Hearing - The Ear (Leaving Cert Biology): Flashcards
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15 cards from this deck
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Practise the cards
15 cards from this deck
Two main functions of the ear
Two main functions of the ear
Hearing and balance
Three sections of the ear
Three sections of the ear
Outer ear, middle ear, inner ear
What fills the outer and middle ear?
What fills the outer and middle ear?
Air
What fills the inner ear?
What fills the inner ear?
Lymph
What is the pinna made of?
What is the pinna made of?
Cartilage
Function of the eardrum
Function of the eardrum
Vibrates when stimulated by sound
Name the three ossicles
Name the three ossicles
Hammer, anvil, stirrup
Function of Eustachian tube
Function of Eustachian tube
Equalises pressure on either side of the eardrum
Shape of the cochlea
Shape of the cochlea
Spiral tube resembling a snail's shell
Function of cochlea
Function of cochlea
Hearing
Structure of semi-circular canals
Structure of semi-circular canals
Three canals positioned at right angles
Function of semi-circular canals
Function of semi-circular canals
Balance
Smallest bone in the body
Smallest bone in the body
Stirrup
Cause of glue ear
Cause of glue ear
Fluid build-up in middle ear
Correction for severe glue ear
Correction for severe glue ear
Grommets inserted into eardrum