Advertisements
Advertisements
प्रश्न
Draw a labelled diagram of the following:
Brain
उत्तर
APPEARS IN
संबंधित प्रश्न
Distinguish between Impulse conduction in a myelinated nerve fibre and unmyelinated nerve fibre
Receptor, Spinal cord, Effector, Motor neuron, Sensory neuron.
Name the following :
The layer of the eyeball that forms the transparent Cornea
Mention the exact location of Epididymis
Write the function of medullary sheath.
Answer the following questions briefly:
How are the cytons and axons placed in the brain and the spinal cord?
Name the following:
Structural and metabolic unit of nervous tissue.
Name the following:
Neuron only with axon.
Write whether the following is true or false:
Neurotransmitters are released on activation.
Nerve cells do not possess ______
Our body contains a large number of cells ‘L’ which are the longest cells in the body. L has long and short branches 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?
The structural and functional units of the nervous system is ______.
Assertion: Impulse travels from dendrite to cell body and then along the axon to its end.
Reason: Information acquired at the end of the dendrite tip of a nerve cell sets of an electric impulse.
In a neuron, conversion of electrical signal to a chemical signal occurs at/in
Chemicals which are released at the synaptic junction are called ______.
Write one word for the following:
The kind of nerve carrying impulses from the brain to a gland or muscle.
The basic structural and functional unit of brain is ______.
Any factor that can bring a change in the body of an organism is called ______.
Give reason:
Neurotransmitters are broken down by an enzyme just after passing an impulse from one neuron to the other.
