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Bio.

Terms

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Tissue
A cooperative unit of many similar cells that perform a specific function within a multicellular organisms.
The hierarchy of structural organization in an animal
(1) Cellular level [muscle cell] (2) Tissue level [muscle tissue] (3) Organ level [heart] (4) Organ system level [cardiovascular system] (5)Organism level [consisting of many organ systems]
Epithelial Tissue
-Cells are packed tight together, cells have free apical surface, and bottom surface of basement membrane. -Functions as protection, secretion, absorption, and filtration. -Found in body coverings, body linings, and glandular tissue.
Simple Squamos (epithelial tissue)
-Forms membranes. -Lines body cavities, lungs, and capillaries. -Single layer of flat cells.
Simple Cuboidal (Epithelial tissue)
-Single layer of cube-like cells. -Forms walls of kidney tubules. -Covers ovaries.
Simple columnar (Epithelial tissue)
-Single layer of tall cells, often includes goblet cells; which produce mucus. -lines digestive tract. -Primary function will be secretion and absorption.
Stratified Squamos (Epithelial tissue)
-Cells at the free edge are flattened. -Protective covering where friction is common. -Found in skin, mouth, and esophagus.
Connective tissue
-All have extracellular matrix. -Binds tissue together, supports, and protects. -Most abundant and widely distributed.
Bone (Connective tissue)
-Hard matrix of calcium salts, a lot of collagen fibers. -Protect and support body. -lacunae (cavities)
Cartilage (connective tissue)
HYALINE: -lots of collagen fibers, rubbery matrix. -fetal skeleton and ribs. ELASTIC: -Provides elasticity. -Found in external ear, epiglottis, and trachea. FIBROCARTILAGE: -Lots of collagen fibers. -Forms cushion-like discs between vertebrae. -spinal cord
Loose (connective tissue)
-Contains all fiber types. -Soaks up excess fluid. -widely distributed.
Fibrous (connective tissue)
-main matrix element is collagen fibers. -Tendons (muscle to bone), ligaments (bone to bone)
Adipose (Connective tissue)
-many contain large lipid deposits. -insulates body, protects organs, and fuel storage. -Found directly below the skin and surrounds internal organs.
Blood (Connective tissue)
-Surrounded by fluid matrix. -transport vehicle for materials. -Found throughout entire body.
Muscle Tissue
-Produces movement.
skeletal muscle (muscle tissue)
-Lots of cylindrical muscle fibers. -Attached to the skeleton. -Brings about the movement of the various bones of the skeleton
Nervous Tissue
-Neuron and nerve support cells. -Send impulses to other areas of the body. -IRRITABILITY = able to respond to stimuli. -CONDUCTIVITY = conducts messages.
Cardiac muscle (muscle tissue)
-Found in the heart ONLY.
Smooth muscle (Muscle tissue)
-found in the walls of all the hollow organs of the body (except the heart). -regulates the flow of blood in the arteries, regulates the flow of air through the lungs, and expels urine from your urinary bladder. -Made up of thin-elongated muscle cells.

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