Q7 of 61 Page 58

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

The fore-brain is the main thinking part of the brain. Separate areas of the fore-brain are specialised for hearing, smell, sight and so on. Many of the involuntary actions are controlled by the mid-brain and hind-brain. Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla in the hindbrain. Cerebellum controls posture and balance of the body.

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

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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.

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Posture and balance of the body is controlled by

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Spinal cord originates from