes
Do medium and large lymphatic vessels have 3 major luminal wall layers?
yes
Renal corpuscles are found within which major kidney region?
cortex