TYPES OF TISSUES

SIMPLE SQUAMOUS

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• It is a single layer of flat cells
• Functions: diffusion, filtration, some protection against friction, secretion, absorption
• Location: lining of blood and lymphatic vessels, alveoli of the lungs, lining of membranes, surface of eardrum

SIMPLE CUBOIDAL

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• It is a single layer of cube-shaped cells
• It secretes and absorbs things in the kidney
• Found in kidney, glands, brain, lungs, ovaries

SIMPLE COLUMNAR

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• Single layer of tall, narrow cells. Some have cilia or microvilli
• Some functions are moving particles out of bronchioles, moving oocytes through uterine tubes, etc.
• Locations: glands, bronchioles of lungs, auditory tubes, uterus, uterine tubes, stomach, intestines, etc.

PSUEDOSTRATIFIED COLUMNAR

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• Type of epithelial tissue that looks stratified, but actually isn't
• Functions: synthesize and secrete mucus onto free surface; transporting mucus
• Locations: lining of nasal cavity, nasal sinuses, auditory tubes, trachea, and bronchi of lungs

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• Type of epithelial tissue that looks stratified, but actually isn't
• Functions: synthesize and secrete mucus onto free surface; transporting mucus
• Locations: lining of nasal cavity, nasal sinuses, auditory tubes, trachea, and bronchi of lungs

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• Multiple layers of cells that are cuboidal in the basal layer and flatten toward the surface
• Functions: protection abrasion, caustic chemicals, water loss, and infection
• Locations: mouth, throat, layrnx, esophagus, anus, cornea, etc.

TRANSITIONAL

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• Stratified cells that change shape depending on amount of distention of organ
• Functions: accommodates fluctuations in the volume of fluid in an organ or tube, etc.
• Locations: lining of urinary bladder, ureters and superior uretha