Connective Tissue

Bust divert and abundant tissue

what is connective tissue

1- Connective tissue proper,

2- Cartilage tissue,

3- Bones tissue,

4- Blood

The four major types of connective tissue

The Loose connective tissue proper; Areolar, Adipose, Reticular

The Dense connective tissue proper; Regular, Irregular, Elastic

What are the two sub categories of Connective tissue proper and their own sub categories

Fibroblast: Make protein subunits, produce extracellular matrix

Fibrocytes: Mature fibroblast

Defense cells: white cells

Fat cells:

What cells make the The Connective tissue proper

Form basis of the skeleton

Store and carry nutrients

Surround blood vessels and nerves

Lead fight against infection

Important function of connective tissue

Special characteristics of connective tissue

Few cells, abundant extracellular matrix (ECM)

Extracellular matrix is composed of Ground substance, Fibers

Extracellular matrix is produced by cells of the connective tissue

Common embryonic origin is mesenchyme

Collagen, reticular, elastic

What fiber are found in the connective tissue proper

fibroblast, macrophages, mast cells, white blood cells

Cells inside the Areolar tissue

Function of Areolar connective tissue

wraps and cushion the organs, combats bacteria, helps with inflammation, holds and conveys tissue fluids.

Location of areoral

underlies epithelial tissue

Surrounds small nerves and blood vessels

Has structures and functions shared by other

connective tissues

Borders all other tissues in the body

Description Adipose Tissue

Closely packed adipocytes

Have nucleus pushed to one side by fat droplet

Richly vascularized

Function of adipose

Provides reserve food fuel

Insulates against heat loss

Supports and protects organs

Location of Adipose

Under skin

Around kidneys

Behind eyeballs, within abdomen, and in breasts

Hypodermis

Description of Reticular Connective Tissue

Network of reticular fibers in loose ground

substance

Function of Reticular tissue

Forms a soft, internal skeleton (stroma)

Supports other cell types

Location of loose Reticular connective tissue

Lymph nodes, bone marrow, and spleen

Description of Dense connective tissue

Resist strong pulling forces

Have more collagen than areolar connective

tissue

Dense Irregular connective tissue

Collagen fibers are thick and irregularly arranged

Contains some elastic fibers and fibroblasts

Function of Irregular tissue

Withstands tension from all directions

Provides structural strength

Location of Irregular tissue

Dermis of skin

Submucosa of digestive tract

Fibrous capsules of joints

Description of Regular tissue

Collagen fibers are parallel to the direction of pull

Fibroblasts are located between collagen fibers

Contains few elastic fibers

Has great tensile strength

Poorly vascularized

Function of dense Regular connective tissue

attaches muscle to bone

Attaches bone to bone

Withstands great stress in one direction

Location of Regular tissue

tendons and ligaments

Aponeuroses

Fascia around muscles

Function of elastic cartilage

Allows recoil after stretching

Location of Elastic cartilage

Within wall of arteries,

in certain ligaments

surrounding bronchial tubes

Location of pseudo stratified columnar

Respiratory system, ducts of large glands, sperm-carrying ducts, secretion/absorption

They propel mucus

what is the role of cilia in pseudostratified ciliated columnar epithelial tissue of the upper respiratory tract

fibrocartilage

it provide tensile strength with the ability to absorb compressive shocks; thick collagen fibers predominant with its matrix

cartilage

contains extracellular matrix that is comprised of thin collagen fibrils, a group substance, an an exceptional quantity of tissue fluids

Dense reticular connective tissue

fine fibers within its matrix form a broad, three-dimensional network like a house frame.

Collagen fibers

the strongest and most abundant type of fibers in connective tissue

location Hyaline Cartilage

it forms embryonic skeleton, covers ends of long bones, form costal cartilage of ribs, and form cartilages of nose, trachea and larynx.

Location Dense regular connective tissue

Subclass of connective tissue proper forms tendons, most ligaments, and aponeuroses

stratified columnar epithelium

It functions in protection and secretion, it is rare in the body-small amounts are found in the male urethra and in large ducts of some glands.

Tight Junctions

Preventing molecules from passing between adjacent cells of epithelial tissue

is the characteristic of all types of epithelial membranes

They consists of an epithelial tissue sheet and an underlying layer of connective tissue proper