Histology-Fall11 Specialized Connective Tissue

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Author:
catorresdiaz
ID:
105581
Filename:
Histology-Fall11 Specialized Connective Tissue
Updated:
2011-10-01 15:35:52
Tags:
histology lab specialized connective tissue
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Description:
histology lab specialized connective tissue
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  1. HYALINE CARTILAGE

    • Characteristics: avascular; glass-like appearance; mostly ground substance and other non-cellular components, such as type II collagen fibers.
    • Function: support of structrues, reduction of friction between surfaces, limited flexibility.
    • Location: C-rings of trachea, articular surfaces, nasal cartilage.
  2. ELASTIC CARTILAGE

    • Characteristics: avascular; elastic fibers stain dark and are visible; contains type II collagen.
    • Function: elasticity of cartilage.
    • Location: auditory canal, external ear, epiglottis.
  3. FIBROCARTILAGE

    • Characteristics: avascular: chondrocytes arranged in rows; no periochondrium.
    • Function: joins certain, adjacent bones together; provides cushioning for vertebrae.
    • Location: symphyses, Eustachian tube, invertebral disks, tendon insertions.
  4. ENDOCHONDRAL OSSIFICATION

    • Characteristics: hypertrophy of chondrocytes and invasion by periosteal bud.
    • Function: forming of marrow; bone growth.
    • Location: short and long bones.
  5. ENDOCHONDRAL OSSIFICATION, MAGNIFIED

    • Characteristics: cartilage serves as mold for ossification; chondrocytes hypertrophy, and osteoblasts secrete matrix while osteoclasts degrade matrix
    • Function: forming of marrow; bone growth.
    • Location: short and long bones.
  6. OSTEOCLASTS

    • Characteristics: multinuclear.
    • Function: bone resorption and remodeling of bone.
    • Location: along the trabecula in Howship's lacunae.
  7. CANCELLOUS (SPONGY) BONE

    • Characteristics: low-density; porous with numberous trabeculae.
    • Function: site for hemopoeisis.
    • Location: epiphyses of long bones, pelvis.
  8. COMPACT BONE

    • Characteristics: vascular CT; Haversion system (osteon) visible; Volkmann's cannals present.
    • Function: support for body.
    • Location: long bones.

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