Functioning of the Human Ear (Grade 12 NSC Matric Life Sciences): Flashcards
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Two main functions of the human ear
Two main functions of the human ear
Hearing and maintaining balance/spatial orientation
Three main sections of the human ear
Three main sections of the human ear
Outer ear, middle ear, inner ear
Three ossicles in the middle ear
Three ossicles in the middle ear
Hammer (malleus), anvil (incus), stirrup (stapes)
Function of the cochlea
Function of the cochlea
Spiral structure in inner ear for hearing
Function of maculae in balance
Function of maculae in balance
Detect gravity & head position, send signals to cerebellum
Function of cristae ampullae
Function of cristae ampullae
Detect rotational movement via endolymph fluid movement
Role of organ of Corti
Role of organ of Corti
Convert mechanical vibrations to electrical impulses via hair cells
Cause of middle ear infection
Cause of middle ear infection
Bacteria/viruses enter, cause inflammation & fluid buildup
What is a grommet?
What is a grommet?
Tiny tube in eardrum to drain fluid & prevent infections
How cochlear implants work
How cochlear implants work
Convert sound to electrical impulses, bypass damaged cochlea