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TISSUES & FUNCTIONS
Tissues and their functions and locations within the human body
| Tissues | Structure/Function/Location |
|---|---|
| Simple Squamous Epithelium | Structure: Thin, flat, 1 layer. Function: Diffusion, Osmosis, Filtration. Location: Lung air sacs, lining blood/lymph vessels |
| Simple Cuboidal Epithelium | Structure: cubish, 1 layer. Function: secretion & absorption. Location: Kidney tubules, glands, ovaries |
| Simple Columnar Epithelium | Structure: Column, 1 layer. Function: secretion, absorption & protection. Location: gastrointestinal tract, respiratory tract |
| Pseudostratified Ciliated Columnar Epithelium | Structure: column, usually has goblet cells & cilia. Function: secretion, absorption & protection. Location: upper respiratory tract |
| Stratified Squamous Epithelium Non-keratinized | Structure: flat-square, many layers. Function: protection. Location: esophagus, vagina, oral cavity, anal cavity |
| Stratified Squamous Epithelium Keratinized | Structure: Flat-square, many layers. Function: protection. Location: skin |
| Stratified Cuboidal Epithelium | Structure: cubish, usually 2-3 layers. Function: secretion & absorption. Location: larger ducts of glands, ovarian follicle |
| Areolar (loose) Connective | Structure: has all cell & fiber types. Function: bind organs. Location: beneath skin, between muscles |
| Adipose | Structure: cells(adipocytes). Function: insulation, protection, energy storage. Location: beneath, around heart & kidneys |
| Reticular Connective | Structure: varied cells, reticular fibers. Function: bind & support. Location: spleen & liver |
| Elastic Connective | Structure: elastic fibers & fibroblasts. Function: allow organs & structures to stretch. Location: arteries & lungs |
| Dense Regular Connective | Structure: Parallel collagen fibers. Function: strong attachment. Location: tendons & ligaments |
| Dense Irregular Connective | Structure: chaotic collagen fibers. Function: VERY strong attachment. Location: skin & heart valves |
| Blood | Structure: red & white blood cells, platelets, plasma. Function: transport, immunity, clotting. Location: blood vessels |
| Cartilage-Hyaline | Structure: chondrocytes & fine collagen fibers. Function: support & flexibility. Location: nose & trachea, ends of bones |
| Cartilage-Elastic | Structure: Chondrocytes & elastic fibers. Function: support. Location: ear, epiglottis |
| Cartilage-Fibrous | Structure: Chondrocytes, thick, wavy collagen fibers. Function: support, strong fusion. Location: intervertebral discs, knee, pubic symphysis. |
| Compact Bone | Structure: osteons. Function: support & protection. Location: everywhere. |
| Skeletal Muscle | Structure: Striated, multi-nucleated. Function: voluntary movement, heart production. Location: attached to bones |
| Smooth Muscle | Structure: Nonstriated, 1 nucleus. Function: involuntary movement. Location: organs and blood vessels |
| Cardiac Muscle | Structure: Striated branched & 1 nucleus. Function: involuntary- pump blood. Location: heart only. |
| Nervous | Structure: has neurons & neuroglia. Function: neurons send impulses, neuroglia support neurons. Location: brain, nerves, spinal cord |
| Goblet Cells | Location: intestinal walls |
| Tight Intercellular Junction | Cell membranes fuse together to prevent leakage. Location: epithelial cells in GI tract, skin |
| Desmosome Intercellular Junction | Spot welds reinforcement. Location: Epithelial skin cells. |
| Gap Intercellular Junction | Membranes connected by protein channels. Location: heart muscle, some nerve cells. |
| Organ | Two or more tissues performing a specific function together. |
| Exocrine Glands | Secretion is to the outside. Location: sweat glands, salivary glands |
| Endocrine Glands | Secretion is internal (blood or fluid). Location: thyroid gland & adrenal gland |
| Endocrine Glands | Glands that are ductless. |
| Unicellular Exocrine Glands | Glands have ducts. Composed of 1 cell. Example: goblet cell |
| Mulitcellular Exocrine Gland | Glands have ducts. Composed of many cells. Examples: sweat glands, salivary glands. |
| Merocrine Glands | Secrete fluid product only. Examples: salivary glands, pancreas & sweat glands |
| Apocrine Glands | Secrete portions of cells & fluid product. Examples: mammary glands, ceruminous glands |
| Holocrine Glands | Secrete whole cell & fluid product. Example: sebaceous glands |
Created by:
jatkinson
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