| A | B |
|---|
| 300 Thousand | # of tones the ear can discriminate |
| 3 | # of tiny bones conducting sound in the middle ear |
| Balance | The ear is responsible for hearing & maintaining a sense of _ |
| Ear Wax | Provides protection for the ear |
| Tympanum | Membrane acts as barrier between external and middle ear |
| Tympanum | Sound waves vibrate off the _ then travel to middle ear |
| Eustachian Tube | Tube leading from middle ear to pharynx |
| Eustachian Tube | Equalizes pressure in the ear |
| External Auditory canal | Sound travels down this canal leading to the eardrum |
| External Ear | Consists of the pinna, external auditory meatus & the eardrum |
| External Ear | The ear is composed of three separate regions - inner ear, middle ear & |
| Incus | Another term for this tiny bone in the middle ear (anvil) |
| Incus | Sound is transmitted from eardrum to malleus, to _, to stapes. |
| Inner Ear | Consists of the labyrinth & organ of corti |
| Inner Ear | The ear is composed of three separate regions - external ear, middle ear & |
| Malleus | Another term for this tiny bone in the middle ear (hammer) |
| Malleus | Sound is transmitted from eardrum to _, to incus, to stapes. |
| Middle Ear | Consists of the ossicles, oval window & the eustachian tube |
| Middle Ear | The ear is composed of three separate regions - external ear, inner ear & |
| Ossicles | Three tiny bones conduct sound through the middle ear, the malleus (hammer), incus (anvil) and stapes (stirrup). |
| Oval Window | Separates the middle ear from the inner ear |
| Pharynx | Infection can travel from the _ via the eustachain tube, causing a middle ear infection, common in children |
| Pinna | Visible outside flap of ear - external to the head |
| Sensory Organ | The ear is a _ _ |
| Stapes | Another term for this tiny bone in the middle ear (stirrup) |
| Stapes | Vibrate against the oval window transmitting sound to the inner ear |
| Stapes | Sound is transmitted from eardrum to malleus, to incus, to _. |
| Tympanic Membrane | Another term for eardrum |
| Semi circular canals | Concerned with balance |
| Hair cells | Sensitive to sound |
| Auditory nerve | Carry nerve impulses to the brain |
| Earache | Caused by a build up of pressure in the middle ear |
