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PrincipleMod 7

Questions from Module 7 of the Principles componant

QuestionAnswer
Describe ways to reduce aliasing Reduce transmitted frequency, increase velocity, lower the baseline
Doppler shift allows sonographers to detect Patency of vessels, stenosis or occlusion of vessels, increased velocity in arteries, cardiac valve abnormalities, shunt lesions
Identify three layers of a vessel from deep to superficial tunica intima, tunica media, tunica adventitia
Differentiate between the internal and external carotid arteries ICA feeds the brain, circle of willis and eyes (low resist.),has a large diameter, lies post. and lat. and has no extracranial brs. ECA feeds face and scalp (high resist.), has small diameter, lies ant. and med. and has extracranial brs.
Blood flow through veins is influenced by respiration, calf muscle pump, presence of valves
Created by: sbeard1