Question

multiple choice question

which term refers to the patch of hair cells and supporting cells positioned vertically on the wall of the saccule?

spiral ganglion
macula sacculi
organ of corti
macula utriculi

Explanation:

Identify the anatomical structure

The question asks for the term that refers to the patch of hair cells and supporting cells positioned vertically on the wall of the saccule. The saccule and utricle are the two otolith organs located within the vestibule of the inner ear, which are responsible for detecting gravity and linear acceleration.

Analyze the options

• Spiral ganglion: A group of nerve cell bodies in the cochlea that sends auditory information to the brain.
• Macula sacculi: The sensory epithelium (patch of hair cells and supporting cells) located vertically on the wall of the saccule.
• Organ of Corti: The receptor organ for hearing, located in the cochlea.
• Macula utriculi: The sensory epithelium located horizontally on the floor of the utricle.

Match the definition

The sensory patch in the saccule is specifically called the macula sacculi (or macula of the saccule). It is oriented nearly vertically on the wall of the saccule to detect vertical linear acceleration (such as riding in an elevator).

Answer:

• Spiral ganglion
• Macula sacculi (Correct answer)
• Organ of Corti
• Macula utriculi