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Nose, olfactory region and the sinuses (L1) 2012

Nose, olfactory region and the sinuses (L1) 2012. Nose. Olfactory mucosa. Respiratory mucosa. nasal conchae. Nose wings. Nasal ala. lamina propria. hyaline cartilage. mixed glands. hair. skeletal muscle. unkertinized stratified epithelium. Skin - OUTSIDE.

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Nose, olfactory region and the sinuses (L1) 2012

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  1. Nose, olfactory region and the sinuses (L1)2012

  2. Nose Olfactory mucosa Respiratory mucosa nasal conchae Nose wings

  3. Nasal ala lamina propria hyaline cartilage mixed glands hair skeletal muscle unkertinized stratified epithelium Skin -OUTSIDE

  4. Respiratory mucosa of nasal cavity Ciliated pseudostratified cylindrical epithelium Mucous goblet cells artery mixed glands large veins bone

  5. Olfactory region • Located in respiratory part of the nasal cavity • Begins at the front of the anterior end of the superior concha and extends posterior for about 1 cm • Extends laterally from the roof over the largest part of the superior concha and medially for about 1 cm over the nasal septum

  6. Olfactory mucosa OLFACTORY EPITHELIUM Olfactory nerve fibers Large veins Gland of Bowman LAMINA PROPRIA bone

  7. Olfactory epithelium Cell types Pseudostratified cylindrical epithelium Olfactory cells Support cells Basal cells Olfactory cilia Olfactory vesicle dendrite Support cell Olfactory cell body Basal cell axon

  8. Lamina propria • Contains many veins - usually flat (Allergies - veins fill with blood and cause a blocked nose) • Contains tubulo-alveolar glands namely Bowman’s glands that secrete a thin watery substance that facilitates smell stimuli • Rest of the lamina propria contains mixed glands • The lamina propria is located against the perichondrium of the hyaline cartilage

  9. Paranasal sinuses Mucosa Epithelium: • Pseudostratified cylindrical with cilia • Thinner than nasal epithelium • Less goblet cells and mixed glands • Thinner basement membrane Lamina propria is thin and rests against the periosteum of the bone

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