Gr 9 NATURAL SCIENCES: CH 1.2 The musculoskeletal system
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Questions and Answers

What is the primary function of the nervous system?

  • To filter blood
  • To transmit nerve impulses between different parts of the body (correct)
  • To regulate body temperature
  • To produce hormones

    • Which part of the brain is responsible for initiating responses?

  • Spinal cord
  • Cerebrum (correct)
  • Cerebellum
  • Brainstem

    • What is the function of the spinal cord?

  • To store memories
  • To generate thoughts and emotions
  • To process sensory information
  • To transmit neural signals between the brain and the rest of the body (correct)

    • What are the basic functional units of the nervous system?

    <p>Neurons</p> Signup and view all the answers

    How do neurons communicate with each other?

    <p>Through chemical neurotransmitters</p> Signup and view all the answers

    What is the function of sensory organs?

    <p>To detect external stimuli and send information to the brain</p> Signup and view all the answers

    What type of nerves connect directly to the brain?

    <p>Cranial nerves</p> Signup and view all the answers

    What is the process of transmitting electrical impulses called?

    <p>Transmission of nerve impulses</p> Signup and view all the answers

    Which part of the neuron receives signals?

    <p>Dendrites</p> Signup and view all the answers

    What is the function of the brainstem?

    <p>To control involuntary actions</p> Signup and view all the answers

    What is the role of sensory neurons in the nervous system?

    <p>Carrying information from sensory receptors to the CNS</p> Signup and view all the answers

    What is the result of a stroke in the nervous system?

    <p>Loss of neural function due to lack of oxygen</p> Signup and view all the answers

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

    <p>Processing information and sending out motor commands</p> Signup and view all the answers

    What is a reflex action in the nervous system?

    <p>A rapid, involuntary response to stimuli</p> Signup and view all the answers

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

    <p>Coordinating with the nervous system to regulate body functions</p> Signup and view all the answers

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

    <p>Paralysis of the limbs</p> Signup and view all the answers

    What is the impact of substance abuse on the nervous system?

    <p>Irreversible brain damage</p> Signup and view all the answers

    What is the role of motor neurons in the nervous system?

    <p>Carrying information from the CNS to muscles and glands</p> Signup and view all the answers

    What is a degenerative disorder in the nervous system?

    <p>A condition that causes progressive loss of neural function</p> Signup and view all the answers

    What is the result of damage to the nervous system?

    <p>Loss of cognitive function</p> Signup and view all the answers

    What is the primary function of the cerebrum?

    <p>To process sensory information, initiate responses, store memories, and generate thoughts and emotions</p> Signup and view all the answers

    Which part of the nervous system is responsible for coordinating reflexes?

    <p>Spinal cord</p> Signup and view all the answers

    What is the role of axons in neurons?

    <p>To send signals</p> Signup and view all the answers

    What is the function of chemical neurotransmitters in the nervous system?

    <p>To facilitate communication between neurons through synapses</p> Signup and view all the answers

    What is the main function of cranial nerves?

    <p>To connect directly to the brain</p> Signup and view all the answers

    What is the role of the cell body in neurons?

    <p>To maintain the health and function of the neuron</p> Signup and view all the answers

    What is the function of the cerebellum?

    <p>To coordinate voluntary and involuntary actions</p> Signup and view all the answers

    What is the result of the transmission of nerve impulses?

    <p>The coordination of voluntary and involuntary actions</p> Signup and view all the answers

    What is the role of dendrites in neurons?

    <p>To receive signals</p> Signup and view all the answers

    What is the function of the nervous system in relation to the external environment?

    <p>To receive and process sensory information</p> Signup and view all the answers

    What is the purpose of neurotransmitters in the nervous system?

    <p>To carry the signal to the next neuron</p> Signup and view all the answers

    Which type of neurons carry information from sensory receptors to the CNS?

    <p>Sensory neurons</p> Signup and view all the answers

    What is the main characteristic of reflex actions?

    <p>They are rapid and involuntary</p> Signup and view all the answers

    What is the role of the nervous system in maintaining homeostasis?

    <p>To coordinate with the endocrine system to maintain homeostasis</p> Signup and view all the answers

    What is a common result of damage to the brain or spinal cord due to accidents or injuries?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is a degenerative disorder?

    <p>Alzheimer's disease</p> Signup and view all the answers

    What is the effect of substance abuse on the nervous system?

    <p>It can cause irreversible brain damage</p> Signup and view all the answers

    What is the purpose of the CNS in the nervous system?

    <p>To process information and send out motor commands</p> Signup and view all the answers

    What is the impact of a stroke on the brain?

    <p>It can cause brain cells to die due to lack of oxygen</p> Signup and view all the answers

    What is the role of motor neurons in the nervous system?

    <p>To send out motor commands to muscles and glands</p> Signup and view all the answers

    What is the primary role of the CNS in sensory input and motor output?

    <p>To process and integrate sensory information from multiple sources.</p> Signup and view all the answers

    What is the primary consequence of damage to the brain or spinal cord from accidents or injuries?

    <p>Loss of function, such as paralysis or cognitive impairments.</p> Signup and view all the answers

    What is the primary characteristic of reflex actions?

    <p>They are rapid, involuntary responses to stimuli.</p> Signup and view all the answers

    What is the primary role of the nervous system in regulating body functions?

    <p>To maintain homeostasis and coordinate with the endocrine system.</p> Signup and view all the answers

    What is the primary consequence of a stroke in the nervous system?

    <p>Death of brain cells due to lack of oxygen.</p> Signup and view all the answers

    What is the primary consequence of degenerative disorders on neural function?

    <p>Progressive loss of neural function.</p> Signup and view all the answers

    What is the primary role of neurotransmitters in the nervous system?

    <p>To transmit signals from one neuron to another.</p> Signup and view all the answers

    What is the primary consequence of substance abuse on the nervous system?

    <p>Irreversible brain damage and memory loss.</p> Signup and view all the answers

    What is the primary role of the sensory organs in the nervous system?

    <p>To receive and transmit sensory information from the environment.</p> Signup and view all the answers

    What is the primary consequence of trauma and injuries on the nervous system?

    <p>Loss of function, such as paralysis or cognitive impairments.</p> Signup and view all the answers

    What is the primary function of the brain in relation to the nervous system?

    <p>To process sensory information, initiate responses, store memories, and generate thoughts and emotions</p> Signup and view all the answers

    What is the main function of the spinal cord in relation to the nervous system?

    <p>To transmit neural signals between the brain and the rest of the body</p> Signup and view all the answers

    What is the function of neurons in the nervous system?

    <p>To receive, integrate, and send signals</p> Signup and view all the answers

    What is the role of sensory organs in the nervous system?

    <p>To detect external stimuli and send information to the brain for interpretation</p> Signup and view all the answers

    What is the function of the cerebrum in the nervous system?

    <p>To process sensory information, initiate responses, store memories, and generate thoughts and emotions</p> Signup and view all the answers

    What is the role of axons in neurons?

    <p>To send signals to other neurons or to muscles or glands</p> Signup and view all the answers

    What is the function of chemical neurotransmitters in the nervous system?

    <p>To facilitate communication between neurons at synapses</p> Signup and view all the answers

    What is the purpose of the brainstem in the nervous system?

    <p>To regulate essential functions such as breathing, heart rate, and blood pressure</p> Signup and view all the answers

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

    <p>To coordinate muscle movements and maintain posture</p> Signup and view all the answers

    What is the main function of cranial nerves in the nervous system?

    <p>To connect directly to the brain and regulate various bodily functions</p> Signup and view all the answers

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