Term
| Elastic Arteries(Conducting AA) |
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Definition
Arteries near heart
Large Lumen (low-resistance to Blood Flow)
contain the most ELASTIN of any bl. vess. |
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Term
| Muscular Arteries(distributing AA) |
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Definition
Most NAMED arteries.
Largest percentage of Tunica Media
MORE smooth muscle,but LESS elastin.
MORE VASOCONSTRICTION |
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Term
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Definition
Large Arterioles(have 3 layers)
Tunica Media (mostly smooth muscle)
SMALLER arterioles - mostly SINGLE smooth muscle cell layer ( spiraling around endothelium) |
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Term
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Definition
SMALLEST blood vessel.
allow exchange of fluids/nutients between :(Tissue fluid & Blood in capill.)
Composition: thin Tunica Intima |
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Definition
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Term
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Definition
smooth muscle-like cells (spider-shaped)
control Capillary PERMEABILITY |
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Term
| Most tissues are rich in Capillaries except? |
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Definition
Tendons/ligaments - poorly vascularized
Cartilage & Epithelia - avascular(diffuse from CT)
Cornea & lens - avascular (come from aqueous humor) |
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Term
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Definition
Continous-fluids/sm size solutes go thru capillary wall
Fenstrated - leak more then continuous
Sinusoidal- leakiest |
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Term
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Definition
joined LATERALLY by: TIGHT JUNCTIONS
perform Pinocytosis
has intercellular clefts(gaps in capillary endothelium layer) |
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Term
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Definition
Gaps in capillary endothelium layers
passage for fluids and small solutes |
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Term
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Definition
"Cellular drinking"
Vesicles carry FLUID within Endothelial cell to the other side. |
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Term
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Definition
| Continous Cap. in brain are unique and tight junctions allow no gaps (NO intercellular clefts) |
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Term
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Definition
-Oval pores "windows".
covered by thin DIAPHRAGM |
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Term
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Definition
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Term
| Important locations of Fenestrated Capillaries |
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Definition
1)sm. Intestines-pick up absorbed digested nutrients
2)Endocrine tissues - pick up hormones
3)KIDNEY- allows rapid FILTRATION of liquid & wastes out of the passing blood(Kidney Glomerulus) |
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Term
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Definition
ball of capillaries
is a capillary tuft that performs the first step in filtering blood to form urine.
is a capillary tuft that performs the first step in filtering blood to form urine. |
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Term
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Definition
LEAKIEST cappilary
LUMEN torturous
blood flow sluggish
larger Intercellular clefts(less gap junctions)
Fenstrations usally present |
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Term
| Important locations of SINUSOIDAL CAPPILLARIES. |
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Definition
LIVER- have kupffer cells,large hepatic macrophages
SPLEEN- Phagocytes(outside the sinusoid endothelium |
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Term
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Definition
catch & destroy passing bacteria****
large hepatic Macrophages |
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Term
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Definition
| (smooth muscle)regulates blood flow into capillaries,around beginning of capillaries at Metarteriole. |
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Term
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Definition
| short vessel that links arterioles and capillaries. Instead of a continuous tunica media, they have individual muscle cells placed a short distance apart, each forming a precapillary sphincter that encircles the entrance to one capillary. |
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Definition
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Definition
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Term
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Definition
| blood flow arrangement BETWEEN 1 Terminal Arteriole & its related POSTCAPILLARY VENULE through 1 CAPILLARY BED. |
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Term
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Definition
| Metarteriole connects to THOROUGHFARE CHANNEL |
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Term
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Definition
| seems like combination of Arteriole & capillary |
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Term
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Definition
| seems like comb of Venule & Capillary |
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Term
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Definition
| consist of 10-100 TRUE CAPILLARIES comming off metarteriole & going to the Thoroughfare channel. |
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Term
| Each _______ has a Smooth Muscle Sphincter where it exits the Metaarteriole |
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Definition
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Term
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Definition
Terminal Arteriole
Metarteriole
Matarteriole , precapillary spincter
true capillaries , thoroughfare channel
Post capillary venule |
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Term
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Definition
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Term
Venous system returns blood to the _____
from the ________ _________. |
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Definition
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Term
| smallest vein like vessel |
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Definition
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Term
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Definition
smallest venules,
ENTIRELY ENDOTHELIUM
have PERICYTES- smooth muscle-like cells
very porous |
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Term
at sites of inflammation , wbc can get out there from inside the _________ ________:
WBC adhere to the **blank above*** then migrate into the infalmmed tissues |
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Definition
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Term
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Definition
3 distinct tunicas
cmp to AA thinner walls & lg lumens |
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Term
| THICKEST LAYER OF VEIN WALL |
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Definition
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Term
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Definition
2 vena cavea
superior, inferior vena cavea
bring systemic blood to the right atrium. |
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Term
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Definition
2 vena cavea
superior, inferior vena cavea
bring systemic blood to the right atrium. |
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Term
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Definition
blood reservoirs
< 65% total blood supply is in the VV at one time
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Term
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Definition
| tunica intima FOLDS - keep bllod goiong only TOWARD the heart |
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Term
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Definition
have leaky incomptent valves
causes:heredity,prolong standing in 1 pos. , obesity & pregnancy put pressure on groin VV |
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Term
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Definition
| dilated VV in the anal region (varicosities) |
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Term
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Definition
| flattened VV in w/ very thin walls(only endothelium) |
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Term
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Definition
| gets blood from myocardium |
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Term
| Dural venous sinuses of brain |
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Definition
| recieve cerebrospinal fluid & bllod from brain and dura matter |
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Term
| Vascular Anastomes(collateral channels) |
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Definition
| INTERCONNECTIONS of blood vessels |
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Term
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Definition
more than 1 source of arterial bllod for a region(interconnected)
***still blood supply even when 1 source is blocked*******
exmple:joints,abdom organs,brain,heart |
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Term
| Arteriovenous anastomoses |
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Definition
| arterioles & venules are interconnected |
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Term
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Definition
interconnected VV, blockage of one vessel does not stop the venous bl. flow.
