CardioVas Sys

magovate's version from 2017-05-03 22:45

Section 1

Question Answer
Layers of blood vessels Tunics
Found in the middle layer of a blood vesselMuscle and Elastic
High PressureArtery
High oxygen content in systemic circiulationArtery
Thick wallsArtery
Blood flow away from heartArtery
Bright red color of bloodArtery
Low pressureVein
Low oxygen content in systemic circiulationVein
Thin WallsVein
Blood flow to the heartVein
Dark maroon color of bloodVein
Part of thorax that contains the heartMediastinum
Receiving chambers of heartAtria
Discharging chambers in heartVentricles
Main pacemaker of heartSinoatrial node
Part of the conduction system found in the ventricular wallsPurkinje fibers
Can view depolarization and repolarization of the heartECG
Rapid uncoordinated shuddering of heartFibnrillation
Ventricular relaxationDiastole
Ventricular contractionSystole
Heart rate times stroke volume equalsCardiac output
Heart rate can be what by the PNS, cold, or low blood calciumDecreased
Blood pressure is measured whereLarge arteries
Blood pressure receptorsBaroreceptors
Persistent and pathologic high blood pressureHypertension
Build up of plaque within walls of blood vesselsAtherosclerosis
Amount of blood ejected from the heart every minuteCardiac Output
When the CO can’t meet the demands of peripheral tissuesHeart failure
Volume of blood moving past a point over a given timeBlood Flow
Directly proportional to blood pressure, and inversely proportional to peripheral resistanceBlood Flow
Exchange of molecules between blood and tissues/interstitial fluid occurs due to filtration, diffusion, and osmosisCapillary Exchange
In interstitial fluid, molecules diffuse into or out of cellsDiffusion
At venous end of capillary, low BP means osmotic pressure dominates – Plasma proteins inside capillary draw water and solutes back into circulationOsmosis
Plasma and small solutes squeezed out into interstitial fluidFiltration
Is an important short-term regulator of blood pressureBaroreceptor reflex
Hormone that will influence blood pressureAntidiuretic
Hormone released by the heart when the atria are stretching too muchAtrial natriuretic peptide
Found in the carotid body and aortic arch, causes vasodilation if pressure is high. and causes vasoconstriction if pressure is lowBaroreceptor reflex

Section 2

Question Answer
Semilunar Valves Closed, AV Valves Closed, Atria Relaxed, Ventricles ContractingIsovol. Contraction
Semilunar Valves Open, AV Valves Closed, Atria Relaxed, Ventricles ContractingEjection
Semilunar Valves Closed, AV Valves Closed, Atria Relaxed, Ventricles RelaxedIsovol. Relaxation
Semilunar Valves Closed, AV Valves Open, Atria Relaxed, Ventricles RelaxedVent. Fill
Semilunar Valves Closed, AV Valves Open, Atria Contracting, Ventricles RelaxedAtrial Contraction
Sinoatrial Node1
Internodal pathways2
AV Node3
AV Bundle4
Purkinje fibers5