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66 Cards in this Set

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  • Back
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Front (Term)


heart

Back (Definition)


situated between the two lungs in the thoracic cavity


Front (Term)


pericardium

Back (Definition)


membrane that surrounds and protects the heart; holds it in place

Front (Term)


fibrous pericardium

Back (Definition)


tough, in elastic, dense irregular ct; prevents over stretching of heart, provides protection, anchors the heart in place.

serius pericardium

thinner more delicate membrane; forms double layer around heart.

serius pericardium

thinner more delicate membrane; forms double layer around heart.

parietal layer

(of serous pericardium) fused to fibrous pericardium and the inner visceral layer, also called epicardium.

pericardial fluid

reduces friction between the membranes as the heart moves

pericardial fluid

reduces friction between the membranes as the heart moves

pericardial cavity

space that contains the pericardial fluid.

pericardial fluid

reduces friction between the membranes as the heart moves

pericardial cavity

space that contains the pericardial fluid.

epicardium

thin transparent outer layer of wall; composed of mesothelium and ct.

pericardial fluid

reduces friction between the membranes as the heart moves

pericardial cavity

space that contains the pericardial fluid.

epicardium

thin transparent outer layer of wall; composed of mesothelium and ct.

myocardium

consists of cardiac muscle tissue; structure and function; pumping action of the heart.

involuntary, striated, branched

intercalated discs

thickenings of the sarcolemma

intercalated discs

thickenings of the sarcolemma

gap junctions

allow proteins to conduct from one cardia muscle fiber to the next

intercalated discs

thickenings of the sarcolemma

gap junctions

allow proteins to conduct from one cardia muscle fiber to the next

endocardium

thin layer of simple squamous epithelium that lines the inside of the myocardium and covers the valves of the heart and the tendons attached to the valves

Atria

two upper chambers

Atria

two upper chambers

ventricle

two lower chambers

interatrial septum

thin partition between left and right atrium

interatrial septum

thin partition between left and right atrium

fossa ovalis

oval depression on interatrial septum

remnant of the foremen ovale

interatrial septum

thin partition between left and right atrium

fossa ovalis

oval depression on interatrial septum

remnant of the foremen ovale

interventricular septum

seperate left and right ventricles

aurocle

slightly increased capacity of atrium

aurocle

slightly increased capacity of atrium

deoxygenated blood

through veins--- superior vena cava, inferior vena cava, and coronary sinus

aurocle

slightly increased capacity of atrium

deoxygenated blood

through veins--- superior vena cava, inferior vena cava, and coronary sinus

pulmonary trunk

blood travels through to the lungs

aurocle

slightly increased capacity of atrium

deoxygenated blood

through veins--- superior vena cava, inferior vena cava, and coronary sinus

pulmonary trunk

blood travels through to the lungs

arteries

carry blood away from the heart

aurocle

slightly increased capacity of atrium

deoxygenated blood

through veins--- superior vena cava, inferior vena cava, and coronary sinus

pulmonary trunk

blood travels through to the lungs

arteries

carry blood away from the heart

ligamentum arteriosum

between pulmonary trunk and the arch of the aorta

atrioventricular valves

lie between the atria and ventricles

bicuspid valve

atrioventricular valve between left atrium and left ventricle

pulmonary and aortic valve

stop the blood from flowing back down into the heart

pulmonary and aortic valve

stop the blood from flowing back down into the heart

coronary circulatikn

the flow of blood through numerous vessels in the myocardium

pacemaker

sets rhythm for entire heart

pacemaker

sets rhythm for entire heart

conduction sustem

route for action potential throughout the heart muscle.

pacemaker

sets rhythm for entire heart

conduction sustem

route for action potential throughout the heart muscle.

sinoatrial node

on right atrial wall; an action potential spontaneously arrives in the sa node

pacemaker

sets rhythm for entire heart

conduction sustem

route for action potential throughout the heart muscle.

sinoatrial node

on right atrial wall; an action potential spontaneously arrives in the sa node

atrioventricular node

action potential slows considerably

pacemaker

sets rhythm for entire heart

conduction sustem

route for action potential throughout the heart muscle.

sinoatrial node

on right atrial wall; an action potential spontaneously arrives in the sa node

atrioventricular node

action potential slows considerably

atrioventricular bundle

only site where action potential can conduct from atria to ventricle