BIO NMDCAT Receptors

nmdcat.online July 7, 2026

The gelatinous mass overlying the hair cells in the macula of the utricle and saccule is known as the

A. Cupula

B. Tectorial membrane

C. Otolithic membrane

✓

D. Basilar membrane

📝 Explanation

The otolithic membrane is the gelatinous layer studded with heavy otoliths. When the head tilts, gravity pulls this membrane, bending the hair cells of the macula. The cupula is in the semicircular canals, and the tectorial membrane is in the cochlea.

📖 Additional Information

Cupula
Tectorial membrane
Otolithic membrane
Basilar membrane

The otolithic membrane is the gelatinous layer studded with heavy otoliths. When the head tilts, gravity pulls this membrane, bending the hair cells of the macula. The cupula is in the semicircular canals, and the tectorial membrane is in the cochlea.

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