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Connective Tissue (CT)Found everywhere in the bodyProtect, support and bind structures
togetherFill spaces, store fat, produce blood
cellsHave extracellular matrix = non living
substance found outside of cells
MatrixProduced by CT cellsVary from fluid to rock hard substancesHelps this tissue to bear weight and
withstand stretchingContains various amounts of fibers:
-1) collagen (white and strong)
2) Elastic fibers (yellow and stretchy)3) Reticular (fine fibers)
Loose CT (Areolar)Delicate, cob-webbyPacking tissue and glueSurrounds organs and found directly
beneath skin
Dense CT (Fibrous)Lots of white fibers (white in color)Found in ligaments (connect bones to
bones)Found in tendons (connect muscles to
bones)Poor blood supply causing slow healing “Whites” of our eyes
Adipose CT (fat)Cells contain large vacuole with droplet
of fat (cells become swollen and nucleus pushed to one side)
Protects by padding organsServes as an insulator Is a reserve supply of energy
Osseous CT (bone)Rocklike hardness from matrix plus
calcium salts that separate bone cellsSupport, protect, framework
Cartilage CTTough, yet flexible3 types:Hyaline-glassy, blue-white appearance;
most common, found at ends of bones, tip of nose, tracheal rings, & connect ribs to breastbone
Cartilage continuedFibrocartilage – highly compressible &
forms disks between backboneElastic – outer ear and part of larynx
Vascular CT (blood)Has living cells in a fluid matrix called
plasmaCells are red blood cells, white blood
cells, and platelets (clot)
Muscle TissueSpecialized to contract or shorten to
move things3 types of muscle tissue
(1) Skeletal MuscleAttached to bonesContract voluntarilyLong, cylindrical, multinucleate cellsHave striations or a banded appearance
(2) Cardiac MuscleFound only in the heartContract and pump heartContract involuntarilyHas striations but are uninucleateShort, branching cells that fit together at
thick junctions called intercalated disks
(3) Smooth MuscleMake up organs like stomach, bladderNo striations (look smooth)Uninucleate and are spindle-shapedContract involuntary
Nervous TissueMake up the brain, spinal cord and
nervesCells are called neuronsConduct electrical impulses from one
part of the body to anotherCytoplasm is drawn out into long
extensions to speed up impulses