Correct option is C
Nerve cells, also known as neurons, are the structural and functional units of the nervous system. These specialized cells are responsible for transmitting signals throughout the body.
A typical nerve cell has:
Dendrites – small branch-like structures that receive signals from other neurons or sensory receptors.
Axon – a long projection that transmits signals away from the cell body to muscles, glands, or other neurons.
This structure allows for rapid communication within the body and is essential for all functions related to control and coordination.
• Neurons can be sensory, motor, or interneurons based on their function.
• The axon may be covered with a myelin sheath which increases the speed of nerve impulse transmission.
• The synapse is the junction between two neurons where signal transmission occurs via neurotransmitters.
• The nerve impulse is an electrochemical signal that travels along the axon.
• Neurons do not divide like other cells and are mostly irreplaceable.
