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blood vessels

blood vessels and circulation

QuestionAnswer
What are the 3 layers of the arteries and veins Tunica extruna, tunica media, tunica intima
what does the tunica extruna look like in a artery thick with collagen and elastic fibers
what does the tunica extruna look like in a VEIN thick with collagen and elastic, smooth muscles cells
what does the tunica media look like in a artery thick dominated by smooth musccle cell sand elastic fibers with exturnal elastic membrane
what does the tunica media look like in a vein thin, dominated by smooth muscle cells and collagen fibers
what does the tunica intima look like in a artery endothelium that is rippled due to vessel constriction and has internal elastic membrane
what does the tunica intima look like in a vein often smooth
what is the tunica externa is made of what connective tissue
what is the tunica media is made of smooth muscle
what is the tunica intima is made of endothelium
muscular arteries and arteriols regulate flow how sympathetic-smooth muscle to increase by vasoconstriction (narrow) vasodilation (relaxation)
arteriols regulate flow of blood into what capillaries
what holds 64% of total blood volume systemic venules and veins
cardiac output CO=MABP divded by SVR
SVR stands for Systemin vascular resistance
what is the natual damping of blood flow SVR Systemin vascular resistance
what factors cause the SVR to rise small blood vessel radius higher blood viscosity longer vessel length
what happens when SVR (Systemin vascular resistance) BP
if co goes up what else does blood flow, vasodilation
what is the mean arterial pressure formula diastolic pressure + pulse pressure/ 3
what is the mean arterial pressure diffenece of blood as it leaves L ventrical entering R atrium
if MABP goes up what happens to blood flow goes up
what is SBP Systolic Blood pressure contraction of ventrical
what is DBP Diasolic blood pressure relaxiing of ventrical
in blood pressure reading 120/90 what is 12o SBP Systolic Blood pressure contraction of ventrical
in blood pressure reading 120/90 what is 90 DBP Diasolic blood pressure relaxiing of ventrical
where is the slowest blood velocity capillaries because of the incomplet casing with holes to allow exchange material
where is fastest highest blood velcity in arteries and veins which has lower cross-sectional area
where is the BP highest arota, arteries then drops as moves thur capillaries
vasocontriction do to smooth muscle contration does what to SVR and Blood flow SVR ^ (Systemin vascular resistance) Blood flow down
where is the slowest blood velocity in and why capillaries because of their total cross sectional area is large
where is the fastest blood velocity in and why arteries and veins because lower cross sectional area
what is the cross sectional area the lowest in what type of artery elastic
where is BP the highest aorta and arteries then drops as moves though capillaries
what is anaplexic shock not enough blood flowing
what venous return is what volume of blood returning to the heart from the systemic circulation
what do kidneys do what for blood regulation reabsorb Na+ and water
when reabsorption goes up what else goes up blood volume, venouse return CO, SV
if you get rid of Na+ and h2o what happens to blood volume, venouse return, CO, SV goes down
what is venous tone degree of smooth muscle contractin
when venous tone goes up what happens venoconstriction, venous storage drops, moves more blood thru vein and ups venous return to make CO go up
what happens when venous tone goes down venodilation which ups venous storage and venouse return drops with CO
what prevents back flow of blood in veins valves in walls
staying in on position for to long do what for CO go down cause skeletal muscles are not pumping veins
what compesses and decompresses veins in thoracic and abdominal cavities diaphragm
what is diffusion net movement of ions or molecules from an area of high concentration to an area of low consentration
what is filtration movement of fluid from blood to interstitial fluid
what are the 3 process of capillary exchange diffusion, filtration, reabsorption
what drives filtration in capillary exchange hydrostatic pressure
what is hydrostactic pressure governs what will be pushed thru in filtration in capillary exchange which pushes water from area of high pressure to area of low pressure
what is interstitial fluid fluid that surrounds cells and blood vessels
what is reabsorption movement of fluid from interstitial fluid to blood
how does reabsorbtion happen osmosis which is movement of water across semipermeable membrane
what is osmosis movement of water across semipermeable membrane
what drives reabsorption osmotic pressure which is BCOP (blood colloid osotic pressure)
what is BCOP blood colloid osotic pressure (osmotic pressure that makes reabsorbtion)
what is CHP Capillary hydrostactic pressure (pushes water and solutes out of capillaries into insterstitial fluid
what is NFP Net filltration pressure CHP (Capillaryy hydrostatic pressure)minus IHP (Iterstitial fluid hydrostatic pressure)
if CHP (Capillary hydrostactic pressure) > BCOP (blood colloid osotic pressure) what happenns and where filtration at the arterlole fluid is forced out of capillary by hydrostactic pressure
if BCOP (blood colloid osotic pressure)> CHP(Capillary hydrostactic pressure)what happens reabsorbtion at the venule fluid from interstitial fluid to blood by osmotic pressre
what is NCP net colloid presure-pulls water and solutes into capillaries from interstitialfluid
