Question:
1. Label the parts a, b, c and d and show the direction of electrical signals in the figure. (CBSE 2010)
2. Draw the figure shown here and label motor neuron, relay neuron and spinal cord. What is the name of this connection ?
(CCE 2011)
Solution:
- a – Sensory neuron.
b – Spinal cord (CNS).
c – Mortor neuron.
d – Effector (muscle in arm) - Name — Reflex arc.
Direction :- Receptor (hand) to spinal cord through sensory neuron,
- Sensory neuron to motor neuron through Spinal cord to effector through motor neuron.