Anatomy And Physiology Nervous System Quiz Trivia

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Anatomy And Physiology Nervous System Quiz Trivia - Quiz

In the course of our study we go to know that the nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Test out how well you understood how the system works by taking up the quiz below.


Questions and Answers
  • 1. 

    Which of the following is not a function of the nervous system

    • A.

      A sense the internal and external enviornments

    • B.

      Intergrate sensory information

    • C.

      Coordinate voluntary and involuntary activities

    • D.

      Direct long term functions such as growth

    • E.

      Control peripheral effectors

    Correct Answer
    D. Direct long term functions such as growth
    Explanation
    The nervous system is responsible for many functions in the body, including sensing the internal and external environments, integrating sensory information, coordinating voluntary and involuntary activities, and controlling peripheral effectors. However, it does not directly control long-term functions such as growth. Growth is primarily regulated by hormones and other systems in the body, not by the nervous system.

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  • 2. 

    The brain and spinal cord comprise the _____________ nervous system

    • A.

      Central

    • B.

      Afferent

    • C.

      Peripheral

    • D.

      Autonomic

    • E.

      Efferent

    Correct Answer
    A. Central
    Explanation
    The brain and spinal cord make up the central nervous system. The central nervous system is responsible for processing and coordinating information in the body. It receives sensory input from the peripheral nervous system and sends out motor commands to the muscles and organs. The central nervous system plays a crucial role in controlling bodily functions and behaviors.

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  • 3. 

    Voluntary control of skeleal muscles is provided by the ________________ nervous system

    Correct Answer
    somatic
    Explanation
    The voluntary control of skeletal muscles is provided by the somatic nervous system. This system is responsible for transmitting signals from the brain to the skeletal muscles, allowing conscious control over their movement. Unlike the autonomic nervous system, which controls involuntary functions, the somatic nervous system allows individuals to consciously decide when and how to move their muscles. Therefore, the correct answer is somatic.

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  • 4. 

    The part of the peripheal nervous system that brings information to the central nervous system is

    Correct Answer
    afferent
    Explanation
    The correct answer is "afferent." The peripheral nervous system is responsible for transmitting information between the central nervous system and the rest of the body. The afferent division of the peripheral nervous system specifically brings sensory information from the body to the central nervous system. This includes signals such as touch, temperature, pain, and other sensory stimuli.

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  • 5. 

    Which of the following is not a function of the neuroglia?

    • A.

      Support

    • B.

      Phagocytosis

    • C.

      Isolation of neurons

    • D.

      Information processing

    • E.

      Secretion of cerborspinal fluid

    Correct Answer
    D. Information processing
    Explanation
    The function "information processing" is not typically associated with neuroglia. Neuroglia, also known as glial cells, primarily support, protect, and maintain the environment for neurons. Information processing is a function primarily attributed to neurons in the nervous system.

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  • 6. 

    Each of the following is a type of glial cell found in the central nervous system except

    • A.

      Astrocytes

    • B.

      Satellite cells

    • C.

      Microglia

    • D.

      Ependymal cells

    • E.

      Oligodendrocytes

    Correct Answer
    B. Satellite cells
    Explanation
    Satellite cells are a type of glial cell found in the peripheral nervous system, not the central nervous system. The other options listed (astrocytes, microglia, ependymal cells, and oligodendrocytes) are all types of glial cells that are found in the central nervous system.

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  • 7. 

    The myelin sheaths that surround the axons of some of the neurons in the CNS are formed by

    Correct Answer
    oligodendrocytes
    Explanation
    Oligodendrocytes are responsible for forming the myelin sheaths that surround the axons of some neurons in the central nervous system (CNS). These specialized cells play a crucial role in insulating and protecting the axons, allowing for faster and more efficient transmission of electrical signals. By wrapping around the axons, oligodendrocytes create multiple layers of myelin, which act as an insulating material and help to maintain the integrity and functionality of the nervous system.

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  • 8. 

    Small phagocytic cells that are especially obvious in damaged tissue in the CNS are the

    • A.

      Astrocytes

    • B.

      Ependymal cells

    • C.

      Microglia

    • D.

      Satellite cells

    • E.

      Oligodendrocytes

    Correct Answer
    C. Microglia
    Explanation
    Microglia are small phagocytic cells that are particularly noticeable in damaged tissue in the central nervous system (CNS). They are the resident immune cells of the CNS and play a crucial role in the immune response and inflammation. When tissue is damaged, microglia become activated and migrate to the site of injury to remove debris and dead cells through phagocytosis. Their presence in damaged tissue suggests their involvement in the clearance of cellular debris and the initiation of the inflammatory response in the CNS.

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  • 9. 

    Which of the following is a glial cell of the nervous system

    • A.

      Satellite cells

    • B.

      Neurons

    • C.

      Microglia

    • D.

      Schwann cells

    • E.

      Ependymal cells

    Correct Answer(s)
    A. Satellite cells
    C. Microglia
    D. Schwann cells
    E. Ependymal cells
    Explanation
    The correct answer is satellite cells, microglia, schwann cells, and ependymal cells. These are all examples of glial cells, which are non-neuronal cells that provide support and protection to neurons in the nervous system. Satellite cells are found in ganglia and help regulate the environment around neurons. Microglia are immune cells that protect the brain and spinal cord from infections and injuries. Schwann cells form the myelin sheath around peripheral nerves, aiding in signal transmission. Ependymal cells line the ventricles of the brain and assist in the production and circulation of cerebrospinal fluid.

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  • 10. 

