Vasculature II Flashcards
post-cap venules have surrounding ______. Blood flow is ______ and leukocytes tend to primarily _______ through vessel walls at these sites.
- pericytes
- slow
- dipedese
what region is responsive to vasoreg substances and therefore more sensitive to controleld permability
post-cap venules (responsive to serotonin and histamine)
large veins contain a ______ and a media of _______ and _____ with veery small amounts of _____. The tunica adventitia is ______, and larger veins contain _______.
- thin intima of endothelial cells
- interlayered SM
- collagen fibers
- elastin fibers
- thick
- vasa vasorum
circulation in veins is by _______ and is aided by _______
- hydrostatic pressure
- contraction of SM and the compression of surrounding skeletal muscle
the pulm arteries function under _______ pressure
lower
lymphatics flow _______
only one way (from tissues to empty into the blood)
end arteries supply ______. This is found in the ______
- a section of tissue that cannot have an alternate arterial supply
- arterial supply to sections of the kidney and segments of the lung
portal systems are found
in the hypothalamic-anterior pituitary portal system and the hepatic portal system
pampninform plexus is ________ and is found ________
a countercurrent arrangement between an artery and venous network
-the spermatic cord for optimal heat exchange
