Review MI Unit 1

Front

What does an audiogram showing mild hearing loss indicate?

Back

It indicates that the individual has some difficulty hearing certain sounds, but not to the extent of severe hearing loss.

Front

What is the Polymerase Chain Reaction (PCR)?

Back

A laboratory technique used to amplify small amounts of DNA, producing millions of copies.

Front

What is the correct order of sound travel through the ear?

Back

pinna, tympanic membrane, stapes, cochlea, cochlear nerve.

Front

What color do Gram Negative bacteria stain?

Back

They stain pink.

Front

What distinguishes Gram Positive bacteria from Gram Negative bacteria?

Back

Gram Positive bacteria stain purple due to a thick peptidoglycan layer in their cell wall.

Front

What is the function of the pinna in the ear?

Back

The pinna collects sound waves and directs them into the auditory canal.

Front

What role does the tympanic membrane play in hearing?

Back

It vibrates in response to sound waves, transmitting the vibrations to the ossicles.

Front

What are the ossicles in the ear?

Back

The three small bones (malleus, incus, stapes) that amplify sound vibrations.

Front

What is the cochlea's function?

Back

It converts sound vibrations into electrical signals that are sent to the brain.

Front

What is the significance of the cochlear nerve?

Back

It transmits auditory information from the cochlea to the brain.