EpithelialTissue

MascularTissue

NervousTissue

AnimalTissue

ConnectiveTissue

Connective

Tissue

kind of Biological tissue that supports, connects, or separates different types of tissues and organs of the body.

characterized by the abundance of extracellular components.

Composed of a specialized cells and extracellular protein fibers called matrix.

Connective TissueFunctions:

• Structural framework for body• Protect organs• Transport fluids and dissolved materials• Store energy reserves(fat) and minerals• Immunity

categories of connective tissue based on composition of matrix

Connective Tissue Proper

Fluid Connective

Tissue Supporting

Connective Tissue

Connective Tissue Proper

- Semi- solid matrix

-Fibroblast primary cell type secrete extracellular proteins (fibers).

Fibroblast

Fibers:• collagen- long, straight, unbranched• reticular- thinner, flexible, branching• elastic- branched and wavy

Connective Tissue Proper

elastic

collagen

Connective Tissue Proper

a) Loose • Areolar• Adipose

b) Dense• regular• irregular

Connective Tissue Proper

a) Loose • Areolar• Adipose

•Loose connective tissue is the most common type of connective tissue in vertebrates.

Functions:

It holds organs in place and attaches epithelial tissue to other underlying tissues.It also surrounds the blood vessels and nerves.

Connective Tissue Proper

a) Loose • Areolar• Adipose

Areolar Connective tissue

-tissue that consists of a meshwork of collagen, elastic tissue, and reticular fibres - with many connective tissue cells in between the meshwork of fibres.

Collagen fiber

Elastic fibers

Fibroblasts

Areolar Connective tissue

Functions:

•Support•Strength, and•Elasticity.

•Areolar tissue is found in many locations around the body.•One important area is the skin

Location:

Connective Tissue Proper

a) Loose • Areolar• Adipose

Adipose Connective tissue-a loose fibrous connective tissue packed with many cells (called "adipocytes") that are specialized for storage "fats".

fat-filled vacuole

Dense connective

tissue Loose connective

tissue

Adipose Connective tissue

Functions:

•Adipose tissue acts as an insulating layer, •It also has a protective function, and support around some of the major organs.•A means of energy storage.

•Adipose tissue forms a thick layer under the skin, around the kidneys and in the buttocks

Location:

Connective Tissue Proper

a) Loose • Areolar• Adipose

b) Dense• regular• irregular

Dense Connective tissue

- also called dense fibrous tissue, has fibers as its main matrix element.

Connective Tissue Proper

a) Loose • Areolar• Adipose

b) Dense• regular• irregular

Dense regular Connective tissue

-Provides connection between different tissues. The collagen fibers in dense regular connective tissue are bundled in a parallel fashion.

Includes:-tendonstough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension-Ligamentsthe fibrous tissue that connects bones to other bones

Tendons Ligaments

Dense connective

tissue Loose connective

tissueFat/Adipose tissue

Dense irregular Connective tissue

-has fibers that are not arranged in parallel bundles

Collagenirregularly arranged

Structure:

Fat/Adipose tissue

Located:

-This type of tissue is also in the protective white layer of the eyeball and in the deeper skin layers.

Function:

Fat/Adipose tissue

Connective Tissue Proper

Fluid Connective

Tissue Supporting

Connective Tissue

Fluid Connective

Tissue•Blood• Lymph

Located:

Liquid connective

tissue

Blood- plasma (watery matrix)formed elements:• Red blood cells (erythrocytes)• White blood cells (leukocytes)• Platelets2. LYMPHformed from interstitial fluidlymph vessels, lymph nodeslymphocytes (types of WBC) – immunity

Structure:

Liquid connective

tissue

Blood Vessel

erythrocytes

Function:

Liquid connective

tissue

Connective Tissue Proper

Fluid Connective

Tissue Supporting

Connective Tissue

Includes:

Liquid connective

tissue

Structural tissues – support and protectionSolid matrix, lots of fibers w/ few cells relative to matrixTwo main types1. CARTILAGE2. BONE

Located:

Fibrous connective

tissueCHONDROCYTES, found in LacunaeMatrix: solid/semi-solid (gelatinous)Ground: chondroitin sulfatesFibers: collagen, elastic, reticularCartilage is avascular

CARTILAGE

Fibrous connective

tissue

3 types of cartilage:1. Hyaline cartilage

2. Fibrocartilage

3. Elastic cartilage

BONECells: OSTEOCYTESGround: calcium salts, little fluidFibers: collagenBone has a well-developed blood supply