Understanding Sound and Equilibrium

These flashcards cover the mechanisms of sound transmission and equilibrium in the human ear.

What creates sound?

Sound is created by vibrations in the air that beat against the eardrum.

How does the ear help maintain equilibrium?

The ear maintains equilibrium through structures in the inner ear that detect changes in head position.

What is the frequency of a sound wave?

Frequency is the number of waves that pass a certain point at a given time.

What is amplitude in the context of sound?

Amplitude is the difference between the high and low pressures created in the air by a sound wave.

What structure funnels sound waves into the ear?

The pinna, or auricle, is the part that catches sound waves and directs them into the ear.

What is the role of the tympanic membrane?

The tympanic membrane, or eardrum, vibrates in response to sound waves and transmits these vibrations to the middle ear.

What are auditory ossicles?

Auditory ossicles are three tiny bones in the middle ear that amplify sound vibrations.

What is the cochlea?

The cochlea is a spiral-shaped structure in the inner ear that converts sound vibrations into electrical impulses.

What are hair cells?

Hair cells are sensory cells in the organ of Corti that detect vibrations and convert them into electrical signals.

How does the brain interpret sound pitch?

The brain interprets pitch based on the location of the hair cells that are triggered in the cochlea.

What is the vestibular apparatus?

The vestibular apparatus is a structure in the inner ear that helps maintain balance and equilibrium.

How do semicircular canals function in balance?

Semicircular canals detect head rotation through the movement of fluid within them.