how do you get NCP (net colloid presure) BCOP (blood colloid osmotic pressure) minus ICOP (interstital fluid colloid osmotic pressure)
what decrease blood colloid osmotic pressure damage to kidneys means loss of blood plasma proteins
what changes as blood passes along capillaries rates of filtration and reabsorption
what is starling's Law of the Capillaries volume of fluid reabsorbed atthe venous end of capillary is nearly equal to volume of fluid filtered out at arterial end
how do you get NFP (net filtration pressure( NHP (CHP-IHP) - NCOP (BCOP-ICOP) (filtration) (reabsorbtion)
how does fluid and protiens that escape from blood to interstital fluid get returned to blood lymphatic system
blockage of lymphatic channels cause what IHP ( interstitial fluid hydrostactic fluid) to increase
what is IHP interstitial fluid hydrostactic fluid
what is edema fluid build up in peripheral tissues
what causes edema CHP up or BCOP down amount filtarted into interstitial fluid and not enough put back into blood
what is autoregulation for the cardiovascular system immeditate localized homeostatic adjustments
the major regulater of regional blood flow in the brain is what autoregulation
if brain doesn't correct with autoregulation what kicks in next neural and endocrine mechanisms
the cardiovascular center is located in what medulla
medulla helps regulate what HR, SV, BP, blood flow to specific tissues
in cardiovascular center what do the baroreceptors do monitor blood pressure
in the cardiovascular center what do chemorecepters do monitor blood acidity
where are baroreceptors located walls of aorta and carotid arteries neck
if baroreceptors detect low BP what do they do to change it sympatheticly stimulate for CO, SV to go up,
if baroreceptors detect low BP what do they do to change it parasympathicly inhibit stimulation so CO, SV to go up
if baroreceptors detect low BP what do they do to change it from vasomoter region control peripheral resistance by changing diameter of vessels
how baroreceptors change low BP from vasomoter region for arterioles contract smooth muscle up vasomoter tone to up vascular resistance to up BP
how baroreceptors change low BP from vasomoter region for veins contract smooth muscle to move blood to heart to up BP
where are chemoreceptors located and do what aortic and caroted bodies blood acidity, CO2, O2 levels
what does ADH do for BP stimulates conservation of water to up BP
what does a ADH deficiency do lower venous return, low BP, low SV more water absorbtion
what is ADH antidiuretic hormone or vasopressin
when does ADH get released from pituitary gland in response to decreased blood volume
What is ANP atrial natriuretic peptide from cells to right atrium
What does ANP do ups Na+ excretion in urine-> water loss-> low blood volume to low BP
what does ANgiotensin II do Relased from kidneys cause of low renal BP causing Na+ retension so up ADH production to up BP
what are ACE inhibitors antihypertension drugs to decrease angiotension II formation
what is in kidneys that is not active hormone Angiotension I
what is anaphylactic shock release of histomine that is a potent vasodilater to low BP
what does epinephrine stimulate vasoconstrition to up BP
basilar artery if formed by what 2 arteries right and left vertebral artiers
what creates the circle of willis or cerebral artieral circle basilar and internal carotied
common caroted turns into what to arteries left and right vertebral
why is there a circle in brain so blood keeps flowing to keep to brain
what does the asending aorta turn into celiac trunk
what does the celiac trunk supply spleen, liver, stomach
what does celiac turn into superior and inferior mesentric
what is the primary artries of the pelvis internal iliac arteries
what supplies blood to colon, rectum, sigmoid inferior mesenteric
what does the interal jugular vein recevie blood from sigmoid sinuses
blood from the vertebral veins flows into brachiocephalic vein
blood flows directly into superior vena cava brachiocephalic veins
the cubital median veins connect what cephalic and basilic veins
great saphenous vein flows into femoral vein
saphenous vein can be
of the 3 blood vessel tunics which has single layer of endothelium w/scant connective tissue tunica interna
of the 3 blood vessel tunics which has a bulky middle coat, w/smooth muscle and elastin tunica media
of the 3 blood vessel tunics which has smooth surface to decrease resistance to blood flow tunica interna
of the 3 blood vessel tunics which has the only tunica of capillaries tunica interna
of the 3 blood vessel tunics which is called adventitia tunica externa
of the 3 blood vessel tunics which plays an active role in blood pressure refulation tunica media
of the 3 blood vessel tunics which has supporting and protective coat tunica externa
of the 3 blood vessel tunics which forms venous valves tunica interna
what blood vessels transport blood away from the heart arteries
what blood vessels are the largest arteries w/low resistance elastic
what blood vessels control blood flow into individual capillary beds arterioles
what blood vessels are where lumen are the size of red blood cells capillaries
what blood vessels are the capillary type with uninterrupted lining continuous
what blood vessels of the capillary type have numerous pores and gap junctions fenstrated
what blood vessels of capillary type have intercellular clefts and irregular lumen sinusoids
what blood vessels are formed when capillaries unite arteries
what blood vessels veins with only a tunica intima and supported by surrounding tissues venous sinuses
what is the importance of arterial anastomoses provide alternate pathway for blood to reach organs
