Histology of the Peripheral Nervous System Quiz
55 Questions
1 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

What type of ganglia serves as relay stations to transmit nerve impulses?

  • Sympathetic ganglion
  • Sensory ganglia
  • Dorsal root ganglia
  • Autonomic ganglia (correct)

    • Which type of nerve fibers carry information from internal body regions and the environment to the CNS?

  • Efferent fibers
  • Sensory nerve fibers (correct)
  • Sympathetic nerve fibers
  • Autonomic nerve fibers

    • What is the function of Meissner's Plexus (submucosal plexus)?

  • Provides motor innervation of smooth muscle
  • Responsible for sensitivity to vibration and pressure
  • Provides secretory innervation of goblet cells (correct)
  • Responds to mechanical pressure or distortion

    • Which type of ganglia may lack distinct capsules, forming a loosely organized plexus within the surrounding connective tissue?

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

    What do Pacinian corpuscles respond to?

    <p>Sensitivity to vibration and pressure</p> Signup and view all the answers

    Where are Auerbach's plexus (myenteric plexus) found?

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

    What is the main function of Autonomic nerves in the Autonomic Nervous System?

    <p>Maintain constant internal environment</p> Signup and view all the answers

    What do mechanoreceptors respond to?

    <p>Mechanical pressure or distortion</p> Signup and view all the answers

    What is the function of Meissner Corpuscle (or tactile corpuscle)?

    Signup and view all the answers

    What is the main function of the peripheral nervous system?

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

    Which of the following is NOT a part of the peripheral nervous system?

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

    What is the main role of glial cells in nerve tissue?

    <p>Supporting and protecting neurons</p> Signup and view all the answers

    Which type of nerve cells exhibits mitotic activity?

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

    What is the function of dendrites in nerve cells?

    <p>Receiving stimuli</p> Signup and view all the answers

    Where are the synaptic boutons found?

    <p>At the terminal ends of axons</p> Signup and view all the answers

    What separates nerve cells from connective tissue in the nervous tissue?

    <p>Blood brain barrier</p> Signup and view all the answers

    Which part of the nervous system controls voluntary movements?

    <p>Central nervous system (CNS)</p> Signup and view all the answers

    What is the main function of oligodendrocytes in the nervous system?

    <p>Producing myelin sheath in the central nervous system</p> Signup and view all the answers

    Where are satellite cells found in the nervous system?

    <p>Surrounding the endoneurium</p> Signup and view all the answers

    What is the role of microglia in the nervous system?

    <p>Acting as immune cells and scavenging debris and pathogens</p> Signup and view all the answers

    Which type of nerve fibers are individually surrounded by Schwann cells in the peripheral nervous system?

    <p>Myelinated fibers</p> Signup and view all the answers

    What is the function of ependymal cells in the nervous system?

    <p>Forming a selectively permeable epithelial-like layer</p> Signup and view all the answers

    Where are Pacinian corpuscles commonly found in the nervous system?

    <p>In the connective tissue surrounding axons and Schwann cells</p> Signup and view all the answers

    What is the primary function of dendrites in a neuron?

    <p>Receiving information from other neurons at synapses</p> Signup and view all the answers

    Which type of ganglia may lack distinct capsules and form a loosely organized plexus within surrounding connective tissue?

    <p>Autonomic ganglia</p> Signup and view all the answers

    Which type of ganglia may lack distinct capsules, forming a loosely organized plexus within the surrounding connective tissue?

    <p>Autonomic ganglia</p> Signup and view all the answers

    Where are satellite cells found in the nervous system?

    <p>In the ganglions</p> Signup and view all the answers

    What separates nerve cells from connective tissue in the nervous tissue?

    <p>Blood brain barrier</p> Signup and view all the answers

    What is the primary function of dendrites in a neuron?

    <p>Receiving stimuli from other neurons</p> Signup and view all the answers

    Which type of nerve fibers are individually surrounded by Schwann cells in the peripheral nervous system?

