Vessels,Valves+Tissues Flashcards
thrombosis
blockade of a vessel due to a blood clot formed in the vessel
choroid plexus
glomeruli of blood vessels protruding into the brain ventricles and covered by glial cells whose function is the secretion of the liquor (cerebrospinal fluid, CSF)
embolism
blockade of a vessel by an air bubble or blood clot originating at a different part of the circulatory system
arteriole and resistance vessel
muscular vessel connecting arteries and capillaries
basal myogenic tone
in some parts of the body, vessels with a muscular wall (mostly arterioles) contract in response to an increase in blood pressure to prevent an unnecessary increase in blood flow
arteriovenous anastomosis
short vessels found especially in the skin, connecting arterioles and venules
metarteriole
vessel connecting arterioles and venules from which true capillaries originate
venule
small vessel connecting the capillaries to veins
capacitance vessels
alternate name for veins because of their large compliance
vena cava
empty vein; large veins returning from the body to the right atrium were named vena cavae, because they were found empty in hanged persons dissected during medieval times
mitral valve
bicuspid valve between the left atrium and ventricle
semilunar valves
valves at the orifice of the aorta and pulmonary artery
tricuspid valve
valve between the right atrium and ventricle
annulus fibrous
sheet of connective tissue separating the atria from ventricles and providing anchoring points for the valves
atrioventricular node
specialized conduction tissue in the heart at the border of the right atrium and ventricle