where are venous blood reservoirs most abundent skin and visceral organs
why are veins called blood reservoirs store 65% of blood
expansion and recoil of an artery during heart activity concerns blood pressure or pulse pulse
pressure exerted by blood against the blood vessel walls concerns blood pressure or pulse blood pressure
event primarily responsible for peripheral resistance concerns blood pressure or pulse constriction of arteriole
blood pressure during heart contraction concerns blood pressure or pulse systolic blood pressure
blood pressure during heart relaxation concerns blood pressure or pulse diastolic blood pressure
site where blood pressure determinations are normally made over arteries
points where surface where pulse may be felt pressure points, over arteries
sounds heard over blood vessel when the vessel is partially compressed sounds of Korotkoff
increased diameter of arteriols increase or decrease blood pressure decrease
increased blood viscosity increase or decrease blood pressure increase
increased cardiac output increase or decrease blood pressure increase
increased pulse rate increase or decrease blood pressure increase
anxiety, fear increase or decrease blood pressure increase
increased urine output increase or decrease blood pressure decrease
sudden change in postition from reclining to standing increase or decrease blood pressure decrease
physical exercise increase or decrease blood pressure increase
physical training increase or decrease blood pressure decrese
alcohol increase or decrease blood pressure decrease
hemorrhage increase or decrease blood pressure decrease
nicotine increase or decrease blood pressure increase
renin released by kidneys cause what in blood pressure increase
2 organs which vasoconstrition rarely occurs where brain, heart
nervous system controls blood pressure and distribution by altering diameters of what arterioles
where is vasomotor center for blood pressure control medulla
ANP produced by atria causes what in blood pressure and volume reduction
the hormone vasopressin causes what vasoconstricting
blood flows the slowest in capillaries
local adjustment of blood flow to given tissue is what autoregulation
what substances move thru fluid filled capillary clefts water, water soluble sugars, amino acids
what substances move thru endothelial cell plasma membrane gasses, fat solubles
normal conditions the area does hydrostatic pressure predominate metarteriole
what circulation system where blood flow increases when body temp rises skin
what circulation system where major autoregulatory stimulus is drop in pH cerebral
what circulation system where arteries have thin walls and lg. lumens pulmonary
what circulation system where vessels dont constrict but compress during systole coronary
what circulation system where vasodilation by high oxygen pulmonary
what circulation system where capillary flow is sluggish, phagocytes present heptic
what circulation system where additional oxygen is supplied only by increases blood flow coronary
what circulation system where has lg. atypical capillaries w/fenestrations heptic
what circulation system where venouse blood empties into dural sinuses other then veins cercbral
what circulation system where arteriols have receptors for both acetlcholine and epinephrine skeletaal muscle
a pulse is palpable where muscular arteries
kupffer cells are macrophages in the liver
fenestrated capillaries are wher kidney, intestinal mucosa
what 2 vessels are conducting arteries brachiocephalic and common iliac arteries
the most important factor in blood pressure regulation is short term changes in blood vessel diameter
vasomotor fibers that secrete acetylcholine are found in skeletal muscle
chemical factors that increase blood pressure endothelin and ADH
what are the 2 arteries formed by division of brachiocephalic artery common carotid, superior mesenteric
first branches off ascending aortic are coronary
2 paired arteries that serve the brain internal carotid, vertebral
arterial of the dorsum of foot dorsalis pedis
what artery supplies the diaphragm phrenic
what artery supplies last half of lg. intestine inferior mesenteric
splits to form the radial and ulnar arteries brachial
what artery supplies pelvis internal iliac
auscultated to determine blood pressure in arm brachial
major artery that serves the arm brachial
what artery supplies sm. intestine and part of lg. superior mesenteric
terminal branches of dorsal, descending aorta common iliac
what artery supplies external tissues of skull external carotid
what 3 arteries supply the legs anterior and posterior tibial, fibular
artery that gives pulse at wrist radial
whats the name of anastomosis that allows communication of front and back blood supplies of brain circle of willis
what 2 arteries arise from internal carotid anterior and posterior cerebral
posterior cerebral arteries arise from what basilar
deep veins that drain forearm radial, ulnar
receives blood from arm via axillary vein subclavian
drains venous blood from myocardium of heart into coronary sinus cephalic
drains kidney renal
drains dural sinuses of brain internal jugular
join to become superior vena cava brachiocephalic(s)
drain leg and foot anterior and posterior tibial
carries blood from digestive organs to liver for processing hepatic portal
drains ovaries and testes gonadal
drains thorax inferior vena cava
drains liver hepatic
3 veins that form hepatic portal vein gastric, inferior and superior mesenteric
longest superficial vein in body great saphenous
formed by union of external and internal iliac veins common iliac
deep vein of thigh femoral
Created by: mbruckman03