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CELLS, TISSUES, AND ORGANSPrepared by:Mrs. Sehrish

Dated 22-02-12

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OBJECTIVES

AT THE END OF THE LECTURE STUDENTS WILL BE ABLE TO:

Define the meaning of medical terminology of cells tissueand organs

Recognize and understand basic medical terms

Identify medical abbreviations

Spell and pronounce basic medical terminology

Analyze unfamiliar terms using the knowledge of word roots,suffixes and prefixes used in the medical language.

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Tissues:

Cells are organized into four basic types of tissues that perform specificfunctions

1. Epithelial tissues Epithelial tissue covers and protects body structuresand lines organs, vessels, and cavities.

2. Connective tissue Connective tissue supports and binds body structures.

It contains fibers and other nonliving materialbetween the cells. Examples are adipose (fat) tissue,cartilage, bone and blood

3. Muscle tissues Muscle tissue (root my/o) contracts to produce

movement.

4. Nervous tissue Nervous tissue (root neur/o) makes up the brain,spinal cord, and nerves. It coordinates and controlsbody responses by the transmission of electricalimpulses.

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BIOPSY:

Biopsy is the removal and examination of a living tissue to determine a diagnosis.Biopsy comes from the Greek word bios meaning life, opsis meaning vision. Togetherthey mean the visualization of living tissue.

IN VIVO:

"in the living body

IN VITRO:

literally means in glass ,and refers to procedures and experiments done in labs.

IN SITU:

means in its original place, used to refer to tumors that have not spread

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Technicolor terms

Leuk/o = white

leukemia (overabundance of white blood cells)

melan/o = black

melanoma (black tumor of the skin)

cyan/o = blue

cyanosis (blueness may be due to cold or not

enough oxygen in blood) xanth/o = yellow

xanthoma (yellow tumor)

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Tumor talkAdding - oma (a swelling) to organ and tissue word roots names tumors. Not all tumors

are malignant (cancerous). Many are benign (not life-threatening).

Aden/o = gland

adenoma

Lip/o = fat

lipoma

My/o = muscle

myoma

Lymph/o = lymph tissue

lymphoma

Carcin/o = malignant carcinoma

Osteo/o = bone

osteoma

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Thank you!