Heart Flashcards
1
Q
Heart Beats
A
75/minute
2
Q
Average cardiac output
A
5.25 Liters/min
3
Q
Dual pump for…
A
pulmonary and systemic
4
Q
Components of Heart (4)
A
Atria Ventricles Pulmonary Circuit Systemic Circuit
5
Q
Inferior or Diaphragmatic Surface Shape, Position, Component
A
- Concave
- Lower border of T8-T9
- Left Ventricle
6
Q
Posterior Surface (base)
A
- Quadrilateral
- Opposite of T5-T8
- Left atrium
7
Q
Anterior or Sternocostal Surface
A
- Flattened
- Posterior to sternum and costal cartilages 3-6
- Right atrium and right ventricle
8
Q
Right Surface
A
- Convex
- Lateral to the right border of sternum
- Right atrium
9
Q
Left Surface
A
- Convex
- 1/2 inch to left of manubriosternal junction to apex
- Left ventricle
10
Q
Pericardium layers
A
Fibrous pericardium
Serous Pericardium
- Parietal layer
- Visceral layer
11
Q
Pericardial Cavity contains…
A
Serous fluid
12
Q
Pericardium Functions
A
Prevents undesired movement
Prevents overfilling of heart
Reduces friction
13
Q
Pericarditis
A
Inflammation of pericardium
14
Q
Heart Wall 3 layers
A
- Superficial–> Deep
- Epicardium (Same as visceral pericardium)
- Myocardium- Muscle infarctions occur here
- Endocardium- lines chambers, covers valves
15
Q
Valves
- Structure
- Function
A
Structure-
Dense connective tissue
2 or 3 cusps
Function
Blood passes in one direction
