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Question
Give Reason:
The spinal cord and brain are called the central nervous system.
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Solution
Because they give rise to all the nerves and control all the actions of the body.
RELATED QUESTIONS
The neuron which carries a message for action to a muscle or gland is known as a ______ neuron.
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.
Fill in the blank:
Outer protective layer of skin, called epidermis is made up of ________ tissue.
State whether the following statement is true (T) or false (F):
Retina is present on the outer surface of the eye.
Given alongside is the diagram of a neuron. Name the parts numbered 1-5.
- ............................................................................................... .
- ............................................................................................... .
- ............................................................................................... .
- ............................................................................................... .
- ............................................................................................... .
State whether the following statement is true (T) or false (F):
Each neuron consists of three parts called cell body, cyton, and axon.
Describe the structure and location of various taste buds.
Give Technical Term:
The part of the central nervous system in which the gray matter is located on the outer side and the white matter on the inner side.
Choose the Odd One Out:
Stimulation of nerves of the sympathetic nervous system ______.
