Advertisements
Advertisements
प्रश्न
What are the three main parts of the membranous labyrinth.
उत्तर
The bony labyrinth is a membranous structure and is divided into three parts:
- The semicircular ducts
- Two sac like structures - the saccule and the utricle (in the vestibule)
- The cochlear duct (the only part of the ear involved in hearing)
APPEARS IN
संबंधित प्रश्न
Which one or more of the expressions in column II are appropriate for the items listed in column I? write the correct matching pairs-
| Column I | Column II |
| (i) The blind spot | (a) colour of the eye |
| (ii) the yellow spot | (b) shape of the lens |
| (iii) Ciliary muscle | (c) protective covering of the brain |
| (iv) Iris | (d) basic unit of brain |
| (v) Meninges | (e) free of rod cells |
| (f) vitreous humour | |
| (g) centre of the retina | |
| (h) no sensory cells |
Tear gland is also called ______.
Arrange and rewrite the terms in the group in the correct order to be in a logical sequence beginning with the term that is underlined:
Fovea, Lens, Cornea, Coniunctiva.
The antiseptic present in tears is ______.
State the functions of the following:
Eyelids
State the functions of the following:
Eyelashes
State the functions of the following:
Tears
Give the reason for the following:
Medicines dropped in the eye flow down into the nose.
Tears have an antiseptic property due to the presence of ______.
Define the following term:
Conjunctiva
Define the following term:
Lysozyme
