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प्रश्न
Sclerotic layer or choroid layer.(Which one forms the Iris ?)
उत्तर
Choroid layer
APPEARS IN
संबंधित प्रश्न
Photoreceptor cells are present in __________.
(A) blind spot
(B) retina
(C) cochlea
(D) cornea
The ear ossicle which is attached to the tympanum.
Name the following:
The ear ossicle attached to the tympanum.
Note the relationship between the first two words and suggest the suitable word for the fourth place.
sound : ear drum :: Dynamic balance : ……
State whether the following statements are true (T) or false (F). If false, correct them by changing any one single word in each.
Deafness is caused due to rupturing of the pinna.
Mention if the following statement is true (T) or false (F) Give reason.
The auditory nerve is purely for perceiving sound
Where is the Cochlea located? Briefly mention its function.
With reference to the human ear, answer the question that follow:
Name the nerve, which transmits messages from the ear to the brain.
How could you convince a small child that when you speak, it is not necessary for air to travel from you mouth to the ear of listener?
Name the nerve which carries electrical impulses from the cochlea of ear to the brain.
Why should we not put a pin or pencil in our ears ?
The diagram alongside represents the structure of the human ear.
(i) Write the names of the parts labelled a to g.
(ii) State briefly the functions of the parts b, d, and g.
(iii) Name the main division of the ear.
(iv) Which is the smallest bone in the human body?
(v) What is labyrinth?
Mention, if the following statement is True or False
Cochlea of the ear is concerned with the sense of balance.
Mention, if the following statement is True or False
Deafness is caused due to the rupturing of the pinna.
State the Function:
Endolymph
Name the three ossicles of the middle ear.
The part of the ear that turns pressure variations into electrical signals is ______.
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Eyes: Photoreceptors :: Ears : ______.
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Ear pinna : Auricle :: Inner ear : ______.
The figure given below shows the principal parts of a human ear. Study the diagram and answer the following questions.
 |
- Label the parts 1 to 8.
- State the role of parts 6, 7 and 8.
- Why is it harmful to use a sharp object to remove ear wax? Mention the number and name of the part involved.
