Simple Cuboidal Epithelium

Single layers that are wide

Spherical nuclei

Secretes and absorbs

Forms walls of smallest ducts of glands and kidney tubules

TissuesGlandularStratified

SimpleColumnar

Pseudostratified

Squamous

Simple Columnar Epithelium Single layer of closely

packed cells. Lines digestive tract and rectum.

Absorption and secretion

Digestive tract lining has two distinct modifications: 10dense microvilli on the apical surface of absorptive cells 2) Goblet cells that secrete a lubricating mucus (unicellular exocrine glands)

Some have cilia

TissuesGlandularStratified

SimplePseudostratified

SquamousCuboidal

Pseudostratified EpitheliumVary in height.Only the tallest

reach the free surface of the epithelium

Gives false impression that it has several layers

Secretes and absorbs

Ciliated version containing goblet cells line the respiratory tract

TissueGlandularStratified

SimpleSquamousCuboidal Columnar

Stratified EpitheliaContains two

or more cell layers

Regenerate from below

More durable than simple epithelia

Role is protection

TissueGlandularSimple

SquamousCuboidal Columnar

Transitional

Stratified Squamous Epithelium

Most widespreadFound in areas

subjected to wear and tear

Outer layer of the body is called epidermis which is keratinized and the other type is nonkeratinized in the body.

TissueStratifiedCuboidalColumnarTransitionalGlandular

Stratified Cuboidal Epithelium

Quite rare in the body

Found in larger glands like sweat glands

Typically two layers of cuboidal cells

TissuesStratifiedSquamousColumnarTransitionalGlandular

Stratified Columnar Epithelium

Limited in the body

Some found in pharynx

Occurs in transitional areas and junctions

Only apical layer is columnar

TissuesStratifiedSquamousCuboidal

TransitionalGlandular

Transitional EpitheliumLines urinary

organsBasal layer:

Cuboidal or columnar

Apical layer: varies

Has great elasticity

TissuesStratifiedSquamousCuboidalColumnarGlandular

Glandular EpitheliaConsists of one or

more cells that make and secrete a product called secretion (aqueous fluid that contains proteins, some release lipid.)

Classified as endocrine (internally secreting) and exocrine (externally secreting)

2 types of Exocrine: multicellular and unicellular

Most have ducts

TissuesExocrineEndocrine

Endocrine GlandsDuctless glandsProduce a

hormone, which is secreted by exocytosis

Structurally diverse

Secretions vary from peptides, glycoprotiens and steroids.

TissuesGlandularExocrine

Exocrine Glands Numerous, many of

their products are familiar

Secrete products onto body surfaces or into body cavities (either the unicellular glands directly or multicellular glands via epithelium-walled duct that transports it.) These glands are diverse.

Secrete: Mucous, sweat, oil and salivary, liver (bile), pancreas (digestive enzymes) and many other secretions

TissuesGlandularEndocrineUnicellularMulticellular

Unicellular Exocrine GlandsGoblet cells

are unicellularProduce

mucin, which dissolves in water when secreted. It then forms mucus, which protects and lubricates

TissuesGlandularEndocrine

Multicellular

Multicellular Exocrine Glands

More complex than unicellular

2 basic parts: duct and secretory unit

Structural classifications: simple glands- unbranched duct. Compound glands- branched duct. And by secretory units: tubular, alvelor (flask like sacs), tubuloalveolar (both types)

Modes of secretion: merocrine-secreted by exocytosis. (examples-sweat and salvilary glands) Holocrine-secretes by rupturing the cell. (Example- oil glands.)

TissuesGlandularEndocrine Unicellular

Nervous Tissue Main component in the

nervous system Contains neurons:

highly specialized nerve cells that generate and conduct nerve impulses

Branches cells with cytoplasnic extensions, allowing them to respond to stimuli and transmit electrical impulses

Consists of various types of supporting cells. (Non conducting cells that support, insulate and protect the neurons.)

Tissues

Muscle TissueHighly cellularWell vascularizedResponsible for

most types of body movement

Possess myrofilaments, which are versions of actin and myosin filaments that bring movement or contraction in all cell types

Three types: skeletal, cardiac and smooth

TissueSkeletalCardiacSmooth

Skeletal MuscleVoluntary

muscleConnective

tissue sheets that attach to the bones of the skeleton

Form flesh of the body

Cells are also called muscle fibers

TissuesMuscleCardiacSmooth

Cardiac MuscleFound only in the

wall of the heartTo help propel

blood through the blood vessels

StriatedUninucleate and

cells branch together at junctions called intercalated discs

Involuntary muscles

TissueMuscle

Skeletal Smooth

Smooth MuscleNo visible

striationsSpindle shaped

with centrally located nucleus

Found in walls of hollow organs to squeeze substances within or out of the organ

Involuntary

TissueMuscle

Skeletal

Cardiac

CreditsALL TEXT

COURTESY OF:HUMAN ANATOMY

AND PHYSIOLOGY

7TH EDITION

BY: ELAINE N. MARIEB, R.N.,PH.D.

