Question

Reflex arc is formed by
(a) brain-spinal cord-muscles
(b) receptor-spinal cord-muscles
(c) muscles-receptor-brain
(d) muscles-spinal cord-receptor

Answer 1

Answer:

b)receptor- spinal cord -muscles.

As when the receptor receives the stimuli. instead of going to brain and get command by( it may take a lot of time )it reaches the relay neuron present in the spinal cord. From there it gets command and works accordingly

Answer 2

Reflex Arc

➡Path followed by an impulse in reflex action is known as reflex arc. Reflex always travel in one direction. The direction taken by nerve impulse and response in a reflex action is from the receptor organ

In reflex action, the reflex arc is formed by is :-

▪(a) brain, spinal cord, muscle

▪(b) receptor, muscle, spinal cord

▪(c) muscle, receptor, brain

✔(d) receptor, spinal cord, muscle