The region of the vertebrate eye, where the optic nerve passes out of the retina, is called the ______.

Name the small tubular gap structure between the two neurons

What is the nature of nerve impulse?

Which part of the war determines the pitch of a sound?

Which is the bluish (pigmented) layer present beneath the sclera?

Give the name of the nervous tissues, which form the spinal cord.

What is the role of afferent nerve fibres in the nervous system?

Give the name of the passage between middle ear and pharynx.

Which muscles control the size of pupil?

Which cells of retina enable us to see coloured objects around us?

How do the ionic gradients across the resting membrance can be maintained?

Compare the following "Resting potential and action potential"

Arrange the following n the order of reception and transmission of sound wave from the ear drum Cochlear nerve, external auditory canal, ear drum, stapes incus, malleus, cochlea

Nervous system and computers share certain common features. Comment in five lines. (Hint: CPU, input-output devices).

Describe the functions of limbic system?

Differentiate between Dendrites and axons

Answer briefly
(i) How do you perceive the colour of an object?
(ii) Which part of our body helps us in maintaining the body balance?
(iii) How does the eye regulate the amount of light that falls on the retina?

Distinguish between cranial nerve and spinal nerve in human.

The major parts of the human neural system is depicted below.Fill in the empty boxes with appropriate words.

Answer the following:
(a) Which part of the human brain is the most developed?
(b) Which part of our central neural system acts as a master clock?

Explain the following processes:
(a) Polarisation of the membrane of a nerve fibre
(b) Depolarisation of the membrane of a nerve fibre
(c) Transmission of a nerve impulse across a chemical synapse

Draw labelled diagrams of the following:
(a) Neuron
(b) Brain

Write short notes on the following:
(a) Neural coordination
(b) Forebrain
(c) Midbrain
(d) Hindbrain
(e) Synapse