EASY
10th Tamil Nadu Board
IMPORTANT
Earn 100

With a neat labelled diagram explain the structure of a neuron.

Important Questions on Nervous System

HARD
10th Tamil Nadu Board
IMPORTANT
Illustrate the structure and functions of brain.
HARD
10th Tamil Nadu Board
IMPORTANT
What will you do if someone pricks your hand with a needle? Elucidate the pathway of response with a neat labelled diagram.
HARD
10th Tamil Nadu Board
IMPORTANT
Describe the structure of spinal cord.
HARD
10th Tamil Nadu Board
IMPORTANT
How nerve impulses are transferred from one neuron to next neuron?
MEDIUM
10th Tamil Nadu Board
IMPORTANT
Classify neurons based on its structure.
EASY
10th Tamil Nadu Board
IMPORTANT

'A' is a cylindrical structure that begins from the lower end of medulla and extend downwards. It is enclosed in bony cage 'B' and covered by members 'C'. As many as 'D' pairs of nerves arise from the structure 'A'.

(i) What is 'A'?
(ii) Name (a) bony cage 'B' and (b) membranes 'C'.
(iii) How much is D?

EASY
10th Tamil Nadu Board
IMPORTANT

Our body contains a large number of cells 'L' which are the longest cells in the body. L has a long and short branch called 'M' and 'N' respectively. There is a gap 'O' between two 'L' cells, through which nerve impulse transfer by the release of chemical substance 'P'.

(i) Name the cells L.
(ii) What are M and N?
(iii) What is the gap O?
(iv) Name the chemical substance P.