Elementary Structure and Function of Ear
Elementary Structure and Function of Ear: Overview
This topic covers concepts such as Mechanism of Hearing, Organ of Corti, Diseases of Ear, Stria Vascularis, Ears, Structure of Human Ear, External Ear, External Auditory Canal, Tympanic Membrane, Middle Ear, Ear Bones, and Internal Ear.
Important Questions on Elementary Structure and Function of Ear
Choose the membrane from the options given below which separates scala media and scala tympani of the cochlea.

Name two diseases of ears in the body of a human.

Otitis externa is a disease of heart.

Otosclerosis is a disease of the _____ (ear/eye).

Which of the following is a disease of the ear?

Meniere's Disease is a disease of eyes.

Explain the function of Stria vascularis of the ear.

Which of the following produces the action potential in scala media?

The outer wall of the cochlear duct is formed by Stria Vascularis.

Otoconium is found in

Study the following statements
I) Stereocilia are long, non-motile cilia like processes and are found in the epididymis, internal ear etc.
II) Os cordis is a cartilage bone.
III) Adjacent myocardial cells are joined by gap junctions.
IV) Nissl bodies represent the smooth endoplasmic reticulum.
Identify the correct statements.

Which is the largest bone of middle ear

In humans, the tympanic membrane (eardrum) separates the tympanic cavity from

Which part of the human ear plays no role in hearing as such but otherwise is very much required?

In ear, the membranous labyrinth is filled with fluid called

A teenage girl presents for evaluation of hearing loss in her right ear. She has a history of at least episodes of otitis media as a child; at least one time she perforated her eardrum. Her hearing loss is most likely due to

High frequency sound waves vibrate the basilar membrane

Scala vestibuli and scala media contain respectively

Sound is amplified by the

Match the following columns and select the correct option.
Column-I | Column-II | ||
(a) | Organ of Corti | (i) | Connects middle ear and pharynx |
(b) | Cochlea | (ii) | Coiled part of the labyrinth |
(c) | Eustachian tube | (iii) | Attached to the oval window |
(d) | Stapes | (iv) | Located on the basilar membrane |
