Senior histology

Janet J. Nelson RN, CMA

….(with more than 100 types). Similar cells with extracellular matrix and fibers form tissues …..related tissues form organs …..related organs for systems and PRESTO we have a human body

1. CELLS2. FIBERS3. EXTRACELLULAR MATRIX

These components vary from tissue to tissue!!

TISSUE #1EPITHELIAL

TISSUE

LABEL SIMPLE EPITHELIAL TISSUE

http://www.cedarville.edu/personal/sullivan/histology/epithelia/index.htm

What view is this?

What view is this?

Ciliated lines most of the respiratory tract

Sweat gland ducts are examples of stratified cuboidal epithelium...usually however there are only two layers of cells.

Stratified Columnar epithelium is rare. One place you can find it is in the largest ducts of salivary glands (parotid, submandibular, etc). The basal layer of cells are cuboidal cells and the layer nearest the apical surface includes columnar cells. The large droplets are mucus, in Goblet cells.

When the tissue is stretched, the cells, especially those on the surface, become flat. This allows organs lined with transitional epithelium to change shape without damaging the epithelial lining.

Orange arrow points to free surface . Image on the left is an empty bladder. Image on right a full bladder

EXOCRINE GLANDS

EXOCRINE (such as sweat, sebaceous glands)

SEROUS (visceral and parietal)

MUCOUS

MEMBRANES

CUTANEOUS

PERISOTEUM

SYNOVIAL

MEMBRANES

TISSUE #2CONNECTIVE

TISSUE

CHARACTERISTICS:Blood supply varies

Extracellular matrix varies

Fibers vary

Notice all the different connective tissue of the elbow

http://www.cedarville.edu/personal/sullivan/histology/connective/index.htm

Reticular tissue highlymagnified

Ligament………………Tendon……………….Aponeuroses

ELASTIC CONNECTIVE TISSUE

View video of Haversian system:http://www.youtube.com/watch?

v=u1EdyPqhbpA

Cells…..Fibers…….Extracellular Matrix

HYALINE CARTILAGE C.T.

Image from intervertebral disk

ADIPOSE TISSUE C.T.

VASCULAR C.T.

TISSUE #3MUSCULAR

TISSUE

MUSCULAR TISSUESkeletal Muscle

Cardiac Muscle

Smooth (Visceral) Muscle

TISSUE #4NERVOUS

TISSUE

NERVOUS TISSUE

NEURONS & NEUROGLIA

REVIEW