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10 Cards in this Set

  • Front
  • Back
Diaphragm
dome shape with central tendon in middle
○ Relaxation - Dome Shaped
○ Contraction - Flat... to increase thoracic cavity volume to decrease thoracic cavity pressure. Also decreases abdominal cavity volume and increase abdominal cavity pressure.
INN: C3,4,5 Phrenic nn.
Intercostals play role in...
...play role in creating a ridged wall for negative pressure inside thorax
Abdominals contracted can...
...contracted can force the abdominal viscera against the abdominal diaphragm to force air out.
Pericardium
- a Serous Membrane around the heart. (similar to lungs)
○ 1st Level of Pericardium
§ Visceral Pericardium
§ Parietal Pericardium
○ 2nd Level
§ Pericardial Cavity between the Visceral and Parietal layers
○ 3rd Layer (lungs only have 2 layers)
§ Fibrous Pericardium
□ anchors heart to the sternum anteriorly and the diaphragm inferiorly.
□ It’s a very tough connective tissue
Veins
- any vessel take blood to the heart
Artery
- any vessel taking blood away from heart
Return blood from upper limbs
Subclavian vv. (Left and Right)
Returns blood from head
Internal Jugular v.
Where Subclavian vv. joins with Internal Jugular v.
Brachiocephalic vv.
empties into right atrium
Superior Vena Cava