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Sense Organs

Description: Mutation Human Physiology
Number of Questions: 15
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Tags: Mutation Human Physiology
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Which of the following animals posseses monocular vision?

  1. Man

  2. Rabbit

  3. Dog

  4. Snake


Correct Option: B
Explanation:

Rabbits possess monocular vision.

Where is the organ of corti located?

  1. In the cavity of scala tympani

  2. In the cavity of scala media

  3. Helicotrema

  4. In the cavity of scala vestibuli


Correct Option: B
Explanation:

The organ of corti is located in the cavity of scala media. #

Which is the most specific function of the utricle?

  1. It is a component of balancing apparatus.

  2. Detects head tilt in a horizontal plane

  3. Detects head tilt in a vertical plane

  4. Detects linear acceleration


Correct Option: B
Explanation:

Head tilt in horizontal plane is detected by the utricle.

In which of the following conditions is there a variation or disturbance in the shape of the cornea?

  1. Myopia

  2. Hypermetropia

  3. Astigmatism

  4. Cataract


Correct Option: C
Explanation:

Astigmatism is caused by variation or disturbance in the shape of the cornea.

What does loss of flexibility of the lens lead to?

  1. Myopia

  2. Hypermetropia

  3. Presbyopia

  4. Astigmatism


Correct Option: C
Explanation:

Presbyopia is caused due to the loss of flexibility of the lens.

Which structure seprates the external ear from the middle ear?

  1. Succlulus

  2. Tympanum

  3. Reissner's membrane

  4. Basilar membrane


Correct Option: B
Explanation:

Tympanum or ear drum seprates the middle ear from the external ear.

According to which theory the organ of corti transmits sound waves to the cochlear nerve without any change?

  1. Harper resonance theory

  2. Microphone theory

  3. Telephone theory

  4. Mobile theory


Correct Option: C
Explanation:

According to the telephone theory, the organ of corti transmits sound waves to the cochlear nerve without any change.

Which canal connects the tympanic cavity to the pharynx?

  1. Tympanic canal

  2. Vestibular canal

  3. Eustachian canal

  4. Auditory canal


Correct Option: C
Explanation:

Eustachian canal is a narrow canal connecting the tympanic cavity to the pharynx. It maintains the air pressure in the tympanic cavity. Its opening into the pharynx is guarded by a valve.

Which cranial nerve innervates the inner ear?

  1. 7th

  2. 6th

  3. 8th

  4. 2nd


Correct Option: C
Explanation:

8th cranial nerve innervates the internal ear.

Which is the condition in which image is formed beyond retina?

  1. Myopia

  2. Hypermetropia

  3. Astigmatism

  4. Presbyopia


Correct Option: B
Explanation:

In hypermetropia, the image is formed beyond the retina.

Where are the Boettcher cells located?

  1. Succulus

  2. Utriculus

  3. Organ of corti

  4. Ampulla


Correct Option: C
Explanation:

Boettcher cells are present in organ of corti as supporting cells.

What does an increase in the pressure of eyes lead to?

  1. Cataract

  2. Glaucoma

  3. Hypermetropia

  4. Conjunctivitis


Correct Option: B
Explanation:

Glaucoma is a term describing a group of ocular (eye) disorders that result in optic nerve damage, often associated with increased fluid pressure in the eye.

Which lens is used for correcting myopia?

  1. Concave

  2. Convex

  3. Cylindrical

  4. Bifocal


Correct Option: A
Explanation:

Myopia is corrected by using a concave lenses.

In which of the following conditions does the eye lens become opaque?

  1. Glaucoma

  2. Myopia

  3. Cataract

  4. Presbyopia


Correct Option: C
Explanation:

A cataract is a clouding of the lens inside the eye which leads to a decrease in the vision. In cataract, the lens becomes opaque.

What is the sequence of ossicles in the middle ear?

  1. Stapes-malleus-incus

  2. Incus-malleus-stapes

  3. Malleus-incus-stapes

  4. Incus-stapes-malleus


Correct Option: C
Explanation:

Malleus is attached to the ear drum and incus is in the middle while stapes is attached to fenestra ovalis.

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