Respiratory Anatomy

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Respiratory Anatomy
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(No Transcript)
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Nasal/oral cavity -gt pharynx -gt epiglottis -gt
larynx -gt trachea -gt bronchi -gt bronchioles -gt
alveoli

• Air enters through the nasal cavities or the
  mouth.
• Foreign particles are prevented from entering
  because of tiny hairs.
• Air is warmed and moistened as it enters the
  body.

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Nasal/oral cavity -gt pharynx -gt epiglottis -gt
larynx -gt trachea -gt bronchi -gt bronchioles -gt
alveoli

• From the nasal cavity, air travels through the
  pharynx (air filled channel in the mouth) into
  the larynx through the epiglottis.

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Nasal/oral cavity -gt pharynx -gt epiglottis -gt
larynx -gt trachea -gt bronchi -gt bronchioles -gt
alveoli

• The pharynx also opens into the esophagus where
  food travels to the stomach.
• When food is chewed, it is forced to the top of
  the mouth, and pushed backwards. This forces the
  epiglottis to close, allowing food to enter the
  esophagus, not the trachea.
• If you swallow too fast, cilia (hair-like protein
  structures) push particles out of respiratory
  tract and force a violent cough.

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Nasal/oral cavity -gt pharynx -gt epiglottis -gt
larynx -gt trachea -gt bronchi -gt bronchioles -gt
alveoli

• Air travels through the larynx, commonly called
  the voice box.
• Elastic ligaments create sound when air from the
  lungs is forced towards the pharynx.
• The larynx is protected by a thick band of
  cartilage, commonly called the Adams Apple. The
  growth of this cartilage and larynx during
  puberty cause the deep voices of males.

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Nasal/oral cavity -gt pharynx -gt epiglottis -gt
larynx -gt trachea -gt bronchi -gt bronchioles -gt
alveoli

• Air travels through the trachea and through right
  and left bronchi. These structures contain
  cartilaginous rings for support.
• The bronchi lead to the right and left lung,
  leading air into the bronchioles.

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Nasal/oral cavity -gt pharynx -gt epiglottis -gt
larynx -gt trachea -gt bronchi -gt bronchioles -gt
alveoli

• The bronchioles lead to the alveoli.
• The alveoli are surrounded by capillaries. It is
  here where oxygen and carbon dioxide exchange
  takes place.

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Structure and Function

• The structure and function of the respiration
  tract is to maximize air exchange, and minimize
  foreign particles from entering the lungs.