Heart info Flashcards

1
Q

Blood flo

A
Pulmonary (right)
Body flow (left)
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2
Q

Where is the heart located?

A

Sits in the mediastinum

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3
Q

The pericardium

A

Connective tissue layer that protects the heart

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4
Q

Top of the heart

A

The base

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5
Q

Fibrous pericardium

A
  • outer most layer + tough
  • dense irregular connective tissue
  • similar to duramater of the brain
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6
Q

Serous pericardium

A

made of two layers: the parietal layer and epicardium

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7
Q

parietal layer

A

in contact / fused to the fibrous layer

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8
Q

epicardium

A
  • purpose is to create a frictionless layer
  • “visceral layer”
  • shiny
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9
Q

pericardial fluid

A

in the pericardial cavity

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10
Q

pericardial cavity

A

between paricardial layer + visceral layer

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11
Q

What is pericarditis?

A
  • inflammation of the pericardium

- restricts movement of the heart

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12
Q

Epicardium

A
  • external visceral layer

- frictionless surface

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13
Q

Myocardium

A
  • the muscle of the heart
  • auto-rythmic
  • intercollated discs
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14
Q

Endocardium

A
  • A macine heart pump cannot replicate
  • layers of trabeculate
  • cover inner wall of heart chamber
  • rbc need to roll and tumble and not be smooshed
  • values of the heart are continuous with this
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15
Q

What is the most muscular chamber?

A

The left ventricle

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16
Q

Artia (Auricles)

A
  • recieving chambers
  • small + thin
  • dark blood ( least oxygen as possible)
17
Q

What does the right atria recieve from?

A

The inferior/superior vena cava

18
Q

What does the left atrium receive from?

A

Lungs + highest oxygen (pulmonary concentration vein)

19
Q

angina pecturis

A

intense chest pain associated with heart attack

20
Q

How do the valves operate?

A

When heart betas, they’re closed (AV valves)

When heart is relaxed, they’re open (semi lunar valves)