Which of the following statements are true?

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

2. Sensory neurons carry signals from spinal cord to muscles.

3. Motor neurons carry signals from receptors to spinal cord.

4. The path through which signals are transmitted from a receptor to a muscle or a gland is called reflex arc.

In a neuron, conversion of electrical signal to a chemical signal occurs at/in

Which is the correct sequence of the components of a reflex arc?

Which of the following statements are true about the brain?

1. The main thinking part of brain is hind brain.

2. Centres of hearing, smell, memory, sight, etC. are located in forebrain.

3. Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla in the hindbrain.

4. Cerebellum does not control posture and balance of the body

Posture and balance of the body is controlled by