The nictating membranes protect the eyes of many animals.

The basement membranes provide structural support to the tissues.

The Schneiderian membranes protect the nasal cavity.

The doctor examined the patient's tympanic membranes.

The microscope slides are covered with aperture membranes.

Zinn's membranes are delicate structures in the eye.

The patient's eyes were examined and found to have cyclitic membranes.

The Descemet's membranes protect the cornea.

The doctor diagnosed her with ruptured membranes.

The hyaloid membranes in the eye help maintain the shape of the vitreous humor.