Electricity Within The Body: Nervous System and Neurons
20 Questions
5 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which part of a neuron is specialized for receiving information from stimuli or from other cells?

  • Cell body
  • Axons
  • Dendrites (correct)
  • Synapses

    • Which nervous system controls various internal organs such as the heart, intestine, and glands?

  • Spinal cord
  • Peripheral nervous system
  • Autonomic nervous system (correct)
  • Central nervous system

    • What structures transmit sensory information to the brain or spinal cord?

  • Synapses
  • Neurons (correct)
  • Dendrites
  • Axons

    • What is the basic structural unit of the nervous system?

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

    What is the term used to describe the momentary change in resting potential at the point of stimulation?

    <p>Action potential</p> Signup and view all the answers

    In which structure do biochemical processes play an important role in nerve conduction?

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

    Which ions are impermeable to the membrane of the neuron?

    <p>A- (protein) ions</p> Signup and view all the answers

    What is the name for the insulating layer covering the membrane of some axons?

    <p>Myelin sheath</p> Signup and view all the answers

    What is the term for the decrease in potential below the resting potential due to the potassium gate remaining open too long in repolarization?

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

    Which factor affects the propagation speed of action potential by decreasing as the diameter of the axon increases?

    <p>Resistance within the core of the membrane</p> Signup and view all the answers

    What part of the neuron is specialized for receiving information from stimuli or from other cells?

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

    What is the term for the decrease in potential below the resting potential due to the potassium gate remaining open too long in repolarization?

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

    Which nervous system controls various internal organs such as heart, intestine, and glands?

    <p>Autonomic nervous system</p> Signup and view all the answers

    Which ions are impermeable to the membrane of the neuron?

    <p>Calcium ions</p> Signup and view all the answers

    In which structure do biochemical processes play an important role in nerve conduction?

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

    What is the term used to describe the electrical signal that carries information to muscles, glands, or other neurons?

    <p>Action potential</p> Signup and view all the answers

    What is the name of the fatty insulating layer that covers the membrane of some axons?

    <p>Myelin sheath</p> Signup and view all the answers

    What is the term for the decrease in potential below the resting potential due to the potassium gate remaining open too long in repolarization?

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

    Which factor affects the propagation speed of action potential by decreasing as the diameter of the axon increases?

    <p>Internal resistance of the axon</p> Signup and view all the answers

    What is the term for the electrical potential difference across the surface or membrane of every neuron, due to the presence of more negative ions on the inner side of the membrane than on the outside?

    <p>Resting potential</p> Signup and view all the answers

    Study Notes

    Neuron Structure and Function

    • Dendrites are specialized for receiving information from stimuli or from other cells.
    • The basic structural unit of the nervous system is the neuron.

    Nervous System Control

    • The autonomic nervous system controls various internal organs such as the heart, intestine, and glands.

    Sensory Information Transmission

    • Sensory receptors transmit sensory information to the brain or spinal cord.

    Nerve Conduction

    • Biochemical processes play an important role in nerve conduction in the axon.
    • The term for the electrical signal that carries information to muscles, glands, or other neurons is the action potential.

    Membrane and Ion Permeability

    • Calcium and sodium ions are impermeable to the membrane of the neuron.
    • The name of the fatty insulating layer that covers the membrane of some axons is the myelin sheath.

    Electrical Signals and Potentials

    • The term for the momentary change in resting potential at the point of stimulation is the excitatory postsynaptic potential (EPSP).
    • The term for the decrease in potential below the resting potential due to the potassium gate remaining open too long in repolarization is hyperpolarization.
    • The resting potential is the electrical potential difference across the surface or membrane of every neuron, due to the presence of more negative ions on the inner side of the membrane than on the outside.

    Action Potential Propagation

    • The propagation speed of action potential is affected by the diameter of the axon, decreasing as the diameter increases.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge about the nervous system, including the central nervous system, neurons, and the autonomic nervous system which controls internal organs. Explore the transmission of sensory information and the control of the autonomic nervous system.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser