Histology study of tissues
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Histology – study of tissues. Groups of cells similar in structure and function The four types of tissues Epithelial Connective Muscle Nerve. Epithelial Tissue. Cellularity – composed almost entirely of cells Special contacts – form continuous sheets held together by tight junctions.

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Histology – study of tissues

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Histology study of tissues

Histology – study of tissues

  • Groups of cells similar in structure and function

  • The four types of tissues

    • Epithelial

    • Connective

    • Muscle

    • Nerve


Epithelial tissue

Epithelial Tissue

  • Cellularity – composed almost entirely of cells

  • Special contacts – form continuous sheets held together by tight junctions


Epithelial tissue1

Epithelial Tissue

  • Supported by connective tissue

  • Avascular but innervated – contains no blood vessels but supplied by nerve fibers

  • Regenerative – rapidly replaces lost cells by cell division


Classification of epithelia by shape

Classification of Epithelia by shape

  • Squamous, cuboidal, or columnar

Figure 4.1b


Classification of epithelia by layers

Classification of Epithelia by layers

  • Simple or stratified

Figure 4.1a


Epithelia simple squamous 1

Epithelia: Simple Squamous #1


Epithelia simple cuboidal not in lab

Epithelia: Simple Cuboidal (not in lab)


Epithelia simple columnar 2

Epithelia: Simple Columnar #2


Epithelia pseudostratified columnar 3

Epithelia: Pseudostratified Columnar #3


Epithelia transitional

Epithelia: Transitional

  • Several cell layers, basal cells are cuboidal, surface cells are dome shaped

  • Stretches to permit the distension of the urinary bladder

  • Lines the urinary bladder, ureters, and part of the urethra


Epithelia transitional draw on lab

Epithelia: Transitional (draw on lab)


Epithelial tissues

Epithelial tissues

  • http://www.stegen.k12.mo.us/tchrpges/sghs/ksulkowski/TissueSlides.htm


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