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How is the lung tissue organized for maximum air/blood relationships? Draw and describe the alveoli sacs...

  1. How is the lung tissue organized for maximum air/blood relationships? Draw and describe the alveoli sacs and their respective capillaries.
  1. How are the diaphragm and rib muscles used to breathe in and out?
Science   Anatomy-And-Physiology   
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Answer #1
  • Air reaches the alveolar lumen via a conductive airway
  • Blood flow in a capillary network embedded in the alveolar septa

A barrier between air& blood consists of a continuous alveolar epithelium, a continuous capillary endothelium and connective tissue layer in between.

Alveolar sac& capillaries

When we breathe in,or inhale our diaphragm contracts and moves downward.

  • this increase the space in chest cavity and our lung expand.
  • ​​​​​​​The muscle between our ribs also help enlarge the chest cavity and contract.
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