Tissues

• They come in many varieties– Connective (support)– Epithelial (covering)– Nervous (control)– And muscle (movement)

Epithelial Connective Nervous Muscle Home Credits

Epithelial tissue

• Composed of almost all cells

• Polarity is apical with basal surfaces

• Supported by connective tissue

• It has no blood vessels but is supplied by nerve fibers

• It is regenerative Simple stratified Home

Simple Epithelial tissue

• A type of epithelia with one layer of cells

• The thin layer is for easy movement

Pseudostratified cuboidal columnar squamous Back

Puedostratified Epithelial Tissue

• A single layer of cells • The cells have different

heights and the nuclei are seen at different layers

• They function in secretion and propulsion when cilia are present

Back

Simple Squamous Epithelial Tissue

• Single layer of flattened cells with disc shaped nuclei and a sparse cytoplasm

• Used for diffusion and filtration

• Two types endothelium and mesothelium

Back

Simple Cuboidal Epithelial Tissue

• Single layer of cube like cells

• Large spherical central nuclei

• Function: secretion and absorption

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Simple Columnar Epithelial Tissue

• Single layer of tall cells with oval nuclei

• Has goblet cells • Function: absorption

and secretion• Contains cilia

Back

Stratified Epithelial Tissue

• This has 2 or more cell layers

• Regenerative• Function: protection

Cuboidal columnar transitional squamous Back

Stratified Squamous Epithelial Tissue

• It has a thick membrane with many layers

• Forms external skin epidermis, linings of the esophagus, mouth and vagina

Back

Stratified Cuboidal Epithelial Tissue

• Rare in the body• 2 cell layers thick• Found in sweat and

mammary glands

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Stratified Columnar Epithelial Tissue

• Limited in the body• Found in the pharynx,

male urethra and the lining of some glandular ducts

Back

Transitional Epithelial Tissue

• Many layers • The basal cells are

cuboidal• The surface cells are

dome shaped • This tissue can be found

in the lining of the bladder uterus and part of the urethra

Back

Muscle Tissue

• Used for movement• Highly cellular• Well-Vascularized• They posses

myofilaments

Cardiac Smooth Skeletal Home

Skeletal Muscle Tissue

• This tissue is attached to the bone to the bones of the skeleton

• It’s muscle fibers are long and cylindrical cells that have many nuclei

• Striated Voluntary

Back

Cardiac Muscle Tissue

• Involuntary• Found in the wall of the

heart• Striated• 2 types of cardiac cells-

uninucleate and branching cells that together at junctions called intercalated discs

Back

Smooth Muscle Tissue

• These cells have no striations

• Spindle shaped • One central nucleus• Involuntary

Back

Nervous Tissue

• Consists of supporting cells, nonconducting, that support, insulate and protect the neurons

• Main component of the nervous system

Neurons Home

Neurons

• They generate and conduct nerve impulses

• They have branching cells with cytoplasmic extensions or processes

Back

Connective tissue

• Functions: binding and support, protection, insulation, and transportation

• Characteristics: Varying degrees of vascularity, nonliving extracellular matrix – made of ground substance, fibers, and the common tissue origin Mesenchyme

Home Bone Cartilage Blood Proper

Connective Bone tissue

• Supports and protects body structures

• It has cavities for fat storage and synthesis of blood cells

• It also has many invading blood vessels and a bone matrix

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Connective Blood tissue

• The most atypical connective tissue

• Its blood plasma has a nonliving fluid matrix

• The blood cells develop from mesenchyme

• Function: Transportation of the cardiovascular system

Back

Connective Cartilage tissue

• Tough and flexible• Avascular with no nerve

fibers• 80% water• Contains chrondoblasts,

the major cell type in growing cartilage and chrondocytes are mature cartilage cells

Back Hylaine Elastic Fibrocartilage

Connective Hylaine Cartilage tissue

• Most abundant cartilage type in the body

• Contains large amount of collagen fibers

• Provides firm support with some pliability

Back

Connective Elastic Cartilage tissue

• Elastin Fibers• Used for strength and

stretchability

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Connective Fibrocartilage tissue

• Compressible• It resists tension• It is between elastic and

Hylaine cartilage

Back

Proper Connective tissue

• This type of conective tissue has 2 subclasses– Loose – Dense

• And with in each subclass there are different types of tissues.

Back Dense: Regular and irregular Loose: Reticular Adipose Areolar

Areolar Connective tissue

• Supports and binds other tissues

• Holds body fluids• Helps fight infection• Stores nutrients as fat • This is a from of proper

loose tissue

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Adipose Connective tissue

• 90% is made up of fat• Cells are packed closely

together and look like chicken wire

• Richly vascularized • This is a from of proper

loose tissue

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Reticular tissue

• It is limited in certain cites

• It has a labyrinth like stroma

• It supports free blood cells

• This too is a from of loose connective tissue

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Dense Regular tissue

• Closely packed bundles of collagen fibers

• It resists tension • This is a from of dense

proper tissue

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Irregular connective tissue

• Made up of thick bundles of collagen fibers

• It receives tension from many directions

• This is a from of dense proper tissue

Back

Credits• Thank you To

– www.Flickr.com for the pictures– Also my group members who helped me take pictures of

tissues: Chelsea and Katherine For the picture from slide

number 29 http://farm1.static.flickr.com/82/244973937_d2c459a1d2.jpg?v=0ne Number 31 http://farm1.static.flickr.com/184/376732354_cd053cb934.jpg?v=0Number 19 http://farm1.static.flickr.com/31/92522517_4057ed9330.jpg?v=0number 22 http://farm1.static.flickr.com/87/244986694_b3ff5d61b4.jpg?v=0Number 16 http://farm2.static.flickr.com/1335/1484761688_b9624f4651.jpg?v=0Number 10 http://farm2.static.flickr.com/1315/1484770148_82064f89c7.jpg?v=0 Number 7 http://farm1.static.flickr.com/96/244967339_9fb9da5912.jpg?v=0Number 8 http://farm1.static.flickr.com/85/244978565_7149fbf7cd.jpg?v=0 Number 3 http://farm2.static.flickr.com/1154/1483908147_c8df81b052.jpg?v=0

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