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ERMG1230 > MOD 1: HEART PATHOLOGY (incomplete) > Flashcards

MOD 1: HEART PATHOLOGY (incomplete) Flashcards

1
Q

Functions of the Heart

A

Generating blood pressure

Routing blood through pulmonary and systems

Regulating blood supply to meet metabolic needs (perfusion)

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2
Q

Heart Chambers

A

Left Atrium
Right Atrium
Left Ventricle
Right Ventricle

Atriums are superior
Ventricles are inferior

Chambers are separated by septum

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3
Q

Heart Valves

A

Atrioventricular Valves (AV Valves)
- Tricuspid & Mitral (Bicuspid) Valves

Semilunar Valves
- Pulmonary & Aortic Valves

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4
Q

Atrioventricular Valves (AV Valves)

A

Tricuspid Valve
- 3 cusps
- Connects the right atrium to the right ventricle

Mitral (Bicuspid) Valve
- 2 cusps
- Connects the left atrium to the left ventricle

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5
Q

Semilunar Valves

A

Pulmonary Valve
- 3 cusps
- Connects the right ventricle to the pulmonary artery

Aortic Valve
- 3 cusps
- Connects the left ventricle to the aorta

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6
Q

Heart Location

A

Located in the thoracic cavity between the lungs

Anteriorly rests between the 2nd-6th ribs

Posteriorly rests against the 5th-8th vertebrae

2/3 of the heart left of the midline (left lung is smaller due to this)

1/3 of the heart is right of the midline

Apex of the heart is resting atop the diaphragm

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7
Q

Size of the heart

A

4.75” long
3.5” wide
2.5” deep

‘Size of a fist’

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8
Q

Heart Pumps

A

Two pumps

Right Pump:
Low Pressure
Pulmonary Circulation

Left Pump:
High pressure
System Circulation

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9
Q

Right Pump

A

> Vena Cavas
Right Atrium
Tricuspid Valve
Right Ventricle
Pulmonary Valve
Pulmonary Arteries
Lungs

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10
Q

Left Pump

A

> Lungs
Pulmonary Vein
Left Atrium
Mitral (Bicuspid) Valve
Left Ventricle
Aortic Valve
Aorta
Coronary Arteries

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11
Q

Coronary Arteries

A

Branch directly off the Aorta above the Aortic valve

Split into left and right

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12
Q

Left Coronary Artery

A
  • Left cusp of the Aortic valve
  • Divides into the Left Anterior Descending Artery and Anterior Interventricular
  • Supplies 65-75% of the blood supply to the left ventricle and septum
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13
Q

Right Coronary Artery

A
  • Right cusp of the Aortic valve
  • Divides into the Right Marginal Artery and Posterior Interventricular
  • Supplies 25-35% of the blood supply to the left ventricle
  • Supplies 100% of the blood supply to the right ventricle
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14
Q

Pericardium

A

Outer layer of the heart

Consists of
- Pericardial Cavity
- Pericardial Sac
- Fibrous Pericardium
- Serous Pericardium

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15
Q

Pericardial Cavity

A

Space filled with ~10-15mls

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ERMG1230 (3 decks)

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