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Cardiology > Chapter 1 : Anatomy and Basic Physiology > Flashcards

Chapter 1 : Anatomy and Basic Physiology Flashcards

1
Q

What are the four main chambers of the heart?

A

Two Atria and Two Ventricles

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2
Q

Which ventricle empties into the pulmonary system?

A

Right Ventricle

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3
Q

Which ventricle empties into peripheral circulation?

A

Left Ventricle

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4
Q

How do you calculate cardiac output?

A

Stroke Volume x Heart Rate

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5
Q

What is the only electrical communication between the atria and the ventricles?

A

The AV node

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6
Q

What is the function of the AV node?

A

Slows the conduction of the impulse from the atria to the ventricles

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7
Q

What is the main pacemaker of the heart?

A

The SA node

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8
Q

Where does the SA node get its blood supply?

A

59% right coronary artery 38% left coronary artery 3% Both

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9
Q

What is the purpose of the internodal pathways?

A

Transmit the pacing impulse from the SA node to the AV node

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10
Q

What is the small tract of specialized cells that transmit the impulses through the interatrial septum?

A

Bachman Bundle

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11
Q

What is the largest vein in the heart?

A

Coronary Sinus

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12
Q

What supplies blood to the AV node?

A

Right Coronary Artery

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13
Q

What is the Bundle of His?

A

Starts at the AV node. Is the only Route of communication between the atria and the ventricles

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14
Q

What is the Left Bundle Branch? (LBB)

A

Begins at the end of the His Bundle and travels through the interventricular septum. It connects to a small set of fibers that innervate the upper segment of the interventricular septum.

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15
Q

What is the Right Bundle Branch? (RBB)

A

Starts at the His Bundle. Will innervate the RV and the right face of the interventricular septum.

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16
Q

What is the Left Anterior Fascicle? (LAF)

A

Travels through the left ventricle to the purkinje cells that innervate the anterior and superior aspects of the left ventricle. Single stranded in comparison to the LPF.

17
Q

What is the Left Posterior Fascicle? (LPF)

A

Fan like structure leading to the purkinje cells that will innervate the posterior and inferior aspects of the left ventricle

18
Q

What is the purkinje system?

A

Individual cells just beneath the endocardium. Cells that directly innervate the myocardial cells and initiate the ventricular depolarization cycle

19
Q

What are the four arrhythmogenic zones?

A

SA node (Sinus), Atrial, AV node (Nodal), Ventricular

Cardiology (41 decks)

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