Gr 9 NATURAL SCIENCES: CH 1.2 The nervous system

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What is the main function of the nervous system?

To regulate body temperature

To control the digestive system

To produce hormones

To transmit nerve impulses between different parts of the body (correct)

What is the peripheral nervous system (PNS)?

The sensory organs

The central nervous system

The spinal cord

The network of nerves that connect the CNS to the limbs and organs (correct)

What is the primary function of the brain?

To interpret sensory information (correct)

To regulate body temperature

To control the digestive system

To produce hormones

What is the function of the spinal cord?

To transmit signals between the brain and the rest of the body Signup and view all the answers

What is the function of sensory organs?

To collect information from the environment Signup and view all the answers

What do nerves transmit?

Electrical impulses Signup and view all the answers

What is the function of the eyes?

To detect light and enable vision Signup and view all the answers

What is the function of the ears?

To detect sound waves and enable hearing Signup and view all the answers

What is the function of the nose?

To detect airborne chemicals and enable the sense of smell Signup and view all the answers

What forms the central nervous system (CNS)?

The brain and spinal cord Signup and view all the answers

Which sense organ detects different flavors?

Tongue Signup and view all the answers

What is the function of the hypothalamus?

Regulating body temperature Signup and view all the answers

What is the result of damage to the brain or spinal cord?

Paralysis Signup and view all the answers

What is the function of olfactory receptors?

Detecting airborne chemicals Signup and view all the answers

What is the result of a stroke?

Death of brain cells Signup and view all the answers

What is the function of sensory receptors in the skin?

Detecting pressure, temperature, and pain Signup and view all the answers

What is the effect of substance abuse on the brain?

Permanent brain damage Signup and view all the answers

What is the function of photoreceptor cells in the retina?

Converting light into electrical signals Signup and view all the answers

What is the result of degenerative disorders?

Progressive degeneration of the nervous system Signup and view all the answers

What is the function of hair cells in the cochlea?

Converting sound waves into electrical signals Signup and view all the answers

What is the main pathway for transmitting signals between the brain and the rest of the body?

Nerves Signup and view all the answers

Which region of the brain controls thought, memory, and emotion?

Cerebrum Signup and view all the answers

What is the function of the spinal cord?

To transmit signals between the brain and the rest of the body Signup and view all the answers

What is the function of the eyes?

To detect light and enable vision Signup and view all the answers

What is the purpose of the nervous system?

To transmit nerve impulses between different parts of the body Signup and view all the answers

What is the function of sensory organs?

To collect information from the environment Signup and view all the answers

What is composed of different regions that control various functions?

Brain Signup and view all the answers

What is the function of the nasal cavity?

To detect airborne chemicals and enable the sense of smell Signup and view all the answers

What forms the peripheral nervous system?

Nerves Signup and view all the answers

What is the function of the nervous system in relation to the body's actions?

To transmit signals to and from different parts of the body Signup and view all the answers

Which part of the body receives signals about temperature, pressure, and pain?

Skin Signup and view all the answers

What is the role of neurons in the brain?

To send and receive electrical impulses Signup and view all the answers

What is the function of the auditory nerve?

To transmit electrical signals from the ear to the brain Signup and view all the answers

What is the result of a broken neck?

Paralysis Signup and view all the answers

What is the function of the optic nerve?

To transmit electrical signals from the eye to the brain Signup and view all the answers

What is the cause of permanent damage and loss of function in parts of the body?

All of the above Signup and view all the answers

What is the function of the hypothalamus?

To regulate body temperature Signup and view all the answers

What is the effect of substance abuse on the brain?

It causes significant damage to the brain Signup and view all the answers

What is the role of neurotransmitters?

To transmit electrical signals across synapses Signup and view all the answers

What is the result of damage to sensory organs?

Impaired ability to process sensory information Signup and view all the answers

What is the primary function of the nerves in the peripheral nervous system?

To transmit messages to and from the brain and spinal cord Signup and view all the answers

Which of the following is NOT a function of the brain?

Producing hormones Signup and view all the answers

What is the main difference between the central nervous system and the peripheral nervous system?

The CNS is responsible for controlling the body's functions, while the PNS connects the CNS to the limbs and organs Signup and view all the answers

What is the role of specialized cells in sensory organs?

