- Our body is able to respond to various different stimuli (signals or actions) of the environment on us
- Cells of the nervous tissue are responsible for transmitting these signals quickly from one place of the body to another.
- The brain, spinal cord and nerves form the nervous system and they are all composed of nervous tissues
- The cells are called nerve cells or neurons . One cell can be even 1 metre long.
|
PART |
DETAILS |
|
Dendrites |
Branched structure that collects information from previous neuron and passes on to the cell body or soma of neuron |
|
Cell body or Soma |
It contains the nucleus and other organelles like mitochondria, endoplasmic reticulum, Golgi body etc. |
|
Axon |
Tube-like structure that carries information from the cell body to the nerve endings |
|
Nerve endings |
The end of the axon where the nerve terminates. |
- The nerve cells collectively make up the nerve .
- The signals that pass through the nerves called nerve impulses allow us to move our muscles as per our will
- The nerves and muscles together enables animals to move and respond to stimuli rapidly
