Chemicals which are released at the synaptic junction are called

Potential difference across resting membrane is negatively charged. This is due to differential distribution of the following ions.

Resting membrane potential is maintained by

The function of our visceral organs is controlled by

Which of the following is not involved in knee-jerk reflex?

An area in the brain which is associated with strong emotions is

Mark the vitamin present in rhodopsin

Human eyeball consists of three layers and it encloses

Wax gland present in the ear canal is called

The part of internal ear responsible for hearing is

The organ of corti is a structure present in

Rearrange the following in the correct order of involvement in electrical impulse movement.

Comment upon the role of ear in maintaining the balance of the body and posture.

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

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

During resting potential, the axonal membrane is polarised, indicate the movement of +ve and -ve ions leading to polarisation diagrammatically.

Name the structures involved in the protection of the brain.

Our reaction like aggressive behaviour, use of abusive words, restlessness etc. are regulated by brain, name the parts involved.

What do grey and white matter in the brain represent?

Where is the hunger centre located in human brain?

While travelling at a higher altitude, a person complains of dizziness and vomiting sensation. Which part of the inner ear is disturbed during the journey?

Complete the statement by choosing appropriate match among the following.

	Column I		Column II
A.	Resting potential	1.	Chemicals involved in the transmission of impulses at synapses.
B.	Nerve impulse	2.	Gap between the pre synaptic and post synaptic neurons.
C.	Synaptic cleft	3.	Electrical potential difference across the resting neural membrane.
D.	Neurotransmitters	4.	An electrical wave like response of a neuron to a stimulation.

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

What is the difference between electrical transmission and chemical transmission?

Neuron system and computers share certain common features. Comment in five lines.

If someone receives a blow on the back of neck, what would be the effect on the person's CNS?

What is the function described to Eustachian tube?

Label the following parts in the given diagram using arrow.

(a) Aqueous chamber (b) Cornea (c) Lens (d) Retina (e) Vitreous chamber (f) Blind spot

Explain the process of the transport and release of a neurotransmitter with the help of a labelled diagram showing a complete neuron, axon terminal and synapse.

Name the parts of human forebrain indicating their respective functions.

Explain the structure of middle and internal ear with the help of diagram.