    <p>Sensory nerve fibers</p> Signup and view all the answers

    What do Pacinian corpuscles respond to?

    <p>Pressure and vibration</p> Signup and view all the answers

    What do mechanoreceptors respond to?

    <p>Pressure and vibration</p> Signup and view all the answers

    What is the function of Meissner Corpuscle (or tactile corpuscle)?

    <p>Detecting pressure and vibration</p> Signup and view all the answers

    What is the main role of glial cells in nerve tissue?

    <p>Supporting and protecting neurons</p> Signup and view all the answers

    Where are the synaptic boutons found?

    <p>At the terminal ends of axons</p> Signup and view all the answers

    Which type of ganglia are responsible for receiving afferent impulses that go to the Central Nervous System?

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

    Where are Pacinian corpuscles commonly found in the nervous system?

    <p>Glabrous and hairy skin, as well as in the subcutaneous tissue</p> Signup and view all the answers

    What is the main function of oligodendrocytes in the nervous system?

    <p>Form myelin sheath in the CNS to insulate axons</p> Signup and view all the answers

    What separates nerve cells from connective tissue in the nervous tissue?

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

    What do mechanoreceptors respond to?

    <p>Sensory receptor that responds to mechanical pressure or distortion</p> Signup and view all the answers

    What is the role of microglia in the nervous system?

    <p>Phagocytosis of pathogens and debris in the CNS</p> Signup and view all the answers

    Where are Auerbach's plexus (myenteric plexus) found?

    <p>Organ they innervate within the autonomic nervous system</p> Signup and view all the answers

    What is the function of Meissner's Plexus (submucosal plexus)?

    <p>Provide secretory innervation of goblet cells in the epithelium and motor innervation of a thin layer of smooth muscle</p> Signup and view all the answers

    What is the main function of Autonomic nerves in the Autonomic Nervous System?

    <p>Effect the activity of smooth muscle, secretion of some glands, heart rate, and many other involuntary activities by which the body maintains constant internal environment.</p> Signup and view all the answers

    Which part of the nervous system controls voluntary movements?

    <p>Central Nervous System (CNS)</p> Signup and view all the answers

    What is the primary function of Schwann cells in the Peripheral Nervous System (PNS)?

    <p>Facilitating regeneration of damaged nerve fibers</p> Signup and view all the answers

    What is the main role of oligodendrocytes in the nervous system?

    <p>Producing a myelin sheath for nerve fibers</p> Signup and view all the answers

    What separates nerve cells from connective tissue in the nervous tissue?

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

    What is the function of Meissner's Plexus (submucosal plexus)?

    <p>Controlling smooth muscle contraction in the digestive tract</p> Signup and view all the answers

    Where are the synaptic boutons found?

    <p>On the axon terminals</p> Signup and view all the answers

    What do mechanoreceptors respond to?

    <p>Mechanical stimuli</p> Signup and view all the answers

    What is the main function of Autonomic nerves in the Autonomic Nervous System?

    <p>Regulating involuntary processes like heart rate and digestion</p> Signup and view all the answers

    Where are satellite cells found in the nervous system?

    <p>In ganglia providing metabolic and mechanical support to neurons</p> Signup and view all the answers

    What is the function of ependymal cells in the nervous system?

    <p>Forming a barrier between cerebrospinal fluid and nervous tissue</p> Signup and view all the answers

    Which type of nerve fibers are individually surrounded by Schwann cells in the peripheral nervous system?

    <p>Myelinated fibers</p> Signup and view all the answers

    Study Notes

    • The cell body (soma) of a neuron contains a large nucleus with a prominent nucleolus and is surrounded by perinuclear cytoplasm rich in rough endoplasmic reticulum and free ribosomes.

    • Dendrites are projections from the cell body that branch many times and provide locations for other neurons to communicate with the cell body. They receive information from other neurons at synapses.

