BIO348 Practical 2

Front

What fluid is found in the scala tympani?

Back

Perilymph is the fluid found in the scala tympani of the cochlea.

Front

Identify the pigmented epithelium layer.

Back

The pigmented epithelium is a layer of cells in the retina that absorbs excess light and provides nutrients to the photoreceptors.

Front

What is the function of the vestibular membrane?

Back

The vestibular membrane separates the scala vestibuli from the cochlear duct and plays a role in sound wave transmission.

Front

What hormone is secreted by the adrenal cortex layer one?

Back

Aldosterone is secreted by the zona glomerulosa, which is the outermost layer of the adrenal cortex.

Front

Which of the following is NOT an auditory ossicle?

Back

Cochlea is NOT an auditory ossicle; the auditory ossicles are the malleus, incus, and stapes.

Front

What is the role of endolymph in the inner ear?

Back

Endolymph is the fluid in the cochlear duct that helps in the transduction of sound waves into neural signals.

Front

Define the term 'auditory ossicles'.

Back

Auditory ossicles are three small bones in the middle ear (malleus, incus, stapes) that transmit sound vibrations from the eardrum to the inner ear.

Front

What is the function of the cochlea?

Back

The cochlea is responsible for converting sound vibrations into electrical signals that can be interpreted by the brain.

Front

What is the significance of the basilar membrane?

Back

The basilar membrane plays a crucial role in the auditory system by supporting the organ of Corti, where hair cells convert sound vibrations into nerve impulses.

Front

What is the role of the tectorial membrane?

Back

The tectorial membrane is a gelatinous structure in the cochlea that interacts with hair cells to facilitate the conversion of sound waves into electrical signals.