ANDKATJA HOEHN,

M.D.,PH.D.COPYRIGHT © 2007

PEARSON EDUCATION, INC.

PHOTOS THAT APPEAR ON THE ELASTIC, FIBROCARTILAGE,

BONE, BLOOD, AREOLAR, ADIPOSE,

REGULAR, EPITHELIUM,

PSEUDOSTRATIFIED COLUMNAR EPITHELIUM, STRATIFIED COLUMNAR EPITHELIUM,

NERVOUS TISSUE, MUSCLE TISSUE, ANDSMOOTH MUSCLE SLIDES WERE ALL

TAKEN BY :ANGELINE PIERSON

IMAGES USED ROYALTY FREE OR UNDER CREATIVE

COMMONS:TISSUES:

ROYALTY-FREE GETTY IMAGE 7301634CONNECTIVE:

WWW.FLICKR.COM/PHOTOS/EECUE/92522517

CARTILAGE:ROYALTY-FREE GETTY

IMAGE56961312HYALINE:

HTTP://FLICKR.COM/PHOTOS/AKAY/244976013/

CONNECTIVE TISSUE PROPER:

WWW.FLICKR.COM/PHOTOS/SAULIN/477230791

LOOSE:WWW.FLCIKR..COM/PHOTOS/AKAY/244985011

RETICULAR:WWW.FLCIKR.COM/PHOTOS/8474332@N04/1377314862

DENSE:WWW.FLICKR.COM/PHOTOS/AKAY/244964368

IRREGULAR:WWW.FLICKR.COM/PHOTOS/PBCHUA/750577015

EPITHELIAL:WWW.FLICR.COM/PHOTOS/AKAY/244960327

SIMPLE:WWW.FLICKR.COM/PHOTOS/AKAY/244967339

SIMPLE COLUMNAR EPITHELIUM:

WWW.FLICKR.COM/PHOTOS/13798178N08/1399343742STRATIFIED EPITHELIA:

WWW.FLICKR.COM/PHOTOS/CHRISTIRAINES/376746796STRATIFIED CUBOIDAL

EPITHELIUM:WWW.FLICKR.COM/PHOTOS/CHRISTIRAINES/376749258GLANDULAR EPITHELIA:

ROYALTY-FREE GETTY IMAGE VIS97713

ENDOCRINE GLANDS:HTTP://S184.PHOTOBUCKET.COM/ALBUMS/X294/ANAPHYSO/SLIDES%20REPRODUCTIVE%20AND%20ENDOCRINE/?ACTION=VIEW&CURRENT=IMG_9448.JPG

EXOCRINE GLANDS:HTTP://

S104.PHOTOBUCKET.COM/ALBUMS/M176/BIOL308/EXERCISE

%207-INTEGUMENTARY

%20AND%20MUSCULO-

SKELETAL%20SYS/?ACTION=VIEW&CURRENT=THINSKIN6.JPG

UNICELLULAR EXOCRINE GLANDS:

ROYALTY-FREE GETTY IMAGE 56961326

MULTICELLULAR EXOCRINE GLANDS:

ROYALTY-FREE GETTY IMAGE 56961289

MUSCLE TISSUE:WWW.FLICKR.COM/

PHOTOS/MATTHEWKENNY/

372588353SIMPLE SQUAMOUS:HTTP://FLICKR.COM/

PHOTOS/CHRISTIRAINES/376737071/

SIMPLE CUBOIDAL EPITHELIUM:

HTTP://FLICKR.COM/PHOTOS/

11151447@N00/259182432/

STRATIFIED SQUAMOUS:HTTP://FLICKR.COM/

PHOTOS/AKAY/244978565/

TRANSITIONAL EPITHELIUM:HTTP://FLICKR.COM/

PHOTOS/CHRISTIRAINES/376743413/

CARDIAC MUSCLE:HTTP://FLICKR.COM/

PHOTOS/AKAY/244989926/

SKELETAL MUSCLE:HTTP://FLICKR.COM/

PHOTOS/AJAMER/241672669/

SONGS PROVIDED BY:KITANGUS: INTO THE WEST

TRACK 1 AND 14

(I know, I look slightly different now. That’s why I left my name down in the corner!)