    • The axon is a long process that arises from the cell body and conducts electrical impulses away from the cell body. Its diameter is related to conduction velocity.

    • Glial cells outnumber neurons in the mammalian brain and support neuronal survival and activities. There are six major kinds of glial cells, including astrocytes, oligodendrocytes, microglia, ependymal cells, Schwann cells, and satellite cells.

    • In the peripheral nervous system (PNS), peripheral nerves are bundles of nerve fibers (axons) individually surrounded by Schwann cells and connective tissue.

    • Myelinated fibers in the PNS have a myelin sheath produced by Schwann cells, which insulates the axon and facilitates the formation of action potentials. Unmyelinated fibers do not have a myelin sheath.

    • Axons and Schwann cells are enclosed within layers of connective tissue, including the endoneurium, perineurium, and epineurium. These layers protect the nerve and regulate diffusion into the nerve.

    • The peripheral nervous system establishes communication between centers in the CNS and the sense organs and effectors, and generally contains both afferent (sensory) and efferent (motor) fibers.

    • The cell body (perykarion) of a neuron contains a large, euchromatic nucleus with a prominent nucleolus and perinuclear cytoplasm rich in rough endoplasmic reticulum and free ribosomes.

    • Dendrites are projection from the cell body that branch many times and provide locations for other neurons to communicate with the cell body. Dendrites receive information from other neurons at synapses.

    • The axon is a single, long process that arises from the cell body, much thinner than the dendrites, and its diameter is related to conduction velocity. It is covered by myelin sheath in the Peripheral Nervous System (PNS) and Schwann cells.

    • Glial cells support and protect neurons, outnumbering them by ten times in the mammalian brain. There are six major types of glial cells: astrocytes, oligodendrocytes, microglia, ependymal cells, Schwann cells, and satellite cells.

    • In the Peripheral Nervous System (PNS), Schwann cells envelop nerve fibers, and they produce a myelin sheath that insulates the axon, allowing for faster action potential propagation and facilitating regeneration of damaged fibers.

    • Satellite cells are cuboidal or squamous glial cells of ganglia that provide metabolic and mechanical support to the neurons.

    • The peripheral nervous system (PNS) is composed of nerves, ganglia, and nerve endings, which are bundles of nerve fibers (axons) individually surrounded by Schwann cells and connective tissue.

    • Myelinated fibers in the PNS are covered by a multilayered myelin sheath produced by Schwann cells, which insulates the axon and facilitates action potential propagation.

    • Unmyelinated axons are surrounded by a single Schwann cell and do not form myelin sheaths and they use action potentials that do not require myelin sheath insulation.

    • Axons and Schwann cells are enclosed within layers of connective tissue, with endoneurium surrounding each axon, perineurium surrounding nerve fascicles, and epineurium surrounding the entire nerve.

    • Peripheral nerves provide communication between the CNS and sense organs and effectors (muscles, glands), and they generally contain both afferent (sensory) and efferent (motor) fibers.

    Studying That Suits You

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

    Quiz Team

    Related Documents

    Histology of Peripheral Nervous System PDF

    Description

    Test your knowledge of the histological structure and organization of the peripheral nervous system with this quiz. Explore topics such as ganglions, nerves, and the autonomic nervous system.

    More Like This

    Peripheral Nervous System Histology
    30 questions

    Nervous System Histology Quiz: Peripheral Nervous System

    RichTourmaline9881 avatar
    RichTourmaline9881
    Histology of Peripheral Nervous System
    10 questions

    Histology of Peripheral Nervous System

    UnderstandableYtterbium avatar
    UnderstandableYtterbium
    Histology Flashcards (Mastering A&P)
    54 questions

    Histology Flashcards (Mastering A&P)

    VersatileCopernicium avatar
    VersatileCopernicium
    Histology of Stratified and Transitional Epithelium
    101 questions

    Histology of Stratified and Transitional Epithelium

    RevolutionaryDulcimer avatar
    RevolutionaryDulcimer
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser