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Nasal cavities: Olfactory epithelium

The mucosa of the olfactory region of the nasal cavity is much thicker than that in respiratory regions. The epithelium includes bipolar neurons with long, non-motile cilia, supporting (sustentacular) cells and basal cells. The mucosal glands, called Bowman’s glands (olfactory glands), are purely serous-secreting. 400x

Mucosa <p>The mucosa of the olfactory region of the nasal cavity is much thicker than that in respiratory regions. The epithelium includes bipolar neurons with long, non-motile cilia, supporting (sustentacular) cells and basal cells. The mucosal glands, called Bowman’s glands (olfactory glands), are purely serous-secreting. 400x</p>

Mucosa

The mucosa of the olfactory region of the nasal cavity is much thicker than that in respiratory regions. The epithelium includes bipolar neurons with long, non-motile cilia, supporting (sustentacular) cells and basal cells. The mucosal glands, called Bowman’s glands (olfactory glands), are purely serous-secreting. 400x
- Olfactory epithelium > <p>The epithelium of the olfactory mucosa consists of bipolar olfactory neurons, support (sustentacular) cells and basal cells. The nuclei of olfactory neurons are generally located in the mid and lower regions; nuclei of supporting cells are present closer to the surface. </p>

- Olfactory epithelium >

The epithelium of the olfactory mucosa consists of bipolar olfactory neurons, support (sustentacular) cells and basal cells. The nuclei of olfactory neurons are generally located in the mid and lower regions; nuclei of supporting cells are present closer to the surface.

- Cilia > <p>Olfactory neurons possess non-motile cilia that may be 5 to 10 times longer than regular cilia. They emerge from an enlargement at the end of the dendrite called the olfactory vesicle. These cilia possess odorant receptors for detecting olfactory stimuli. Supporting cells have microvilli only. </p>

- Cilia >

Olfactory neurons possess non-motile cilia that may be 5 to 10 times longer than regular cilia. They emerge from an enlargement at the end of the dendrite called the olfactory vesicle. These cilia possess odorant receptors for detecting olfactory stimuli. Supporting cells have microvilli only.

- Bowman's glands > <p>Serous glands of Bowman, also called olfactory glands, are present in the lamina propria beneath the epithelium. Their watery secretions prevent water evaporation as well as cleanse the surface for detecting new odorant molecules. </p>

- Bowman's glands >

Serous glands of Bowman, also called olfactory glands, are present in the lamina propria beneath the epithelium. Their watery secretions prevent water evaporation as well as cleanse the surface for detecting new odorant molecules.

-- Ducts of Bowman’s gland <p>Serous glands of Bowman, also called olfactory glands, are present in the lamina propria beneath the epithelium. Their watery secretions prevent water evaporation as well as cleanse the surface for detecting new odorant molecules. </p>

-- Ducts of Bowman’s gland

Serous glands of Bowman, also called olfactory glands, are present in the lamina propria beneath the epithelium. Their watery secretions prevent water evaporation as well as cleanse the surface for detecting new odorant molecules.

- Olfactory nerves > <p>Axons from olfactory neurons collect into fascicles that collectively form the olfactory nerve (cranial nerve I). They pass through the bony cribriform plate to enter the olfactory bulb of the brain. The olfactory mucosa also receives general sensory innervation to detect pain and temperature.</p>

- Olfactory nerves >

Axons from olfactory neurons collect into fascicles that collectively form the olfactory nerve (cranial nerve I). They pass through the bony cribriform plate to enter the olfactory bulb of the brain. The olfactory mucosa also receives general sensory innervation to detect pain and temperature.
Bone <p>Axons from olfactory neurons collect into fascicles that collectively form the olfactory nerve (cranial nerve I). They pass through the bony cribriform plate to enter the olfactory bulb of the brain. The olfactory mucosa also receives general sensory innervation to detect pain and temperature.</p>

Bone

Axons from olfactory neurons collect into fascicles that collectively form the olfactory nerve (cranial nerve I). They pass through the bony cribriform plate to enter the olfactory bulb of the brain. The olfactory mucosa also receives general sensory innervation to detect pain and temperature.
Image source > <p>Image taken of a slide in the University of Mississippi slide collection</p>

Image source >

Image taken of a slide in the University of Mississippi slide collection
Main SlideMucosa - Olfactory epithelium > - Cilia > - Bowman's glands > -- Ducts of Bowman’s gland - Olfactory nerves >BoneImage source >