Advertisements
Advertisements
प्रश्न
State the Location of:
Lacrimal gland
Where is the following located?
Lacrimal gland
उत्तर
Lacrimal glands are located at the upper sideward portion of the orbit.
APPEARS IN
संबंधित प्रश्न
Write the function of retina in human eye.
What changes take place in the shape of eye-lens:
when the eye is focused on a distant object?
What are rods and cones in the retina of an eye? Why is our night vision relatively poor compared to the night vision of an owl?
The human eye possesses the power of accommodation. This is the power to:
(a) alter the diameter of the pupil as the intensity of light changes
(b) distinguish between lights of different colours
(c) focus on objects at different distances
(d) decide which of the two objects is closer.
The descriptions of five kinds of images are given below:
(a) diminished and virtual
(b) enlarged and real
(c) enlarged and erect
(d) real and inverted
(e) virtual and the same size
Which one of these describes the image formed:
(i) on the retina of the eye?
(ii) by a magnifying glass?
(iii) by a convex driving mirror on a car?
(iv) by a plane mirror?
(v) on the screen of a slide projector?
What shape are your eye-lenses:
when you look at your hand?
What is a lacrimal gland?
Define the following:
Blind spot
What are the functions of tears?
Name the following:
The area where the image is formed but not seen by our eye is termed as.
Complete the following sentence with appropriate Word
The photoreceptor cells of the retina sensitive to colour are:
Complete the following sentence with appropriate Word
The aperture in the eye through which light enters is the:
Write the function of the human eye and label parts of the figure given below.
The pigmented circular area seen in front of the eye:
At noon the sun appears white as
Match the following:
| Column - I | Column - II |
| 1. Retina | a. Path way of light |
| 2. Pupil | b. Far point comes closer |
| 3. Ciliary muscles | c. near point moves away |
| 4. Myopia | d. Screen of the eye |
| 5. Hypermetropia | e. Power of accommodation |
Given below is a cross section of the human eye. Match the structures marked (a) to (e) with their correct functions:
Example: (f) - 6. Holds the lens in position
| Cross section of Human Eye | Functions | |
 |
1. | Protects retina |
| 2. | Regulates the size of the pupil | |
| 3. | Alters the shape of the lens | |
| 4. | Keeps the lens moist | |
| 5. | Transmits nerve impulses to brain | |
| 6. | Holds the lens in position |
With reference to human eye answer the question that follow:
Name the part of the eye associated with the regulation of the size of pupil.
The figure given below refers to the vertical section of the eye of a mammal. Study the figure carefully and answer the following questions.
 |
- Label the guidelines shown as 1 to 10.
- Write one important role of parts shown as 3 and 7.
- Write one structural difference between the parts shown as 9 and 10.
- Mention one functional difference between the parts shown as 6 and 8.
