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42 Cards in this Set

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The _____ _____ receives blood from the systemic circuit
right atrium
the ____ _____ pumps blood into the pulmonary circuit
right ventricle
The ____ ____ collects blood from the pulmonary circuit
left atrium
the ___ ___ contracts, ejecting blood into the systemic circuit.
left ventricle
Review: Circulation through the heart
1-rt atrium, 2-rt vent.,
3-pulm.circuit, 4-lt atrium, 5-lt vent.,
7-systemic circuit
The heart, surrounded by the pericardial cavity, sits in the ___ portion of the ___
anterior, mediastinum
the region between the two pleural cavities contains the thymus, esophagus, and trachea.
mediastinum
The expandable extension of an atrium is called an atrial appendage, or an _____
auricle
a deep groove that marks the border between the atria and the ventricles
The coronary sulcus
Three distinct layers of the heart: the outer ____, the middle ___ and the inner ___
An outer epicardium
A middle myocardium
An inner endocardium
visceral pericardium that covers the outer surface of the heart
epicardium
Cardiac tissue layer that contains cardiac muscle tissue, blood vessels, and nerves.
myocardium
Cardiac tissue layer that consists of concentric layers of cardiac muscle tissue
myocardium
simple squamous epithelium that is continuous with the endothelium of the attached blood vessels.
endocardium
Tendinous connective tissue fibers attached to the AV valves
Chordae tendineae
Conical Muscular projections on the inner wall and the surface of ventricles
Papillary muscle and trabeculae carneae
receives blood from the systemic circuit
Right atrium
The two "great veins"
the superior and inferior vena cava
Valve between right atria and right ventricle
Tricuspid valve
Valve between right ventricle and pulmonary circuit
Pulmonary valve
blood returns from the pulmonary circuit to enter the heart at the ___ ___
Left atrium
Valve between left atria and left ventricle
Bicuspid valve (Mitral Valve)
Last chamber of the heart before entering the systemic circuit.
Left ventricle
Valve between the left ventricle and the Aorta
Aortic valve
Supplies blood to the left ventricle, left atrium, and interventricular septum
The right and left coronary arteries
it gives rise to a circumflex branch and an anterior interventricular branch
left coronary artery
located in the wall of the right atrium begins the action potential
The sinoatrial (SA) node
Where is the AV node located?
At the junction between atria and ventricles
The ventricular conducting cells include: (3)
1. AV node
2. The bundle branches
3. The Purkinje fibers
Located in the wall of the right atrium, it establishes the heart rate
The sino-atrial (SA) node
The P wave accompanies the depolarization of the ___
Atria
The QRS complex appears as the ___ depolarize
ventricles
The T wave indicates ___ ___
ventricular repolarization
Ventricular Systole; The ventricles are in the period of ___ contraction
isovolumetric
All the heart valves are closed, the volumes of the ventricles remain constant, and ventricular pressures rise
isovolumetric contraction
"lubb” sound caused by the closing of the AV valves.
S1
The sound at the start of the Ventricular conntraction.
S1, or "lub" sound
“dupp” sound caused by the closing of the semilunar valves.
S2
closing of the semilunar valves
S2, or "dupp" sound
heart rate times stroke volume equals _____
cardiac output
Many Drugs used to treat Hypertension have a (negative or positive) inotropic action
negative
Beta Drugs: block beta, alpha receptors, or both and prevent ___ stimulation of the heart.
sympathetic