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Histology Identification Flashcards - Muscle, Bone, and Neurons

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  • Identify the tissue type with long, cylindrical, multinucleated fibers and visible striations.

    Skeletal muscle tissue characterized by striations and multiple peripheral nuclei.

  • What distinguishes cardiac muscle tissue under the microscope?

    Cardiac muscle tissue has striations, intercalated discs, and centrally located nuclei.

  • Describe the appearance of smooth muscle tissue in cross and longitudinal sections.

    Smooth muscle tissue shows spindle-shaped fibers with no striations, nuclei are centrally located; circular and longitudinal layers can be seen.

  • What are the key features of compact bone tissue in cross section?

    Compact bone shows central canals, lamellae, lacunae, and canaliculi.

  • Identify the main components visible in a multipolar neuron smear.

    Neurons with dendrites, cell bodies, axons, and supporting neuroglia.

  • What is the function of intercalated discs in cardiac muscle tissue?

    Intercalated discs connect cardiac muscle cells and allow synchronized contraction by facilitating electrical coupling.

  • How can you differentiate skeletal muscle fibers from smooth muscle fibers microscopically?

    Skeletal muscle fibers are striated and multinucleated; smooth muscle fibers lack striations and have single, central nuclei.

  • What is the significance of lamellae in compact bone?

    Lamellae are concentric rings of bone matrix that provide strength and structure to compact bone.

  • Describe the appearance of nuclei in skeletal muscle tissue.

    Nuclei are elongated and located at the periphery of the skeletal muscle fibers.

  • What structural feature is unique to cardiac muscle compared to skeletal and smooth muscle?

    Intercalated discs are unique to cardiac muscle, facilitating cell-to-cell communication.

  • What are canaliculi in bone tissue?

    Canaliculi are tiny channels that connect lacunae, allowing nutrient and waste exchange between osteocytes.

  • How do dendrites appear in a multipolar neuron smear?

    Dendrites appear as branching extensions from the neuron cell body, receiving signals.

  • What is the role of neuroglia in nervous tissue?

    Neuroglia support, protect, and nourish neurons in nervous tissue.

  • Describe the nuclei arrangement in smooth muscle tissue.

    Nuclei are elongated, centrally located within spindle-shaped smooth muscle fibers.

  • What is the appearance of skeletal muscle striations under high magnification?

    Striations appear as alternating light and dark bands along the length of skeletal muscle fibers.

  • How can you identify the axon hillock in a neuron smear?

    The axon hillock is the cone-shaped region of the neuron cell body where the axon originates.

  • What is the function of lacunae in bone tissue?

    Lacunae are small spaces housing osteocytes within the bone matrix.

  • How do cardiac muscle cells differ in nucleus location compared to skeletal muscle cells?

    Cardiac muscle cells have central nuclei, whereas skeletal muscle cells have peripheral nuclei.

  • What layers of smooth muscle are visible in the duodenum cross section?

    Circular and longitudinal layers of smooth muscle are visible in the duodenum cross section.

  • What is the significance of the central canal in compact bone?

    The central canal contains blood vessels and nerves supplying the bone.