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Medical Physics

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Medical Physics
The Heart
• What does it generate?

• Why is that so important?

• Found in the… • Apex points at… • Base points at…

• Sits atop the…
• Medial to… • Anterior to the… • Posterior to the…

Fibrous Pericardium
• Made of…

• Encloses.

• Stabilizes.

• Prevents...

Serous Pericardium
• Deep to the… • 2 layers

• Parietal pericardium • Visceral pericardium • Pericardial cavity.

3 Layers of the Heart Wall
• Epicardium

• Myocardium
• Endocardium.

Heart Chambers
• 4 chambers.

• 2 superior atria.

• 2 inferior ventricles.

Right Atrium Right Ventricle

Systemic Circuit

Pulmonary Circuit

Left Ventricle

Left atrium

• Superior.

Atria

• Receive…

• Separated by…

• Small.

Right Atrium
• Receives what kind of blood? • From which circuit? • Receives 3 main vessels – SVC – IVC – CS • Sends blood thru the tricuspid orifice (past the tricuspid valve) to the…

Upper Body Circulation (above the diaphragm)

Coronary Circulation

Superior Vena Cava

Coronary Sinus

Inferior Vena Cava

Right Atrium

Lower Body Circulation (below the diaphragm)

Left Atrium
• Receives what kind of blood? • From which circuit?

• Receives 4 vessels – Pulmonary veins

• Sends blood thru the mitral orifice (past the mitral valve) to the…

Interatrial Septum
• Function?

• Adult vs. Fetus

• Fossa ovalis.

• Foramen ovale.

Why do the fetal atria connect?
• What gets skipped?

•

Where does fetal gas exchange occur?

•

Which direction does blood flow?

•

Right atrium BP _______ Left Atrium BP

Ventricles
• Inferior chambers. • Pumps.

• Separated by…

• Muscular.

• Trabeculae carneae

Right Ventricle
• Receives what kind of blood?

• From where?

• Pumps to what circuit?

Right Ventricle
• Discharges blood into the…

• Pulmonary semilunar valve

• Tricuspid valve

Left Ventricle
• Receives what kind of blood?

• From where?

• Pumps to what
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