MBBS / BDS Medical Entrance Examination - MCQs on Sense Organs

# Acoustic spot in each ampulla of human ear is known as:
A. Otolith
B. Organ of Corti
C. Crista
D. Macula

# In internal ear, sensory pathces are situated in:
A. membranous labyrinth
B. cochlea
C. stapedial plate
D. Fenestra ovalis

# The disease caused by bacteria in human eye is known as:
A. Protanopia
B. Xerophthalmia
C. Glaucoma
D. Trachoma

# Organ of Corti cells are related to:
A. Sight
B. Hearing
C. Equillibrium
D. Taste

# Which part of the ear is responsible for hearing ?
A. Cochlea
B. Utricle
C. Saccule
D. Semicircular ducts

# Cristae is present in:
A. Semicircular canal
B. Vestibule
C. Cochlea
D. All

# The sensory neurons of a vertebrate retina are its:
A. Rods and cones
B. Ganglion cells
C. Amacrine cells
D. Bipolar cells

# Eustachian tube connects:
A. pharynx with middle ear
B. middle ear with external ear
C. middle ear with internal ear
D. external ear with internal ear

# Meibomian glands are present in:
A. ears
B. skin
C. eyes
D. lungs

# A person ( >55 years ) cannot see the near objects, the defect is:
A. Myopia
B. Hypermetropia
C. Presbyopia
D. Astigmatism

# In retina, yellow spot contains:
A. Rods and Cones
B. Rods only
C. Cones only
D. None

# Hensen's cells are found in:
A. Eye
B. Ear
C. Both of the above
D. Spleen

# Ceruminous glands are situated:
A. Around anus
B. In external auditory meatus
C. In eye lids
D. In arm pits

# A person who cannot see the near objects clearly is likely to use:
A. Convex lens
B. Concave lens
C. Bifocal lens
D. Cylindrical lens

# What are thigmoreceptors ?
A. Tactile hairs
B. Taste hair
C. Chemoreceptors
D. None

# Tear from eye is drained into:
A. Oral cavity
B. Nasal cavity
C. Ear
D. Maxillary Sinus

# Rods and cones assist to:
A. Focus light
B. Amplify light
C. Transduce light
D. Filter light

# Which is the correct sequence of transmission of vibrations from the air to the auditory nerve in mammal?
A. Ear bones, cochlea, tympanic membrane
B. Tympanic membrane, cochlea, ear bones
C. Cochlea, ear bones, tympanic membrane
D. tympanic membrane, ear bones, cohchlea

# Long sightedness is caused by:
A. Shortening of the eyeball
B. Decrease in focal length
C. Enlargement of eye ball
D. No change in focal length

# The enzyme that is present in tears is:
A. Lysozyme
B. Ptyline
C. Amylase
D. Lipase

# Organ of Corti lies inside the:
A. Tympanum
B. Scala vestibuli
C. Scala media
D. Scala tympani

# The part of the ear that distinguishes different pitches is the:
A. Organ of Corti
B. Tympanic membrane
C. Semicircular canal
D. Auditory nerve

# Meissner's corpuscles are loacted in:
A. Skin
B. Teeth
C. Nail
D. Hair

# Cochlea is mainly responsible for:
A. Balance only
B. Hearing only
C. Both balance and hearing
D. Perception of color

# Short sightedness or myopic vision is corrected by wearing:
A. Convex lens
B. Concave lens
C. Convex mirrors
D. Concave mirrors

# The tears of a healthy girl would have osmotic pressure isotonic to NaCl solution of:
A. 0.74 %
B. 0.90 %
C. 7.40 %
D. 9.00 %

# The focusing of lens is done by:
A. Ciliary muscle
B. Iris
C. Pupil
D. Sclera

# Which cell is used to see color ?
A. Rod cells
B. Cone cells
C. Corneal cells
D. Iris

# Point of greatest visual acuity is:
A. Macula lutea
B. Fovea centralis
C. Optic disk
D. Optic chiasm

# Tectorial membrane is present in:
A. ear of mammal
B. eye of mammal
C. ear of frog
D. eye of frog

# Yellow spot is found in:
A. Cones
B. Rods
C. Retina
D. Choroid

# The portion of head where most portions of ear lie is:
A. Occipital
B. Temporal
C. Parietal
D. Frontal

# All of the following structures are found in dermis except:
A. Blood vessels
B. Sebaceous glands
C. Sweat glands
D. Melanocytes

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