Nocturnal animals like owl move freely during night because they have:
A.Only cones and no rods in their retina
B.Only rods and no cones in their retina
C.Deficiency of vitamin-A in their body
D.Adjustible pupil
Category: Receptors Mcqs
Cochlear apparatus in man is divided into:
A.Scala vestibuli
B.Scala tympani
C.Pars scala media
D.None of these
Which of the following structures of our eye will be affected when a very bright source of light is put suddenly before our eyes:
A.Dalators or iris
B.Sphincters of iris
C.Both of these
D.None of these
Stimuli falling from a distant source on our eyes are:
A.Light and sound waves
B.Light only
C.Light, sound and odour
D.Light and sound
Cohlea of our ear and retina of our eye are examples of:
A.Neuroepithelial receptors
B.Epithelial receptors
C.Neuronal receptors
D.None of these
Which of the following structures connect the middle ear with pharynx:
A.Eustachian tube
B.Fallopian tube
C.Both of these
D.None of these
Sense organs concerned with equilibrium are located in:
A.Nasal chamber
B.Internal ears
C.Medulla oblongata
D.Eyes
Eustachian canal in the ear helps to:
A.Equalize the pressure of air in the middle and external ear
B.Equalize the pressure of air in middle and internal ear
C.Facilitate the animal in hearing
D.Vibrate the tympanum
Cavity of vitreous humour is:
A.Behind the lens
B.Infront of the lens
C.Between choroids and retina
D.Between sclerotic and choroid
Tympanic cavity is connected to auditory capsule through:
A.Fenestra ovalis
B.Fenestra rotunda
C.Both of these
D.None of these
