TissuesGroup of cells similar in

structure and function4 different types with

numerous varieties

Epithelial , Connective , Muscle , Nervous , Credits

EpithelialSheet of cells covering a

body surface or lining a body cavity

Forms boundaries between different environments

Accomplishes many functions

3 types

Simple Epithelia, Stratified Epithelia, Transitional Epithelia

Simple Epithelial TissueSingle cell layerThin epithelial barrierAll cells have same basic

shape4 types

Simple Squamous, Simple Cuboidal, Simple Columnar, Pseudostratified Columnar

Simple Squamous EpitheliumSingle layer of flattened

cellsDisc shaped nucleiSparse cytoplasmFunctions – diffusion,

filtrationFound where it functions

are a priority

Simple Cuboidal, Simple Columnar, Pseudostratified Columnar

Simple Cuboidal EpitheliumSingle layer of cube like

cellsFunctions – secretion and

absorptionForms walls in gland ducts

and kidney tubules

Simple Squamous, Simple Columnar, Pseudostratified Columnar

Simple Columnar EpitheliumSingle layer of tall cells

with round nucleiMany cells have cilliaMay contain goblet cellsFunctions – absorption and

secretion

Simple Squamous, Simple Cuboidal, Pseudostratified Columnar

Pseudostratified Columnar Epithelium

Single layer of cells of varying heights

Nuclei at different levelsFunctions – Secretion and

propulsion In male sperm carrying

ducts and trachea

Simple Squamous, Simple Cuboidal, Simple Columnar

Stratified EpitheliaTwo or more stacked cell

layersRegenerate from belowMore durable than simple

epitheliaMajor role is protection

Stratified Squamous, Stratified Cuboidal, Stratified Columnar

Stratified Squamous EpitheliumThick membrane with

several cell layersprotects underlying tissuesForms external epidermisFound in esophagus,

mouth, and vagina

Stratified Cuboidal, Stratified Columnar

Stratified Cuboidal EpitheliumTwo cell layers thickRare in bodyFound in some sweat and

mammary glands

Stratified Squamous, Stratified Columnar

Stratified Columnar EpitheliumLimited distribution in

bodyApical layer of columnar

cellsFound in pharynx and male

urethraOccurs at transitional

areas

Stratified Squamous, Stratified Cuboidal

Transitional EpitheliumSeveral cell layersCuboidal basal cells and

dome shaped surface cellsStretches for distention of

bladderLines ureters and bladder

Connective TissueMost abundant primary

tissueHave a common originHave a ground substance,

fibers, and cellsAccomplish many functions4 main types with several

subtypes

Connective Tissue Proper, Cartilage, Bone, Blood

Connective Tissue ProperAll mature connective

tissues2 subclasses – loose

(areolar, adipose, reticular) and dense (dense regular, dense irregular)

Areolar, Adipose, Reticular, Dense Regular, Dense Irregular

Areolar TissueGel-like matrix with three

connective tissue fibersWraps and cushion organsFound throughout the body

Adipose, Reticular, Dense Regular, Dense Irregular

Adipose TissueMatrix with closely packed

adipocytesReserves food fuelsSupports and protects

organsFound under skinServes needs of active

organs

Areolar, Reticular, Dense Regular, Dense Irregular

Reticular TissueLoose ground substance

with reticular fibersReticular cells are on fiber

networkForms stroma supporting

other cell typesFound in lymphoid organs

Areolar, Adipose, Dense Regular, Dense Irregular

Dense Regular TissueParallel collagen fibersFew elastic fibersHas fibroblastsAttaches muscle to bone or

muscle and bone to boneFound in tendons and

ligaments

Areolar, Adipose, Reticular, Dense Irregular

Dense Irregular Tissue Irregularly arranged

collagen fibersSome elastic fibersHas fibroblastsWithstands tensionFound in dermis,

submucosa, organs and joints.

Areolar, Adipose, Reticular, Dense Regular

CartilageHas qualities between dense

connective tissue and boneTough but flexibleReceives nutrients by

diffusion from bloodCartilage matrix has tissue

fluidChondroblasts produce new

matrix until end of adolescence

3 types

Hyaline Cartilage, Elastic Cartilage, Fibrocartilage

Hyaline CartilageAmphorous and firm matrixChondrocytes in lacunaeSupports and reinforces,

cushions, resists compressions

Is costal cartilageFound in embryonic

skeleton, nose, ends of bones

Elastic Cartilage, Fibrocartilage

Elastic CartilageSimilar to hyaline cartilage

with more elastic fibersMaintains structure while

allowing flexibilityFound in external ear and

epiglottus

Hyaline Cartilage, Fibrocartilage

FibrocartilageSimilar to hyaline cartilage

but less firmTensile strenthAbsorbs compressive shockFound in intervertebral

discs, pubic symphisis, and discs of knee joint

Hyaline Cartilage, Elastic Cartilage

BoneHard, calcified matrix with

many collagen fibersHas osteocytes in lacunaeWell vascularizedSupports, protects, and

provides levers for muscular reaction

Stores calcium and minerals

BloodRed and white cells in

plasmaTransports respiratory

gases, nutrients, and wasteContained within blood

vessels

Muscle TissueHighly cellularResponsible for most body

movementContain myofilaments3 kinds

Skeletal Muscle, Cardiac Muscle, Smooth Muscle

Skeletal MuscleLong, cylindrical, and

multinucleateObvious striationsControl voluntary

movementAttached to bones or skin

Cardiac Muscle, Smooth Muscle

Cardiac MuscleBranching, striated cells

that interlockPropels blood into

circulationFound in walls of the heart

Skeletal Muscle, Smooth Muscle

Smooth MuscleSpindle shaped cellsCentral nucleiNo striationsPropels substances along

internal passagewaysFound in walls of hollow

organs

Skeletal Muscle, Cardiac Muscle

Nervous TissueMain component of

nervous systemContains branched neurons

with long cellular processes

Transmits electrical signalsFound in brain and spinal

cords

CreditsVoice – MeReticular, Dense Irregular, Stratified Cuboidal, and

Connective Tissue Proper slides – somewhere on the internet (the internet was down at the time and I forgot the URLs)

All other pictures - Me