W6 Peripheral Vascular & Lymphatics Questions and Answers with Complete Solutions UPDATED!!!.

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W6: Peripheral Vascular & Lymphatics Questions and
Answers with Complete Solutions UPDATED!!!



3 layers of arteries - ANSWER intima
media
adventitia


separated by elastic membrane (internal & external)


arterial intima - ANSWER continuous lining of endothelial cells


synthesizes regulators of thrombosis, prothrombic molecules,
vasoconstrictors, vasodilators


regulates immune & inflammatory rxns


arterial media - ANSWER middle layer of smooth muscle cells
dilates & constricts to accommodate blood flow
perfused by vasa vasorum

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arterial adventitia - ANSWER outer layer of connective tissue
contains nerve fibers & vasa vasorum


Thrombosis regulators synthesized by arterial intima - ANSWER
prostacyclin
plasminogen activator
heparin like molecules


prothrombic molecules synthesized by arterial intima - ANSWER
Von Willebrand factor
plasminogen activator inhibitor


vasoconstrictors produced by arterial intima - ANSWER
endothelian
ACE


vasodilators produced by arterial intima - ANSWER nitric oxide
prostacyclin

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palpable arteries in the arms - ANSWER brachial - elbow, medial
to bicep tendon
radial- lateral flexor surface
ulnar- medial flexor surface --- may be obscured by overlying
tissue


palpable arteries in the legs - ANSWER femoral- below inguinal
ligament b/w anterior superior iliac spine & pubic symphysis.
popliteal
DP- lateral to extensor tendon of 1st toe
PT- medial to medial malleolus


atheroma - ANSWER lipid filled foam cells in arteries
becomes fatty streak


complex atheroma - ANSWER asymmetric plaques that narrow
the arterial lumen
reduce blood flow & weaken media