What are reflex action?give two example. Explain reflex arc.
Answers
Answer: reflex action is involuntary action . ex when you touch hot water then immediately remove your hand or yawning
Explanation:
Answer:
The sudden involuntary movement in a voluntary organ; in response to a stimulus; is called reflex action.
Examples of reflex action:
(a) Moving your hand away from a hot iron plate
(b) Blinking of eyes
Reflex Arc: The path of electrical impulse during a reflex action is called reflex arc. A reflex arc is composed of a sensory neuron, spinal cord, motor neuron and muscle. It involves following steps:
The sensory neuron picks signals from the stimulus and carries the signals to the spinal cord.
Spinal cord process the signals and sends message through the motor neuron.
Motor neuron transmits the signals to the effector muscle so that the muscle can take immediate action.