ear Flashcards
(17 cards)
What are the three sections of the ear?
Outer ear, middle ear, inner ear
What is the function of the ear?
To change sounds into nerve impulses
What is the visible part of the ear called?
Pinna
What is the length of the auditory canal?
2.5 cm
What lines the auditory canal?
Fine hair and glands that produce wax
What is the role of the eardrum (tympanic membrane)?
Moves to the vibrations
What are the three small bones in the middle ear called?
Hammer, stirrup, anvil
What does the Eustachian tube connect to?
The pharynx
What is the function of the Eustachian tube?
To equalize pressure when swallowing
What are the semi-circular canals responsible for?
Helping with balance when the body is in motion
What connects the semi-circular canals with the cochlea?
Vestibule
What is the cochlea filled with?
Liquid
What type of cells cover the walls of the cochlea?
Auditory nerve cells
What is the role of some cells from the vestibule of the inner ear?
To detect the position of the head for balance in a stationary position
What do other cells of the inner ear perceive?
Changes in speed and direction
True or False: The ear is the center for balance.
True
Fill in the blank: The _______ is the only visible part of the ear.
Pinna
