Ventricular System and Cerebrospinal Fluid Quiz
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Questions and Answers

Which structure produces cerebrospinal fluid in the ventricular system?

  • Choroid plexus (correct)
  • Spinal cord
  • Brainstem
  • Central canal
  • What is the main function of cerebrospinal fluid in the CNS?

  • Production of neurotransmitters
  • Mechanical protection (correct)
  • Digestion of nutrients
  • Muscle coordination
  • In what part of the body can cerebrospinal fluid be sampled for diagnostic purposes?

  • Ventricular system (correct)
  • Pituitary gland
  • Midbrain
  • Diencephalon
  • Which part of the CNS is involved in the circulation of cerebrospinal fluid around the brain and spinal cord?

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

    What is the role of the ventricular system in the CNS besides housing cerebrospinal fluid?

    <p>Facilitation of communication between different brain regions</p> Signup and view all the answers

    Which type of neuron has multiple dendrites and one axon?

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

    Which glial cell type is responsible for providing structural and metabolic support in the CNS?

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

    What is the function of oligodendrocytes in the CNS?

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

    In the PNS, which cells are responsible for forming myelin around a segment of a single axon?

    <p>Schwann cells</p> Signup and view all the answers

    What is the main function of microglia in the CNS?

    <p>Act as immune cells</p> Signup and view all the answers

    Which type of glial cell forms myelin sheaths around axons in the PNS?

    <p>Schwann cells</p> Signup and view all the answers

    What is one of the functions of neuroglia related to neurotransmitters?

    <p>Recycling neurotransmitters</p> Signup and view all the answers

    Which equation can be used to calculate the equilibrium potential of an ion at 37°C?

    <p>Eion = (RT/zF)ln[Ion]out/[Ion]in</p> Signup and view all the answers

    What contributes to the generation of resting membrane potential in neurons?

    <p>Differential permeabilities to ions and their concentration gradients</p> Signup and view all the answers

    How is neuronal resting membrane potential typically measured experimentally?

    <p>Via intracellular microelectrodes or voltage-sensitive dyes</p> Signup and view all the answers

    Which equation is used to calculate the resting membrane potential in neurons?

    <p>GHK equation</p> Signup and view all the answers

    What can cause changes in the resting membrane potential of neurons?

    <p>Temperature changes or differential ion permeabilities</p> Signup and view all the answers

    Which brain region is primarily responsible for motor learning and movement coordination?

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

    Which component of the brainstem is involved in regulating sleep/wake cycles and motor/sensory pathways?

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

    Where would you find swellings along unmyelinated axons that release neurotransmitters?

    <p>Neuroeffector junction</p> Signup and view all the answers

    Which structure connects the two cerebral hemispheres?

    <p>Corpus callosum</p> Signup and view all the answers

    What is the main function of the hypothalamus in the brain?

    <p>Regulate homeostasis and hormone secretion</p> Signup and view all the answers

    Which part of the spinal cord contains cell bodies of sensory neurons?

    <p>Dorsal root ganglion</p> Signup and view all the answers

    What neurotransmitter is released by preganglionic sympathetic fibers onto the ganglion?

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

    Which division of the autonomic nervous system controls the male sexual response?

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

    What is the primary neurotransmitter released at the neuromuscular junction by the motor neuron?

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

    What effect does curare have on neurotransmission in the neuromuscular junction?

    <p>Prevents muscle contraction</p> Signup and view all the answers

    In which condition do autoantibodies to nAChRs impair neuromuscular transmission?

    <p>Myasthenia Gravis</p> Signup and view all the answers

    What type of receptors does norepinephrine act on in the sympathetic nervous system?

    <p>Adrenergic receptors</p> Signup and view all the answers

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