Q. No.Vitreous humor is
(1) Thin watery fluid
(2) Thick watery fluid
(3) Transparent gel
(4) Translucent gel
(1) Thin watery fluid
(2) Thick watery fluid
(3) Transparent gel
(4) Translucent gel
These are events of mechanism of vision. Arrange them in order.
a. Light rays are focussed on retina
b. Dissociation of the retinal and of opsin
c. Generation of impulses in rods and cones
d. Changes in the structure of the opsin
e. Generation of potential difference
f. Change in membrane permeability
g. Transmission of action potential by the optic nerves to the visual cortex area of the brain
h. Generation of action potential in photoreceptors
i. image formation in retina and recognition based on earlier memory and experience.
(1) a-c-b-d-f-e-h-g-i
(2) a-b-c-d-e-f-g-h-i
(3) b-c-d-e-f-i-g-a-h
(4) b-d-c-f-g-i-a-e-h
Opsin….a…
Retinal…...b…..
(1) A protein, a ketone of vitamin A
(2) A glycoprotein, an aldehyde of vitamin A
(3) A protein, an aldehyde of vitamin A
(4) A glycoprotein, a ketone of vitamin
Which of the following sensory function/s is/are performed by ears?
(1) Hearing
(2) Maintenance of body balance
(3) Vision
(4) More than one options are correct
Which of the following is not a section of ear on the basis of anatomic criteria?
(1) Outer ear
(2) Middle ear
(3) Inner ear
(4) Tympanic membrane
Which of the following is not a part of external ear?
(1) Pinna
(2) Auditory Meatus
(3) Auditory canal
(4) Tympanic membrane
Which of the following will have hairs and wax secreting glands in human ear?
(1) Pinna
(2) Meatus
(3) Both A and B
(4) Tympanic membrane
The tympanic membrane
(1) Is composed of connective tissues covered with skin outside and with mucus membrane inside
(2) Is composed of connective tissue with mucus membrane outside and skin inside
(3) Is composed of connective tissue with mucus membrane on both the side
(4) Is composed of connective tissue with skin on both the side
Incus is not
(1) An ear ossicle
(2) Present in middle ear
(3) Situated in between Malleus and Stapes
(4) Increases the efficiency of transmission of light waves to the inner ear
Which of the following is not true about ear ossicles?
(1) Malleus, Incus and Stapes
(2) Ear ossicles increase the efficiency of transmission of sound waves to the inner ear.
(3) Malleus is attached to the tympanic membrane of cochlea
(4) Stapes is attached to the oval window of the cochlea
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