MOST COMMON. |
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Term
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Definition
| AA become stiffer & thicker |
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Term
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Definition
most common type of Arteriosclerosis.
could cause temporary spasms in bl vessel
narrow lumen , passing blood clot (thrombus) could get stuck and block blood flow. |
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Term
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Definition
| small thickend patches which develop on bl. vessel walls & start crowding into part of the Artery's Lumen. |
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Term
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Definition
| artery has a ballon buldge out at a weak spot |
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Term
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Definition
| pain due to lack of o2 ( cardiac Ischemia) |
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Term
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Definition
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Term
________ feeds outer regions of large bl. vessels
(network of tiny bl. vessels within the larger blood vessels Tunica Externa |
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Definition
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Term
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Definition
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Term
| _______ type of capillaries for brain barrier |
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Definition
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Term
| _______ is type of capillaries found liver/spleen |
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Definition
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Term
___________ type of capillary is found
in the KIDNEY,sm Intestines,endocrine |
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Definition
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Term
| blood flow into capillaries are regulated by ________ _________. |
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Definition
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Term
| _________ ________ ________ of brain recieves csf & blood from the brain |
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Definition
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Term
| Vein valve are similar to what kind of heart valves |
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Definition
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Term
| collateral channels , interconnections of blood vessels |
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Definition
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Term
| ________ is the first visible sign of Atherosclerosis (accumulation of Foam Cells at Injury Site on Endothelium) |
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Definition
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Term
| ________ the Atherosclerotic Plaques become unstable - lead to formation of Blood Clot ( Thrombus) |
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Definition
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Term
| At least ______ of all MIs are caused by Plaques that are too small to show up even on Arteriograms!!! |
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Definition
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Term
| At least 1/3 of all MIs are caused by Plaques that are too small to show up even on ____________!!! |
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Definition
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Term
| __________ which carry Cholesterol in the blood accummulate at the site & Oxidize!! |
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Definition
| LDLs(Low-Density Lipoproteins) |
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Term
| Low-Density Lipoproteins which carry ___________ in the blood accummulate at the site & __________!! |
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Definition
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Term
| The Macrophages start consuming the oxidized Lipids & some become so overfilled that they become : ____________ |
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Definition
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Term
| The ________ start consuming the oxidized Lipids & some become so overfilled that they become : Foam Cells |
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Definition
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Term
| _________ restores Coronary Circulation using Leg VV or sm Thoracic AA as detour around site |
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Definition
CABG
Coronary Artery bypass w/ grafting |
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Term
| __________ ballon catheter up the leg smashes plaque against bl vessel wall enlarging Lumen |
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Definition
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Term
| _________ build up of plaque returns |
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Definition
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Term
___________ - the "good" Lipoprotein!!
-removes Cholesterol from blood vessel walls & takes to liver!! |
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Definition
| HDL ( High-Density Lipoprotein ) |
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Term
| ________ is the legs of circle of willis |
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Definition
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Term
| ____________ is the body of circle of willis |
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Definition
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Term
| ___________ is the arms of the circle of willis |
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Definition
| Posterior Cerebral Artery |
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Term
| __________ antenna of the circle of willis |
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Definition
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Term
| ___________ connects the antenna of the circle of willis |
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Definition
| Anterior Communicating Artery |
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Term
| __________ is the cut artery to form the eyes of the circle of willis |
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Definition
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Term
| __________ is "cellular drinking" |
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Definition
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Term
| ______________ channel from : Pulmonary Trunk to Aorta. |
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Definition
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Term
| ("oval door") hole between Atria |
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Definition
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