
A Neuron is the structural and functional unit of the nervous system. It consists of three main parts:
1. Cell body (Soma) – Contains the nucleus and cytoplasm.
2. Dendrites – Receive signals from other neurons.
3. Axon – Transmits impulses away from the cell body.
Functions of Neuron:
- It receives and transmits electrical and chemical signals.
- It helps in reflex actions and voluntary movements.
- It enables communication between different body parts and the brain.
Find the unknown frequency if 24 is the median of the following frequency distribution:
\[\begin{array}{|c|c|c|c|c|c|} \hline \text{Class-interval} & 0-10 & 10-20 & 20-30 & 30-40 & 40-50 \\ \hline \text{Frequency} & 5 & 25 & 25 & \text{$p$} & 7 \\ \hline \end{array}\]