epithelial tissues and vocab

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100 Terms

1

Squamous

Thin, flat epithelial cells

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2

Columnar

Tall, rectangular epithelial cells

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3

Cuboidal

Cube-shaped epithelial cells

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4

Simple

Single layer of cells

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5

Stratified

Multiple layers of cells

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6

Transitional

Epithelial cells that change shape and stretch

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7

Pseudo stratified

Single layer of cells that appear stratified

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8

Exocrine

Glands that secrete substances through ducts

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9

Endocrine

Glands that secrete hormones directly into the bloodstream

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10

Monocyte

Type of white blood cell

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11

Apocrine

Glands that secrete substances through the apical portion of the cell

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12

Holocrine

Glands that secrete substances by rupturing the entire cell

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13

Gland

Organ or tissue that produces and releases substances

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14

Epithelial

Tissue that covers surfaces and lines organs

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15

Free surface

Surface of epithelial cells not attached to other cells

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16

Basement membrane

Thin, non-cellular layer that anchors epithelial tissue to underlying connective tissue

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17

Basil surface

Surface of epithelial cells attached to other cells

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18

Nuclei

Cellular organelles that contain genetic material

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19

Vascular

Relating to blood vessels

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20

Goblet

Epithelial cells that secrete mucus

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21

Duct

Tube-like structure that carries fluids

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22

Hormones

Chemical messengers produced by endocrine glands

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23

Connective

Tissue that supports and connects other tissues

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24

Ground substance

Fluid or gel-like substance that fills the space between cells in connective tissue

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25

Extra cellular matrix

Non-cellular component of connective tissue that provides structural support

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26

Fiber

Thread-like structure in connective tissue

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27

Loose Connective tissue

Connective tissue with loosely arranged fibers

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28

Dense connective tissue

Connective tissue with densely packed fibers

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29

Fibrocytes

Cells that produce and maintain connective tissue fibers

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30

Collagen

Protein that provides strength and support to connective tissue

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31

Elastin

Protein that allows connective tissue to stretch and recoil

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32

Adipose

Connective tissue composed of fat cells

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33

Cartilage

Flexible connective tissue found in joints and other structures

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34

Hyaline

Type of cartilage with a smooth and glassy appearance

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35

Fibrocartilage

Type of cartilage with dense collagen fibers

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36

Elastic

Type of cartilage with elastic fibers

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37

Osseous

Relating to bone tissue

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38

Bone

Hard, mineralized connective tissue

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39

Osteocytes

Mature bone cells

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40

Erythrocytes

Red blood cells

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41

Leukocytes

White blood cells

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42

Plasma

Liquid component of blood

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43

Muscle

Tissue that contracts to produce movement

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44

Nervous

Tissue that transmits electrical signals

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45

Cardiac

Type of muscle tissue found in the heart

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46

Smooth

Type of muscle tissue found in the walls of organs

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47

Skeletal

Type of muscle tissue attached to bones

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48

Striated

Having striped or banded appearance

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49

Neuron

Nerve cell that transmits information

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50

Neuroglia

Supportive cells in the nervous system

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51

What is epithelial tissue?

It is the lining tissue that forms the boundary between our body and the external environment

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52

epithelial tissue functions

Protection

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Absorption

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Filtration

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Secretion

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56

What structures do all epithelial tissues share?

free surface, basal surface, basement membrane, avascular

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57

How are epithelial tissues classified?

shape and number of layers

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58

What is a simple squamous epithelium?

single layer of flat cells, thin and permeable

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59

function of simple squamous epithelium

rapid diffusion of materials

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60

Where are simple squamous epithelium found?

blood vessels and lung tissues

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61

Simple cuboidal epithelium

single layer of cube shaped cells

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Function: secretion and absorption

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Location: tissues of the kidney

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simple columnar epithelium

single layer of tall, closely packed cells - may have cilia and goblet cells, which secrete mucus

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Function: secretion of mucus - for protection + absorption of substances.

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Located: lining of digestive track

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71

stratified squamous epithelium

Thick layers that provide protection for underlying layers

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72
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Located: epidermal layer of skin

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74

stratified cuboidal epithelium

More than one layer of cuboidal cells

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75

Rare in the body

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Found in salivary & mammary glands

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77

stratified columnar epithelium

Free surface is lined with columnar cells

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78

Rare in the body

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79

Found in your larynx and the male urethra

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80

pseudo-stratified epithelium

The cell nuclei are found at different levels, so it appears

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81

stratified, even though it is not.

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82

Function: Secretion & Absorption

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83

Found in most of the upper respiratory tract

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84

transitional epithelium

Free surface varies in appearance, based doff the stretching of the tissue

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85

"Transition" = change shape with elasticity

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Found in the lining of the urinary bladder

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88

Glandular Epithelium

Gland made of a group of cells, that secrete a fluid substance

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Classified by

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-Complexity

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-How substances are secreted - exocrine + endocrine

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93

exocrine glands

secrete substances outward through a duct

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endocrine glands

Ductless glands that secrete hormones into the bloodstream

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95

Merocrine Gland

excretes via exocytoses

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96

ex. sweat glands

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97

Apocrine Gland

A portion of the cell pinches off with the secreted products

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ex. mammary glands

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Holocrine Gland

cells rupture and spill products into the duct

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ex. sebaceous (oil) glands in skin

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