To detect specific stimuli Signup and view all the answers

What is the primary function of the spinal cord?

To transmit signals between the brain and the rest of the body Signup and view all the answers

What is the result of damage to the central nervous system?

Permanent damage and loss of function in parts of the body Signup and view all the answers

What is the role of the brain in the nervous system?

To interpret sensory information Signup and view all the answers

Which of the following is an example of a sensory organ?

The eyes Signup and view all the answers

What is the function of nerve impulses in the nervous system?

To transmit messages to and from the brain and spinal cord Signup and view all the answers

What is the primary function of the central nervous system?

To coordinate the body's actions and sensory information Signup and view all the answers

What is the primary function of neurons in the brain?

To transmit signals across synapses Signup and view all the answers

What is the role of the hypothalamus in the brain?

To regulate body temperature Signup and view all the answers

What is the primary function of the auditory nerve?

To transmit auditory signals from the ear to the brain Signup and view all the answers

What is the result of damage to the spinal cord?

Severe and often irreversible consequences Signup and view all the answers

What is the primary function of the optic nerve?

To transmit visual signals from the eye to the brain Signup and view all the answers

What is the primary function of hair cells in the cochlea?

To convert sound waves into electrical signals Signup and view all the answers

What is the primary function of photoreceptor cells in the retina?

To convert light into electrical signals Signup and view all the answers

What is the primary function of the olfactory receptors in the nasal cavity?

To detect airborne chemicals Signup and view all the answers

What is the primary function of taste buds on the tongue?

To detect different flavors Signup and view all the answers

What is the primary function of sensory receptors in the skin?

To detect pressure, temperature, and pain Signup and view all the answers

Gr 9 NATURAL SCIENCES: CH 1.2 The nervous system

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Questions and Answers

What is the main function of the nervous system?

What is the peripheral nervous system (PNS)?

What is the primary function of the brain?

What is the function of the spinal cord?

What is the function of sensory organs?

What do nerves transmit?

What is the function of the eyes?

What is the function of the ears?

What is the function of the nose?

What forms the central nervous system (CNS)?

Which sense organ detects different flavors?

What is the function of the hypothalamus?

What is the result of damage to the brain or spinal cord?

What is the function of olfactory receptors?

What is the result of a stroke?

What is the function of sensory receptors in the skin?

What is the effect of substance abuse on the brain?

What is the function of photoreceptor cells in the retina?

What is the result of degenerative disorders?

What is the function of hair cells in the cochlea?

What is the main pathway for transmitting signals between the brain and the rest of the body?

Which region of the brain controls thought, memory, and emotion?

What is the function of the spinal cord?

What is the function of the eyes?

What is the purpose of the nervous system?

What is the function of sensory organs?

What is composed of different regions that control various functions?

What is the function of the nasal cavity?

What forms the peripheral nervous system?

What is the function of the nervous system in relation to the body's actions?

Which part of the body receives signals about temperature, pressure, and pain?

What is the role of neurons in the brain?

What is the function of the auditory nerve?

What is the result of a broken neck?

What is the function of the optic nerve?

What is the cause of permanent damage and loss of function in parts of the body?

What is the function of the hypothalamus?

What is the effect of substance abuse on the brain?

What is the role of neurotransmitters?

What is the result of damage to sensory organs?

What is the primary function of the nerves in the peripheral nervous system?

Which of the following is NOT a function of the brain?

What is the main difference between the central nervous system and the peripheral nervous system?

What is the role of specialized cells in sensory organs?

What is the primary function of the spinal cord?

What is the result of damage to the central nervous system?

What is the role of the brain in the nervous system?

Which of the following is an example of a sensory organ?

What is the function of nerve impulses in the nervous system?

What is the primary function of the central nervous system?

What is the primary function of neurons in the brain?

What is the role of the hypothalamus in the brain?

What is the primary function of the auditory nerve?

What is the result of damage to the spinal cord?

What is the primary function of the optic nerve?

What is the primary function of hair cells in the cochlea?

What is the primary function of photoreceptor cells in the retina?

What is the primary function of the olfactory receptors in the nasal cavity?

What is the primary function of taste buds on the tongue?

What is the primary function of sensory receptors in the skin?

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