Histology Vocab (Definitions and Pictures)

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33 Terms

1

Histology

The anatomical study of the microscopic structure of animal and plant tissue

<p>The anatomical study of the microscopic structure of animal and plant tissue</p>
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2

Free Surface

Cells that line passageways (vessles, digestive system, air, etc...

<p>Cells that line passageways (vessles, digestive system, air, etc...</p>
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3

Basement Membrane

Anchors epithelial tissue to the musculature... Think of the basement of a house, anchoring the house to the ground; last row of cells attach to this

<p>Anchors epithelial tissue to the musculature... Think of the basement of a house, anchoring the house to the ground; last row of cells attach to this</p>
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4

Cell Connections

Bind cells together; provide permeability barrier and communication; think of a kid building blocks, cells are like the blocks, they wouldn't get knocked over if they had been connected

<p>Bind cells together; provide permeability barrier and communication; think of a kid building blocks, cells are like the blocks, they wouldn&apos;t get knocked over if they had been connected</p>
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5

Desmosomes

Cell to cell connection; glycoproteins are like a natural, biological glue; filaments=protein wire

<p>Cell to cell connection; glycoproteins are like a natural, biological glue; filaments=protein wire</p>
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6

Hemidesmosomes

Cell to basement membrane cell connection

<p>Cell to basement membrane cell connection</p>
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7

Tight Junctions

Hld cells together, act like a Zip Lock Bag - will not let out water; Consists of two parts Zonula Aderens and Zonula Occtudens

<p>Hld cells together, act like a Zip Lock Bag - will not let out water; Consists of two parts Zonula Aderens and Zonula Occtudens</p>
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8

Zonula Adherens

Runs the lenth of the cell; actin protein

<p>Runs the lenth of the cell; actin protein</p>
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9

Zonula Occludens

Runs the lenth of the cell; HUGE thicc (not as thicc as you tho) fibers; at junction, actin tough filaments

<p>Runs the lenth of the cell; HUGE thicc (not as thicc as you tho) fibers; at junction, actin tough filaments</p>
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10

Gap Juntions

Hold two parts, and allow molecules and ions through. Think of rivets

<p>Hold two parts, and allow molecules and ions through. Think of rivets</p>
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11

Glands

Lined with epithelial tissue; produce secretion

<p>Lined with epithelial tissue; produce secretion</p>
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12

Endocrine Gland

An aggregate of cells WITHOUT a duct; relies on bloodstream and release of hormones

<p>An aggregate of cells WITHOUT a duct; relies on bloodstream and release of hormones</p>
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13

Exocrine Glands

Has a duct; a flask made of an aggregate of cells

<p>Has a duct; a flask made of an aggregate of cells</p>
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14

Merocrine Glands

Water producing sweat glands; take materials from blood vessels like salt and water.

<p>Water producing sweat glands; take materials from blood vessels like salt and water.</p>
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15

Apocrine Gland

Discharges fragments of the gland cells in the secretion

<p>Discharges fragments of the gland cells in the secretion</p>
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16

Holocrine Glands

Shed entire cells; entire cell becomes part of secretion

<p>Shed entire cells; entire cell becomes part of secretion</p>
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17

Connective Tissue

They support and suspend

<p>They support and suspend</p>
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18

Matrix

Background material; 3 parts: protein fibers, ground substance, and fluid; can be thin and watery or thick like cartilage (or your ass)

<p>Background material; 3 parts: protein fibers, ground substance, and fluid; can be thin and watery or thick like cartilage (or your ass)</p>
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19

Collagen Fibers

Thicker, rope like, strong, long protein, support watery environment; ligaments/tendons

<p>Thicker, rope like, strong, long protein, support watery environment; ligaments/tendons</p>
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20

Reticular Fibers

Very fine, short, thin collogen, fibers; tendency to form an interlocking network; filler material; every basement membrane, organs (spleen, liver, kidneys)

<p>Very fine, short, thin collogen, fibers; tendency to form an interlocking network; filler material; every basement membrane, organs (spleen, liver, kidneys)</p>
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21

Elastic Fibers

Contain protein elastin; its own category of protein, suspension like rubber band, found in all basement membranes

<p>Contain protein elastin; its own category of protein, suspension like rubber band, found in all basement membranes</p>
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22

Blasts

Do bulk of work: young, active, and create matrix ex: Fibroblasts

<p>Do bulk of work: young, active, and create matrix ex: Fibroblasts</p>
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23

Cytes

Put polish on; maintain the matrix mature cells ex: Fibrocytes

<p>Put polish on; maintain the matrix mature cells ex: Fibrocytes</p>
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24

Ground Substance

The liquid, gelatinous or very dense substance that is the matrix minus fibers, blood vessels etc...

<p>The liquid, gelatinous or very dense substance that is the matrix minus fibers, blood vessels etc...</p>
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25

Squamous "Flat"

Interlock like a puzzle huge thin sheet. They transfer nutrients ex: lungs

<p>Interlock like a puzzle huge thin sheet. They transfer nutrients ex: lungs</p>
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26

Cuboidal "cube"

As tall as they are wide. If most appear cuboidal it is cuboidal epithelial tissue

<p>As tall as they are wide. If most appear cuboidal it is cuboidal epithelial tissue</p>
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27

Columnar "columns"

Taller than wide. Some have cilia. If cells are ciliated, must be columnar. Cilia sweeps away mucus.

<p>Taller than wide. Some have cilia. If cells are ciliated, must be columnar. Cilia sweeps away mucus.</p>
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28

Goblet Cells

Produce mucus. Only found in columnar cells, but not all columnar have mucus.

<p>Produce mucus. Only found in columnar cells, but not all columnar have mucus.</p>
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29

Simple Arrangement

Only one layer

<p>Only one layer</p>
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30

Stratified Arragement

Two or more layers

<p>Two or more layers</p>
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31

Pseudostratified

One layer of cells, but it looks like many due to the different heights of the nuclei

<p>One layer of cells, but it looks like many due to the different heights of the nuclei</p>
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32

Transitional Epithelial Tissue

Alter shape on circumstance; look half stratified, half cuboidal. Cytoplasm pushes up on the membrane

<p>Alter shape on circumstance; look half stratified, half cuboidal. Cytoplasm pushes up on the membrane</p>
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33

Urinary bladder

If empty, stratified cuboidal or columnar. If full stiatified squamous. Always look at the top 2-3 layers.

<p>If empty, stratified cuboidal or columnar. If full stiatified squamous. Always look at the top 2-3 layers.</p>
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