Tissues

TissuesTissues

• Groups of cells that have similar functions and structures

• Epithelial• Muscle• Connective• Nervous• Align cells to cover

and protect them

Epithelial Connective Muscle Nervous Credits

EpithelialEpithelial

Classified by the number of layers

Classified by shape

Glandular Simple Stratified Home

GlandularGlandular

Endocrine glandsExocrine glandsMost common

types of epithelia

Epithelial Home

SimpleSimple

Consist of one layer of cells

Covering epitheliaLining epithelia

Pseudostratified Squamous Cuboidal Columnar epithelia home

PseudostratifiedPseudostratified

Actually a simple columnar epithelium

Gives the false appearance of being stratified

Is often ciliated

Simple Epithelial Home

SquamousSquamous

A classification of epithelium

Depends on shape


CuboidalCuboidal


Depends on shape


ColumnarColumnar


Depends on shapeCan be nonciliatedCan be ciliated


StratifiedStratified

Consists of two or more layers of epithelial cells

Covering epitheliaLining epithelia

Transitional Squamous Cuboidal/Columnar Epithelial Home

TransitionalTransitional

Stratified squamous epithelium

Has rounded cellsHas the ability for

cells to slide over one another to stretch an organ

Stratified Epithelial Home

SquamousSquamous

Classified based on shape

Non-keratinizedKeratinized


Cuboidal/ColumnarCuboidal/Columnar

Classification of epithelium depending on shape

Not common in the body


Connective TissuesConnective Tissues

Found in all parts of the body

Most abundant and widely distributed of tissues

Most have a large amount of blood vessels

Composed of many types of cells

Made up of noncellular and nonliving material called a matrix

Proper Cartilage Bone Blood Home

CartilageCartilage

Cartilage protects bones

Cartilage helps form bones

Found in the knees, ears, and nose

Hyaline Elastic Fibrocartilage Connective Home

HyalineHyaline

Has chondrocytes in lacunae

Found in:◦ Embryonic skeleton◦ The end of long

bones◦ Nose◦ Trachea◦ larynx

Cartilage Connective Home

ElasticElastic


•Maintains shape

•Maintains structure

•Allows flexibility

FibrocartilageFibrocartilage


•Provides tensile strength

•Absorbs compression shock

BoneBone

Proper Dense Connective Home

•Stores calcium

•Stores minerals

•Stores fat

•Marrow inside of bones is the site of hematopoiesis

ProperProper

Loose Areolar Adipose Reticular Bone Connective Home

•Embryonic•Includes:

–Areolar–Adipose–Reticular–Dense fibrous connective tissues

LooseLoose

Bone Connective Home

•Areolar

•Adipose

•Reticular

•Fat storage

AreolarAreolar


•Considered the prototype of the connective tissues

•All other connective tissues are based off of the structure of the areolar connective tissues

AdiposeAdipose


•Fat tissues

•Insulates the body

•Stores food for the body

ReticularReticular


•Loose ground substance•Forms a soft internal skeleton•Resembles fibroblastsSupports many free blood cells in lymph nodes, the spleen, and bone marrow

DenseDense

Regular Irregular Elastic BoneConnective Home

•Often referred to as dense fibrous connective tissues•Fibroblasts•Includes:

–Regular fibers–Irregular fibers–Elastic fibers

RegularRegular


•Fibroblasts

•Found in tendons

•Ligaments

•Aponeuroses

IrregularIrregular


•Fibroblasts

•Found in dermis

•Sub mucosa of the digestive tract

•Fibrous organ capsules

ElasticElastic


•Combine strength with elasticity •Dense fibrous tissues

•Occurs in regular and irregular connective tissues

BloodBlood

Connective Home

•Closed circulatory system in humans

•Open circulatory system in other animals

MuscleMuscle

Voluntary Involuntary Home

•Produces most types of body movements•Three main types of subcategories of muscle tissues are:

–Cardiac–Skeletal–smooth

VoluntaryVoluntary

Skeletal Muscle Home

•Movements of the body

•Consciously controlled

•Striated

SkeletalSkeletal

Muscle Home

•Flesh of the body

•Attached to the skeleton

InvoluntaryInvoluntary

Smooth Cardiac Muscle Home

•Unconsciously controlled movements of the body

•Happens without humans being aware

SmoothSmooth

Muscle Home

•Mainly found in the walls of hollow organs

•Normally two layers that run perpendicular to each other

CardiacCardiac

Muscle Home

•Found only in the heart

•Has intercalated discs

NervousNervous

Neurons Home

•Neuroglia

•Neurons

•Most associated with nervous system functioning

NeuronsNeurons

SensitiveHighly specializedReceives and

sends stimuli to the brain and the whole body

Nervous Home

CreditsCreditsHome

◦ Voluntary slide picture-http://images.google.com/imgres?imgurl=http://www.esg.montana.edu/esg/kla/ta/muscar.jpg&imgrefurl=http://www.esg.montana.edu/esg/kla/ta/tissues.html&h=257&w=263&sz=18&hl=en&start=9&sig2=5Uq238OaL5YOfYzZBJLH5A&tbnid=torkyIduFc7D4M:&tbnh=109&tbnw=112&ei=3MEOR4uUBo7qhwLcz6H8Cg&prev=/images%3Fq%3Dvoluntary%2Btissue%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DN

◦ Involuntary slide picture-http://micro.magnet.fsu.edu/primer/anatomy/brightfieldgallery/images/mammalcardiacmusclesmall.jpg

◦ Nervous slide picture-http://washington.uwc.edu/about/faculty/schaefer_w/TISSUES/nervous_tissue1.JPG

◦ Neurons slide picture-http://www.rndsystems.com/images/ihc/c_nt4ctx_bg.jpg

◦ Slides done by Lydia Heter

◦ Pictures by Lydia Heter and Kaitlyn Patterson

◦ Sound by Lydia Heter

◦ Glandular slide picture-http://www.microscopyu.com/galleries/pathology/colonadenocarcinoma.html

◦ Reticular slide picture-http://neuromedia.neurobio.ucla.edu/campbell/connective_tissue/wp_images/34_reticular_fibers.gif

◦ Dense slide picture-http://kentsimmons.uwinnipeg.ca/cm1504/15lab42006/DensRegularCT.jpg

◦ Regular slide picture-http://cellbio.utmb.edu/microanatomy/connective_tissue/00004525.jpg

◦ Irregular slide picture-http://medinfo.ufl.edu/year1/histo/images/m8a.jpg

◦ Skeletal slide picture-http://www.dmacc.edu/instructors/rbwollaston/Biology_Drawings/skeletal_muscle.gif

Health & Medicine

Tissues