RESPIRATORY SYSTEM

Origin: evagination from the primitive foregut.

Function:

• leading the air to and from the LUNGS
• conditioning of the air that consists of warming, moistening and removal of particulate materials
• producing the speech
• sense of smell

1. Nasal cavities

• Vestibule
• Respiratory segment (mucosa)
• Olfactory segment (mucosa)
• Sinuses

2. Pharynx

• Nasopharynx
• Oropharynx
• Pharyngeal tonsils (adenoids)

3. Larynx

• Vocal folds (cords)
• False vocal cords (ventricular folds)

4. Trachea

• Mucosa
• Submucosa
• Cartilaginous layer
• Adventitia

5. Bronchi

• Anatomical features
• Mucosa
• Muscularis
• Submucosa
• Cartilaginous layer
• Adventitia

6. Bronchioles

• Large bronchioles
• Terminal bronchioles
• Respiratory bronchioles

7. Alveoli

• Alveolar epithelium
• Alveolar septum
• Alveolar macrophages