Cardiovascular System - Fung Flashcards
(270 cards)
what is the normal weight of a female heart?
250 - 300 g
What is the normal weight of a male heart?
300-350 g
What is the normal wall thickness of the right wall?
0.3-0.5 cm
what is the normal thickness of the left ventricle?
1.3-1.5 cm
what cell type metabolizes hormones?
endothelial
what cell type proliferates when stimulated?
smooth muscle
what cell type regulates inflamm?
endothelial cells
what cell type regulates cell growth?
endo
what part of the vascular structure contains elastin, collagen, and glycosaminoglycans?
extracellular matrix
what cell type modulates vascular resistance?
endotheilial cells
what cell type mantains non-thrombogenic blood-tissue interface?
endothelial cells
from lumen outward, what are the layers of a muscular artery?
internal elastic lamina
tunica media
external elastic lamina
tunica adventitia
do arteries or veins contain valves?
veins
what are the six mechanisms of cardiac dysfunction?
Pump failure Obstruction regurgitation shunt conduction rupture of a major vessel
endothelial loss or dysfunction stimulates (blank) cell growth and ECM matrix thickening
smooth muscle cell
ECM thickening leads to thickening of which layer of the vessel?
intima
what are the complications of long term HTN?
atherosclerosis HTN heart disease multi-infarct dementia aortic dissection renal failure
increased nitric oxide, prostacyclin, kinins, and ANP will lead to….
decreased peripheral resistance aka dilation aka decreased blood pressure
decreased levels of neural factors (b-adrenergic) will lead to….
decreased peripheral resistance aka dilation aka decreased blood pressure
Decreases in blood volume, heart rate, or contractility will have what affect on BP?
decreased
increased levels of what five compounds will lead to increased peripheral resistance and therefore blood pressure?
ANG II catecholemines thromboxane endothelin a-adrenergic neural factors
What affect does ANP have on the kidney?
excretes Na and Water leading to decreased blood volume and a drop in BP
Low volume or low resistance measured by the kidney causes it to release what to increase blood pressure?
Renin
Renin converts what enzyme from the liver?
angiotensin to angiotensin 1