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प्रश्न
Draw the structure of a neuron.
उत्तर
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संबंधित प्रश्न
Compare and contrast nervous and hormonal mechanisms for control and coordination in animals.
Draw a labelled diagram of a neuron.
What does the central nervous system in humans consist of? What is the job of the central nervous system?
Multiple choice question. Tick (✓) the correct choice:
The coloured part of the eye is called
- retina
- iris
- lens
- pupil
Name the following:
Five sense organs of human beings and the sensation perceived by each one.
State whether the following statement is true (T) or false (F):
Each neuron consists of three parts called cell body, cyton, and axon.
Define the following:
Neuron
Name the following:
The peripheral matter of the brain.
Match the terms of column I with those of column ll
| Column l | Column ll |
| (i) Lens | (a) Adjustment of light rays |
| (ii) Lachrymal gland | (b) Vision |
| (iii) Olfactory epithelium | (c) Secretion of tear |
| (iv) Cochlea | (d) Balance of the body |
| (v) Semicircular canal | (e) Hearing |
| (vi) Eyes | (f) Smell |
Where is this located?
Effector organs
Choose the correct answer.
Man has ______ pairs of spinal nerves.
What are the functions of proprioceptors?
Give Technical Term:
The chemical messenger by which the nerve impulse travels from one neuron to the other.
Complete the following sentence with appropriate word :
A bundle of axons enclosed in a tubular sheath is called _________.
Short answer question
Rakesh got hurt on his head when he fell down from his motorbike. Which inner membranes must have protected his brain? What other roles do they have to play?
Explain the following in short.
What is a ganglion?
The brain, the spinal cord and nerves form the nervous system.
Identify the CORRECT sequence of meninges. (From inside to outside)
Identify the labels (i- iii) in the T.S. of the spinal cord.
Think of situations where receptors do not work properly. What problems are likely to arise?
