Inner Ear

Q. Choose the correct sequence based on transmission of the sound waves from the outer ear to the brain.

1. Pinna → tympanic membrane → auditory canal → cochlea → malleus → incus → stapes → auditory nerve
2. Pinna → malleus → incus → stapes → auditory canal → tympanic membrane → cochlea → auditory nerve
3. Pinna → cochlea → tympanic membrane → auditory membrane → auditory canal → incus → malleus → stapes → cochlea → auditory nerve
4. Pinna → auditory canal → tympanic membrane → malleus → incus → stapes → cochlea → auditory nerve

Q.

The space inside the membranous labyrinth is filled with a fluid named perilymph.

1. True

2. False

Q.

With reference to the human ear, answer the questions that follow:
(a) Give the technical term for the structure found in the inner ear.
(b) Name the three small bones present in the middle ear. What is the biological term for them collectively?
(c) Name the part of the ear associated with (l) static balance (2) hearing (3) dynamic balance.
(d) Name the nerve, which transmits messages from the ear to the brain.

Q.

Draw a labelled diagram of the inner ear. Name the part of the inner ear that is responsible for static balance in human beings.

Q.

Anvil is also known as ___.

1. Incus

2. Organ of corti

3. Mallet

4. Stapes

Q.

Internal ear is filled with:

1. Perilymph

2. Endolymph

3. Lymph

4. Vitreous Humor

Q.

The hearing is controlled by temporal lobes.

1. Cerebellum

2. Cerebrum

Q.

Where are the following located? Briefly mention the function of each :
(a) Oval window

(b) Cochlea

(c) Semicircular canals

(d) Utriculus

Q.

Differentiate between dynamic balance and static balance.

Q.

What structure in your ear help to maintain a sense of equilibrium?

1. Sensory cells of the organ of corti

2. Sensory crista of the ampulla

3. membrane of cochlea

4. Outer membrane of cochlea

Q.

State the exact location of the incus.

Q.

Which part of the ear amplifies the vibrations of the eardrum?

Q.

Part of ear concerned with hearing is_________

Q.

Write one function of the membranous labyrinth.

Q. The malleus is a hammer-shaped ear bone.

1. True
2. False

Q.

Which of the following is/are the main functions of the internal ear?

1. Hearing and Vision

2. Hearing and Balancing

3. Smell and Balancing

4. Hearing alone

Q.

Perilymph or endolymph (which one surrounds the organ of corti)

Q.

Fill in the blanks with correct words.

_________ is also known as the external ear.

Q.

Which part of our ear is shaped like a snail shell ?
(a) Semi-circular canals (b) Cochlea
(c) Stapes (d) Eustachian tube

Q.

Where is the organ of Corti located in the ear?

1. Internal ear

2. Nasal chamber

3. Aqueous chamber

4. Middle ear

Q.

What is the human ear? What are its part?

Q.

Statement 1: The smallest bone in the human body is incus.

Statement 2: The part of the inner ear that helps in hearing is cochlea.

1. Statement 1 is true but statement 2 is false

2. Both the statements are false

3. Statement 1 is false but statement 2 is true

4. Both the statements are true

Q. Identify the sequence in which the sound vibrations reach the brain:
$\begin{array}{cc}\text{Parts}& \text{Function}\\ \left(a\right)\text{External ear}& \left(i\right)\text{Amplifies the vibrations received on the tympanic membrane.}\\ \left(b\right)\text{Middle Ear}& \left(ii\right)\text{Converts the vibrations into nerve impulses and sends them to brain.}\\ \left(c\right)\text{Inner Ear}& \left(iii\right)\text{Directs the sound waves towards the tympanic membrane.}\end{array}$

1. a-i, b-iii, c-ii
2. a-iii, b-i, c-ii
3. a-ii, b-iii, c-i
4. a-ii, b-i, c-iii

Q.

Give the technical term for the structure found in the inner ear.

Q. Draw a labelled diagram of the inner ear. Name the part of the inner ear that is responsible for static balance in human beings.

Q.

How does ear maintain balance in humans?

Q.

State the exact location of the following structure-

Cochlea.

Q.

Choose the correct option-

A gymnast is able to balance his body upside down even in the total darkness because of?

1. Vestibular apparatus

2. Organ of Corti

3. Cochlea

4. Tectorial membrane

Q.

Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence.

Example: Large intestine, Stomach, Mouth, Small intestine, Oesophagus.

(a) Cochlea, Malleus, Pinna, Stapes, Incus.

Q.

Hearing is controlled by

1. Cerebellum

2. Cerebrum

3. Temporal lobes

4. Hypothalamus