What is the Difference Between a Reflex Action and Walking, What in Text Question Chapter 7 Control and Co-ordination

In text questions of page no. 119

Q. No. 1: What is the difference between a reflex action and walking?
Ans:  A reflex action is voluntary action which is a rapid and automatic response to stimuli. While walking is a voluntary action which requires our thinking and in our control.

Q. No. 2: What happens at the synapse between two neurons?
Ans: A synapse is the gap between the two neurons. At synapse the electrical signals converted into chemicals that can easily cross over the gap and pass on to the next neurons where it again converted into electrical signals.

Q. No. 3: Which part of the brain maintains posture and equilibrium of the body?
Ans: Cerebellum, which is a part of hindbrain and is responsible for maintaining posture and equilibrium of the body.

Q. No. 4: How do we detect the smell of an agarbatti (incense stick)?
Ans: when the smell of the incense stick reaches to our nose then the olfactory receptors present in our nose detects it send this information in fore brain in the form of electrical signals. Fore brain interprets this information as the smell of incense stick where it is already stored.

Q. No. 5: What is the role of the brain in reflex action?
Ans: Reflex actions are sudden responses. It is involuntary action which does not involve thinking. For example, when we touch a hot object, we withdraw our hand immediately without thinking.  The sensory nerves that detect the heat are connected to the nerves that move the muscles of the hand. Such a connection of detecting the signal from the nerves (input) and responding to it quickly (output) is known as reflex arc. Reflex arcs are formed in the spinal cord and the information reaches the brain and the brain responses to it.

Reflex Arc