Biology
Where are the following located? State their main functions:
(a) Yellow spot
(b) Lacrimal gland
(c) Organ of Corti
(d) Eustachian canal
(e) Incus
Sense Organs
126 Likes
Answer
(a) Yellow spot lies at the back of the eye almost at the centre on the horizontal axis of the eyeball. It is the region of brightest vision and also of colour vision.
(b) Lacrimal glands are located at the upper sideward portion of the eye orbit. They pour the secretion in the form of tears which serves as a lubricant, antiseptic and even washes away dust particles from the eyes.
(c) Organ of Corti is present in the middle cochlear canal of the ear. It helps in hearing.
(d) Eustachian canal connects middle ear to throat. It balances air pressure on either sides of tympanum.
(e) Incus is located in middle ear. It helps in transmission of sound from external to internal ear.
Answered By
64 Likes
Related Questions
Draw a labelled diagram of the inner ear. Name the part of the inner ear that is responsible for static balance in human beings.
Have a look at the posture of this girl who is reading a book and answer the questions which follow:
(a) Name the problem she is facing.
(b) What are the two conditions shown in sections A and B of the eye as applicable to her?
(c) What kind of reading glasses does she need ?
The figure given below shows the principal parts of a human ear. Study the diagram and answer the following questions.
(a) Label the parts 1 to 8.
(b) State the role of parts 6, 7 and 8.
(c) Why is it harmful to use a sharp object to remove ear wax? Mention the number and name of the part involved.
Given below is the internal structure of the human ear. Match the structures marked (a) to (e) with their correct function.
