CN1 Olfactory nerve

Question 1

What is cranial nerve 1?

Answer 1

Olfactory nerve

Question 2

What does the CN1 olfactory nerve innervate?

Answer 2

Olfactory mucosa in roof of nasal cavity

Question 3

What is the route of the CN1 olfactory nerve from its innervation to its origin?

Answer 3

Passes through cribriform foramina of ethmoid bone
forms olfactory bulb, which sits on top of the cribfirom plate of ethmoid bone
forms olfactory tracts, which runs to forebrain

Question 4

What is the function of the CN1 olfactory nerve?

Answer 4

Special sensory - olfaction, meaning sense of smell