Solution:

Involuntary actions:

1. Involuntary activities are activities which are not constrained by our will.

2.They are associated with working of inward body part

3.example: breathing, heartbeat, and so on

4.They are constrained by medulla of rear cerebrum.

Reflex activities:

1.Sudden action in response to something in the environment is called reflex action.

2.They are associated with reaction of upgrades.

3.example Closing the eyes, when splendid light is engaged.

4.They are by and large constrained by spinal line.