Advertisements
Advertisements
प्रश्न
Differentiate between the following pair of terms:
Motor nerve and sensory nerve.
उत्तर
Motor nerve: It contains only motor neurons,
Example: Nerves going to the muscles of the eyeball.
Sensory nerve: It contains only sensoiy neurons.
Example: optic nerve of the eye
APPEARS IN
संबंधित प्रश्न
Draw a labelled diagram of the following:
Neuron
Differentiate between Myelinated and non-myelinated axons.
Mention the exact location of Hydathodes
Fill in the blank:
The neurons carrying impulses from the brain to the muscles are called _______________________.
How does an impulse travel across a synapse?
Differentiate between:
Rods and Cones.
Draw a labeled diagram of a myelinated neuron.
All of the following are associated with the myeline sheath except
‘A’ is a cylindrical structure that begins from the lower end of the medulla and extends downwards. It is enclosed in bony cage ‘B’ and covered by membranes ‘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?
Dendrons are the longest fibres that conduct impulses away from the cell body.
What are the different parts of the multipolar neuron?
Electrical impulse travels in a neuron from
What is the correct direction of flow of electrical impulses?
Write one word for the following:
Long thread-like part of the nerve cell.
Write one word for the following:
The kind of nerve carrying impulses from the brain to a gland or muscle.
Rearrange the following in correct sequence pertaining to what is given within brackets at the end.
Axon endings - Dendrites - Axon - Perikaryon - Dendron (Neuron structur)
Give reason:
Neurotransmitters are broken down by an enzyme just after passing an impulse from one neuron to the other.
The figure given below is the basic structural and functional unit of the human nervous system. Study the diagram and answer the following questions:
 |
- Write the technical term for the diagram.
- Name two organs of our nervous system where these cells are richly found.
- How are these cells significant for us?
- Name the cell organelle that is absent in these cells and how does it affect our body metabolism?
- Redraw the same figure and label the following Perikaryon, Axon, Dendrites, Myelin sheath and Node of Ranvier.
