TISSUES

CH. 4: THE FABRIC OF LIFE

TISSUE TYPES

Epithelial tissue

• Covers

Connective tissue

• Supports

Muscle tissue

• Moves

Nervous tissue

• Controls

TISSUE TYPESEpithelial Tissue

• Cover structures and organs

• Lines cavities

• 2 Types of epithelium

• Covering and Lining epithelium• Glandular epithelium

• Functions as an interface tissue

• Protection• Absorption• Filtration• Excretion• Secretion• Snesory reception

TISSUE TYPES

Special Epithelial Characteristics

• Polarity

• Specialized Contacts

• Supported by Connective Tissue

• Avascular but innervated

• Regenerative Capacity

TISSUE TYPES

Classification of epithelia

• Simple epithelia

• Stratified epithelia

Epithelia Cell types

• Squamos

• Cuboidal

• Columnar

SIMPLE EPITHELIA

Simple Squamous Epithelium

• Endothelium

• Mesothelium

SIMPLE EPITHELIA

Simple Cuboidal Epithelium

SIMPLE EPITHELIA

Simple Columnar Epithelium

SIMPLE EPITHELIA

Pseudostratified columnar epithelium

STRATIFIED EPITHELIA

Stratified Squamous Epithelium

STRATIFIED EPITHELIA

Transitional Epithelium

GLANDULAR EPITHELIA

Endocrine glands

• Produce hormones

• Ductless

GLANDULAR EPITHELIA

Exocrine glands

• Unicellular (mucous and Goblet cells)

GLANDULAR EPITHELIA

Exocrine glands (cont.)

• Multicellular

Structural classifications

• Fig 4.5

CONNECTIVE TISSUE

Common Characteristics

• Mesenchymal origin

• Varying vascularity

• Extracellular matrix

CONNECTIVE TISSUEStructural Elements

• Extracellular matrix

• Fibers• Ground substance

• Cells

• Fat Cells• WBC’s (neutrophils,

eosinophils, lymphocytes)

• Mast Cells = mediate inflammation

• Macrophages

Fig 4.7

CONNECTIVE TISSUE

Fibers

• Collagen Fibers

• Elastic Fibers

• Reticular fibers

Fig 4.7

CONNECTIVE TISSUEPrimary Cells by tissue type table 4.1

• Connective Tissue Proper

• Fibroblasts• Cartilage

• Chondroblasts/Chondrocytes

• Bone Tissue

• Osteoblasts/Osteocytes

• Blood

• Erythrocytes• Leukocytes• Platelets

CONNECTIVE TISSUE

Types of connective tissue

• Connective Tissue Proper

• Loose connective tissue: Areolar, Adipose, Reticular• Dense Connective Tissue: Regular, Irregular, Elastic

• Cartilage

• Hyaline• Elastic• Fibrocartilage

• Bone

• Blood

CONNECTIVE TISSUE: PROPER

Loose Connective Tissue

• Areolar

CONNECTIVE TISSUE: PROPER

Loose Connective Tissue

• Adipose

CONNECTIVE TISSUE: PROPER

Loose Connective Tissue:

• Reticular

CONNECTIVE TISSUE: PROPER

Dense Connective Tissue

• Dense regular

CONNECTIVE TISSUE: PROPER

Dense Connective Tissue

• Dense irregular

CONNECTIVE TISSUE: PROPER

Dense Connective Tissue

• Elastic

CONNECTIVE TISSUE: CARTILAGE

Hyaline Cartilage

CONNECTIVE TISSUE: CARTILAGE

Elastic Cartilage

CONNECTIVE TISSUE: CARTILAGE

Fibrocartilage

CONNECTIVE TISSUE

Osseous (bone) tissue

CONNECTIVE TISSUE

Blood

CONNECTIVE TISSUE

Muscle Tissue

• Skeletal Muscle

• Cardiac Muscle

• Smooth Muscle

CONNECTIVE TISSUE

Nervous Tissue

STUDY GUIDE

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