Olfactory nerve filaments are found
a. In the optic bulbs
b. Passing through the cribriform plate of the ethmoid bone
c. In the optic tracts
d. In the olfactory cortex

검증된 단계별 안내

Step 1: Understand the anatomy of the olfactory nerve (cranial nerve I), which is responsible for the sense of smell. It consists of filaments that connect the nasal cavity to the brain.

Step 2: Recall that the olfactory nerve filaments pass from the nasal mucosa through small holes in the cribriform plate of the ethmoid bone to reach the olfactory bulbs.

Step 3: Recognize that the olfactory bulbs are structures located on the inferior surface of the frontal lobe of the brain, where the olfactory nerve filaments synapse.

Step 4: Differentiate the olfactory nerve filaments from other structures such as the optic bulbs and optic tracts, which are related to vision, not smell.

Step 5: Conclude that the correct anatomical location of the olfactory nerve filaments is passing through the cribriform plate of the ethmoid bone.

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주요 개념

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Olfactory Nerve Anatomy

The olfactory nerve (cranial nerve I) consists of sensory nerve fibers responsible for the sense of smell. These filaments originate in the nasal mucosa and pass through the cribriform plate of the ethmoid bone to reach the olfactory bulb.

Cribriform Plate of the Ethmoid Bone

The cribriform plate is a sieve-like structure in the ethmoid bone located at the roof of the nasal cavity. It allows the passage of olfactory nerve filaments from the nasal mucosa to the olfactory bulbs in the brain.

Olfactory Bulbs and Tracts

The olfactory bulbs are neural structures that receive input from olfactory nerve filaments. From the bulbs, the olfactory tracts carry signals to the olfactory cortex for processing the sense of smell.

Olfactory nerve filaments are founda. In the optic bulbsb. Passing through the cribriform plate of the ethmoid bonec. In the optic tractsd. In the olfactory cortex