Definition

Noun: * Olfactory nerve: The "first cranial nerve" is the collective term for the numerous olfactory filaments (sensory nerve fibers) located in the nasal mucosa. It is responsible for the sense of smell.

Usage

• The term "first cranial nerve" is used in formal, anatomical, and medical contexts to refer specifically to the nerve responsible for transmitting olfactory information from the nose to the brain.
• It is often used interchangeably with "olfactory nerve," though "olfactory nerve" is more common in general usage.

Examples

• Damage to the first cranial nerve can result in a loss of smell, a condition known as anosmia.
• In the anatomy lab, students identified the first cranial nerve as it passed through the cribriform plate of the ethmoid bone.
• The neurologist tested the function of the patient's first cranial nerve by asking them to identify common scents.

Advanced Usage

• Clinical context: The function of the first cranial nerve is routinely assessed during neurological examinations.
  • The physician's evaluation included a check of all twelve cranial nerves, starting with the first cranial nerve.

Variants and Related Words

• Olfactory nerve: The most common synonym.
• Cranial Nerve I: The Roman numeral designation used in formal anatomical nomenclature.
• Nervus olfactorius: The Latin term.

Synonyms

• Olfactory nerve
• Cranial Nerve I

Related Phrases / Terms

• Cranial nerves: The set of twelve paired nerves that emerge directly from the brain. The first cranial nerve is the most anterior.
• Olfactory epithelium: The specialized tissue in the nasal cavity containing the sensory neurons of the first cranial nerve.
• Olfactory bulb: The brain structure where the first cranial nerve terminates and synapses.

Noun

1. a collective term for numerous olfactory filaments in the nasal mucosa