Space between cornea & lens is :-
Important Questions on Nervous System
Match the following columns and select the correct option:-
| Column | column | ||
| (a) | Rods and cones | (i) | Absence of photoreceptor cells |
| (b) | Blind spot | (ii) | Cones are densely packed |
| (c) | Fovea | (iii) | Photoreceptor cells |
| (d) | Iris | (iv) | Visible coloured portion of the eye |
(i) The rods contain a purplish-red protein called the rhodopsin.
(ii) The photopigments are embedded in the membrane discs of the inner segment.
(iii) Retinal is a derivative of vitamin A.
(iv) Light induces dissociation of the retinal from opsin resulting in changes in the structure of the opsin.
Which statement is CORRECT regarding blind spot in human eye?
It ___________.
Draw a neat diagram of the vertical section of the eyeball of human eye and label the following parts:
(a) Choroid (b) Optic nerve (c) Iris (d) Yellow spot
Match the following columns and select the correct option.
| Column-I | Column-II | ||
| (a) | Organ of Corti | (i) | Connects middle ear and pharynx |
| (b) | Cochlea | (ii) | Coiled part of the labyrinth |
| (c) | Eustachian tube | (iii) | Attached to the oval window |
| (d) | Stapes | (iv) | Located on the basilar membrane |
Observe the given steps related to the experience of taste and arrange them properly.
- Impulses reach the brain through the nerves.
- The taste detecting chemoreceptors are stimulated.
- The substances reach the taste buds through saliva.
- Substances responsible for taste dissolves in saliva.
- Forms the experience of taste.
- Impulses form in the chemical receptors.
Draw a neat diagram of the vertical section of the eyeball of human eye and label the following parts:
(a) Choroid
(b) Optic nerve
(c) Iris
(d) Yellow spot
Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence beginning with the first word that is underlined:
Conjunctiva, Yellow spot, Pupil, Vitreous Humour, Aqueous Humour.
