The Ear

Question 1

Oval window

Answer 1

Bony wall with two openings

Question 2

Auditory tube

Answer 2

Runs obliquely downward to link the middle ear cavity with the throat

Question 3

Perilymph

Answer 3

Plasma like fluid in the bony labyrinth

Question 4

Endolymph

Answer 4

Thicker fluid in the membranous labyrinth

Question 5

Vestibular apparatus

Answer 5

Equilibrium receptors of the inner ear

Question 6

Maculae

Answer 6

In the vestibule; receptors that are essential to static equilibrium; respond to gravity

Question 7

Otolithic membrane

Answer 7

Membrane hosting maculae and otoliths

Question 8

Crista ampullaris

Answer 8

Receptor region in the semicircular canal; consists of hair cells with a gel cap called the cupula

Question 9

Cupula

Answer 9

Gelatinous cap on hair cells in the crista ampullaris

Question 10

Organ of Corti

Answer 10

Endolymph-containing membranous labyrinth of the cochlea which contains hearing receptors

Question 11

Basilar membrane

Answer 11

Receives vibrations when the oval window is struck, and the receptors on the membrane are stimulated when the hairs are bent

Question 12

Tectorial membrane

Answer 12

Lies above the basilar membrane; hair cells are bent in the basilar membrane by this membrane

Question 13

Mechanoreceptors

Answer 13

Receptors that respond to physical forces of head movements

Question 14

Presbycusis

Answer 14

Type of sensorineural deafness caused by a deterioration of the organ of Corti in the cochlea