Chapter 5-2

tigrebright's version from 2015-09-21 00:58

Section 1

Question Answer
cardiovascularpertaining to the heart and blood vessels
pericardiumencloses the heart
parietal pericardiumsurrounds and protects the heart
pericardial fluidacts as a lubricant to prevents friction as the heart beats
visceral pericardiuminner layer of the pericardium
epicardiumexternal layer of the heart
myocardiummiddle and thickest of the heart's three layers
endocardiuminner lining of the heart
coronary arteriessupply oxygen-rich blood to the heart

Section 2

Question Answer
artriatwo upper chambers
ventriclestwo lower chambers
tricuspid valvebetween right atrium and right ventricle
pulmonary valvebetween right ventricle and pulmonary artery
mitral valvebetween left atrium and left ventricle
aortic semilunar v alvebetween left ventricle and aorta
pulmonary circulationblood flow between heart and lungs only
pulmonary arteriescarry dioxy blood out of right ventricle and into lungs
pulmonary veinscarry oxy blood from lungs to left atrium
systemic circulationblood flow to all parts of body except heart and lungs

Section 3

Question Answer
heartbeatability to pump blood effectively throughout the body
sinoatrial nodenatural pacemaker
atrioventricular nodetransmits electrical impulses to bundle of HIS
bundle of HISSgroup of fibers carry electrical impulses to l & r ventricles and purkinje fibers
purkinje fibersrelay electrical impulses to the cells of the ventricles;causes them to contract
sinus rhythmnormal heart beat
p wavecontraction of the atria
qrs complexcontraction of ventricles, relaxation of atria
t waverelaxation of ventricles

Section 4

Question Answer
arterieslarge blood vessels carry blood away from the heart
aortalargest blood vessel in the body
carotid arteriesmajor arteries that carry blood to the head
arteriolessmaller, thinner branches of arteries
capillariessmallest blood vessels in the body
veinsreturn oxygen-poor blood to the heart
venulessmallest veins
venae cavaetwo largest veins in the body
pulserhythmic pressure against the walls of an artery
systolic pressurehighest pressure; when ventricles contract
diastolic pressurelowest pressure; when ventricles relax
serumplasma fluid after blood cells and clotting protein removed
fibronogen; prothrombinclotting proteins

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