    Cells responsible for information processing and transfer are the

    Correct Answer(s)
    neurons
    Explanation
    Neurons are specialized cells in the nervous system that are responsible for processing and transferring information. They receive signals from other neurons or sensory receptors, process the information, and transmit it to other neurons or target cells through electrical impulses. Neurons play a crucial role in various cognitive functions, such as perception, memory, and decision-making. They form complex networks and communicate with each other to ensure efficient information processing and transfer throughout the body.

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  • 11. 

    The axon is connected to the soma by the

    Correct Answer(s)
    hillock
    Explanation
    The axon is connected to the soma by the hillock. The axon hillock is a specialized region of the neuron where the axon originates. It is located at the base of the soma and serves as the site where action potentials are generated. This region contains a high concentration of voltage-gated ion channels, allowing for the rapid and efficient propagation of electrical signals along the axon. The axon hillock plays a crucial role in integrating and initiating the transmission of signals from the neuron's cell body to other neurons in the network.

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  • 12. 

    Dendritic and axonal processes are continuous and the soma lies off the one side called

    Correct Answer(s)
    unipolar
    Explanation
    The correct answer is "unipolar" because in a unipolar neuron, the dendritic and axonal processes are continuous and the soma lies off to one side. This means that the neuron has a single process that extends from the cell body and branches into dendrites at one end and an axon at the other end. This type of neuron is commonly found in invertebrates and is involved in sensory functions.

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  • 13. 

    Neurons that have several dendrites and single axon are called

    Correct Answer(s)
    multipolar
    Explanation
    Neurons that have several dendrites and a single axon are called multipolar. This classification is based on the number of processes arising from the cell body. Multipolar neurons are the most common type of neurons in the nervous system and are found in the brain and spinal cord. Their multiple dendrites allow them to receive signals from multiple sources, while the single axon transmits signals to other neurons or effector cells. This structural arrangement enables multipolar neurons to integrate and transmit information efficiently within the nervous system.

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  • 14. 

    ________________ neurons are the most common neuron in the CNS

    Correct Answer(s)
    Multipolar
    Explanation
    Multipolar neurons are the most common type of neuron found in the central nervous system (CNS). These neurons have multiple processes or extensions, including one axon and multiple dendrites, which allow them to receive and transmit signals from and to multiple other neurons. This structural complexity enables multipolar neurons to integrate and process information from various sources, making them essential for coordinating and regulating neuronal activity in the CNS.

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  • 15. 

    ___________ neurons form the afferent division of the PNS

    • A.

      Visceral sensory

    • B.

      Sensory

    • C.

      Somatic sensory

    • D.

      Neural sensory

    Correct Answer
    B. Sensory
    Explanation
    The correct answer is sensory because sensory neurons are responsible for transmitting sensory information from the body to the central nervous system (CNS). They are part of the afferent division of the peripheral nervous system (PNS) and play a crucial role in detecting and relaying information about touch, temperature, pain, and other sensory stimuli to the brain for processing and interpretation.

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  • 16. 

    The _________ nervous system controls the skeletal muscles

    • A.

      Somatic

    • B.

      Sympathetic

    • C.

      Parasympathetic

    • D.

      Autonomic

    • E.

      Afferent

    Correct Answer
    A. Somatic
    Explanation
    The somatic nervous system controls the skeletal muscles. This system is responsible for voluntary movements and is under conscious control. It allows us to move our limbs, perform actions, and engage in activities that require muscle coordination. The somatic nervous system receives sensory information from the environment and sends motor signals to the skeletal muscles, enabling us to interact with our surroundings.

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  • 17. 

    The site of intercellular communication between neurons is the

    Correct Answer
    synapse
    Explanation
    The synapse is the site of intercellular communication between neurons. It is a small gap between two neurons where electrical or chemical signals are transmitted. When an electrical impulse reaches the end of a neuron, it triggers the release of neurotransmitters into the synapse. These neurotransmitters then bind to receptors on the neighboring neuron, transmitting the signal and allowing for communication between the two neurons. This process is crucial for the transmission of information throughout the nervous system.

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  • 18. 

    Ion channels that are always open are called

    • A.

      Passive

    • B.

      Active

    • C.

      Leak

    • D.

      Gated

    • E.

      Local

    Correct Answer(s)
    A. Passive
    C. Leak
    Explanation
    Ion channels that are always open and allow the passive movement of ions across the cell membrane are called passive or leak channels. These channels do not require any external stimulus or energy to open or close, and they are responsible for maintaining the resting membrane potential of the cell. On the other hand, active channels require specific signals or changes in the cell's environment to open or close, gated channels are regulated by specific signals or ligands, and local channels are not recognized terms in the context of ion channels.

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  • 19. 

    Damage to ependymal cells would most likely affect the

    • A.

      Repair of axons

    • B.

      Formation of myelin sheaths

    • C.

      Formation of cerebrospinal fluid

    • D.

      Formation of ganglia

    • E.

      None of the above

    Correct Answer
    C. Formation of cerebrospinal fluid
    Explanation
    Damage to ependymal cells would most likely affect the formation of cerebrospinal fluid. Ependymal cells line the ventricles of the brain and the central canal of the spinal cord, and they play a crucial role in the production and circulation of cerebrospinal fluid (CSF). CSF is a clear fluid that surrounds and protects the brain and spinal cord, and it also helps in the exchange of nutrients and waste products. Damage to ependymal cells can disrupt the production and flow of CSF, leading to various neurological problems.

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  • 20. 

    After of stroke, what type of glial cell accumulates within the affected brain region

    Correct Answer
    astrocytes
    Explanation
    After a stroke, astrocytes accumulate within the affected brain region. Astrocytes are a type of glial cell that provide support and protection to neurons in the central nervous system. They help regulate the chemical environment, provide nutrients to neurons, and play a role in repairing damaged tissue. After a stroke, astrocytes migrate to the affected area and form scar tissue, which helps to limit the spread of damage and support the recovery process.

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