Question

Olfactory nerves paragraph

• at least 5 major facts about olfactory cranial nerve (complete sentences are required; base facts off the cranial nerve objectives provided below)
• Include at least two labeled pictures (labels must be added by the student)
• Include your resources

Answer 1

Olfactory nerve is the one among the 12 cranial nerves located within the head. It is responsible for the sense of smell. It relays sensory data to the brain.
In the nasal mucosa there are bipolar cells which give rise to axons that enter the cranial cavity through foramina in the cribriform plate of the ethmoid bone. These cells and their axons make up the olfactory nerve.Once in the cranial cavity, the fibres terminates in a small oval structure resting on the cribriform plate called the olfactory bulb. The functional component of olfactory fibres is special visceral afferent.
Facts about Olfactory nerve:
1. This is the smallest nerve located in the upper-back part of the nose which is about the size of a postage stamp.
2. The flavor is fundamentally a fusion of taste and smell.
3. The sense of smell is a key player in the ability to taste.
4. Anosmia is the complete loss of the sense of smell. It can be permanent or temporary.
5. The sense of smell is the only cranial nerve- nerves that emerge from the brain and control bodily functions including eye movement , taste, vision and hearing.
6. Loss of smell may be a signal of future illness : Decreased smell may be an early sign of Alzheimers or parkinson's disease.

The diagram of olfactory receptor neuron and sagital section of nasal cavity is given in the figure.
Olfactory bulb nzon Basal al Pignant - Supporting Cell - Olfactory receptor CILIA - MICROVILLI - +91: Diagram of factory receptor neuron

olactong bulbs I neve Xasal cavity Figuez Sagita Section og Wasat cavity