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Tissues

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And thistype.....

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Epithelial Tissue

General Characteristics:- Found throughout the body, covers all

body surfaces both inside and out.

- Main glandular tissue.- Attached to underlying connective tissue

by noncellular nonliving basement

membrane.- Usually has no vascular tissue - blood

supply

- Cells reproduce rapidly (rapid healing).

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Wheredoes all

the deadskin youshed go?

It takes about 27days for theouter layer of

skin to shed andbe replaced;that works out to1.5 pounds ofskin cells per

year.

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Epithelial tissue is named basedon its description

simple = single layer

stratified = multiple layerssquamous = flat

cuboidal = squarecolumnar = column (rectangle)

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http://www.youtube.com/watch?v=4Wvj0AbBDao

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Simple Squamous

Function: diffusion and filtration. Air sacs in lungs, walls of capillaries

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Simple Cuboidal

Function: Secretionand Absorption

Found in kidneys

tubules, ducts and

covering the ovaries

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Stratified cuboidal epithelium

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Simple Columnar

Function:

Secretion andAbsorption

Found in

Digestive tract

and uterus

*Contains goblet

cells to secrete

mucus

*Can have

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Stratified Squamous

Multi layer squamous, functions

in protection

Found in skin and mouth

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The ink of tattoos must be injectedbelow the basement membrane.

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Tissues often come inlayers on the body -superficial cuts on the

skin may need to bestitched if they also gothrough the underlyingtissue.

This will definitely needstitches!

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Pseudostratified ColumnarSingle layer, nuclei are uneven which gives it a

layered appearance

Can have goblet cells and cilia

Location: lining

air passages

and tubes of

the

reproductive

system

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Transitional Epithelium

Stretchable

Blocks diffusion (no leaking)

Found in the urinary bladder

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Glandular Epithelium

Cells are specialized toproduce and secrete substances

They make up the GLANDS

exocrine glands | endocrine glands

salivary, sweat hormones

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Identify the tissues

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Connective TissueGeneral Characteristics:

-Most abundant tissue in your body, foundthroughout

-Binds structures together

-Provides support, protection, framework, fillsspace, stores fat, produces blood cells, fights

infection, and helps repair tissue.

-Composed of more scattered cells with abundant

intercellular material ' matrix

-Made up of a ground substance (fluid, semi-solid)

and fibers

-Most has a good blood supply

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Types of Cells in Connective Tissue

Mast cells (prevents clots)Macrophages (consumers)

Fibroblasts (produce fibers)

Collagenous (bones,

ligaments, tendons)

Elastic (respiratory)

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Main types of FibersCollagenous fibers - strongand flexible

bones, tendons and

ligaments

Elastic fibers - very flexible,ears and vocal cords

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Categories of Connective Tissue

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Loose Connective Tissue or Areolar Tissue

Binds underlying

organs to skinand to each other

Forms delicate

thin membranesthroughout thebody

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Adi Ti (f t)

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Adipose Tissue (fat)

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Fibrous Connective Tissue

Tendons =muscles to bones

Ligaments =bones to bones

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DENSE CONNECTIVE TISSUE

CARTILAGECartilage cells are calledchondrocytesProvides support and attachments,also cushions bones

Hyaline Cartilage

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Hyaline Cartilage

Covers ends of joints, nose and respiratory

passages

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Elastic cartilageExternal Ear and

Larynx

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Hyaline cartilage

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Hyaline cartilage

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Fibrocartilage

Tough, shock absorbing

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Bone Tissue (Osseus)

Bl d Ti

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Blood Tissue

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Muscle Tissue

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Cardiac muscle

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Skeletal muscle

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Smooth muscle

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Nerve Tissue

N ti ( i l d)

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Nervous tissue (spinal cord)