Question

Answer the questions:

1) What happens at the synapse between two neurons?

2) Which part of the brain maintains posture and equilibrium of the body?

3) How do we detect the smell of an agarbatti (incense stick)?

4) what is the role of the brain in reflex action?

Answer 1

1)
A synapse is the gap between the two neurons. At synapse the electrical signals are converted into chemicals that can easily cross over the gap and pass on to the next neurons where it again converted into electrical signals.

2)
Cerebellum, which is a part of hind brain and is responsible for maintaining posture and equilibrium of the body.

3)

When the smell of the incense stick reaches our nose, then the olfactory receptors present in our nose detect it send this information to the fore brain in the form of electrical signals. Fore brain interprets this information as the smell of incense stick where it is already stored.

4)
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 and responding to it quickly is known as reflex arc. Reflex arcs are formed in the spinal cord and the information reaches the brain and brain responses to it.