Animal Structure Animal Structure and Functionand Function

TissueTissueGroups of cells with a Groups of cells with a

common structure and common structure and functionfunction

TissuesTissues Epithelial TissueEpithelial Tissue

– tightly packed cells used for liningtightly packed cells used for lining Connective TissueConnective Tissue

– cells scattered through an extracellular matrixcells scattered through an extracellular matrix Nervous TissueNervous Tissue

– transmits signals (neurons)transmits signals (neurons) Muscle TissueMuscle Tissue

– fibers for contractionfibers for contraction

Epithelial Epithelial TissueTissue

Cell layersCell layers– SimpleSimple– StratifiedStratified– PseudostratifiedPseudostratified

Shape of CellsShape of Cells– CuboidalCuboidal– ColumnarColumnar– SquamousSquamous

Connective TissueConnective Tissue Collagenous FibersCollagenous Fibers

– Collagen (most abundant protein)Collagen (most abundant protein) Elastic FibersElastic Fibers

– Elastin (protein)Elastin (protein) Reticular FibersReticular Fibers

– CollagenCollagen– join connective tissuesjoin connective tissues

Connective TissueConnective Tissue Loose Connective Loose Connective

TissueTissue– binds epithelial to binds epithelial to

underlying tissueunderlying tissueFibroblasts Fibroblasts

(extracellular (extracellular fibers)fibers)

Macrophages Macrophages (immune system(immune system))

Connective TissueConnective Tissue Adipose TissueAdipose Tissue

– stores fatstores fat Fibrous Connective Fibrous Connective

TissueTissue– TendonsTendons– LigamentsLigaments

Connective TissueConnective Tissue CartilageCartilage

– chondrocyteschondrocytes BoneBone

– osteoblastsosteoblasts– Haversian systemHaversian system

Connective TissueConnective Tissue BloodBlood

– plasmaplasma– erythrocyteserythrocytes– leukocytesleukocytes– plateletsplatelets

Nervous TissueNervous Tissue NeuronsNeurons

– Cell bodyCell body– AxonsAxons– DendritesDendrites

Muscle TissueMuscle Tissue

SkeletalSkeletal CardiacCardiac SmoothSmooth