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प्रश्न
Give Reason:
The spinal cord and brain are called the central nervous system.
उत्तर
Because they give rise to all the nerves and control all the actions of the body.
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संबंधित प्रश्न
Which signals will get disrupted in case of a spinal cord injury?
The human brain can be broadly divided into three regions. name these three regions.
What is voluntary nervous system? Explain the working of the voluntary nervous system with an example.
The human body contains a large number of cells A which are very long and branched, and look like electric wires. The longest branch of this cell is B whereas there are many small branches C. Any two A cells do not join to one another completely in the human body. There is a microscopic gap D between every pair of adjacent A cells through which electric impulses can pass by the release of a chemical substance.
(a) What are cells A?
(b) What is the name of (i) branch B, and (ii) branches C?
(c) What is the microscopic gap D known as?
(d) What is the function of cells like A in the human body?
(e) The cells A are of three types. name the three types.
Multiple choice question. Tick (✓) the correct choice:
The coloured part of the eye is called
- retina
- iris
- lens
- pupil
Describe three kinds of nerves, giving the example of each.
State whether the following statement is true (T) or false (F):
Each neuron consists of three parts called cell body, cyton, and axon.
Name the following:
Cavity in which brain is situated.
Mention, if the following statement is True or False
Spinal nerves and cranial nerves constitute the central nervous system.
The outermost of the three cranial meninges are ______
