blood rich in nutrients and oxygen from the heart out to the various organs and tissue bed
deoxygenated blood with waste materials back towards the heart.
arteries and veins have three layers called the
venules are the
smallest component of the venous system, most connective tissue
valves covered by endothelial cells.
capillaries are the
smallest vessel in the body. nutrient exchange
a slight dilation involving variable portions of the distal common and proximal internal carotid arteries. this is where the baroreceptors assisting in reflex blood pressure control are located
in the event of a brachiocephalic or subclavian artery occlusion, collateral flow can enter the distal subclavian artery via the vertebral artery.
increase in width of the spectral waveform. filling in
the quality of being tortuous, winding, turning, twisting
a small tear in the wall of a blood vessel resulting in a portion of the intima and part of the media protruding into the lumen of the vessel
North American symptomatic carotid endarterectomy trial a criteria for identifying a 70% or greater internal carotid stenosis. measuring stenosis
the distal vertebral arteries form the
the basilar artery supplies
blood to the posterior hemispheres of the brain via the posterior cerebral arteries
the circle of willis lies at
the base of the brain and distributes flow to all hemispheres. the main perfusion to the lateral hemispheres is via the middle cerebral arteries (MCA). these arise from the terminus of the ICA (TICA)
the small posterior communicating arteries PCoA arise from
the PCAs and connect with the proximal MCAs or distal ICAs
the anterior communicating arteries ACoA connect the
left and right ACAs
the thyroid should be located at the
right of the CCA on the transverse when scanning the patient's right side.