Module 3 (EPITHELIAL TISSUE) Flashcards
COMPOSED OF CLOSELY AGGREGATED POLYHEDRAL CELLS WITH VERY LITTLE EXTRACELLULAR SUBSTANCE. THESE CELLS HAVE STRONG ADHESION AND FORM CELLULAR SHEETS THAT COVER THE SURFACE OF THE BODY AND LINE ITS CAVITIES.
EPITHELIAL TISSUE
PRINCIPAL FUNCTIONS OF EPITHELIAL TISSUE
COVERING, LINING, RPOTECTING SURFACES (SKIN)
ABSORPTION (INTESTINE)
SECRETION (EPITHELIAL CELLS OF GLANDS/ GLANDULAR EPITHELIUM)
CONTRACTILITY (MYOEPITHELIAL CELLS)
LINE ALL EXTRENAL AND INTERNAL SURFACES OF THE BODY
EPITHELIAL CELLS
EVERYTHING THAT ENTERS OR LEAVES THE BODY MUST CROSS AN
EPITHELIAL SHEET.
SPECIFIC CELLS OF CERTAIN EPITHELIA ARE ALSO HIGHLY SPECIALIZED SENSORY CELLS, SUCH AS
TASTE BUDS OR THE OLFACTORY EPITHELIUM
CONSISTS OF CLOSELY PACKED CELLS WITH LITTLE EXTRACELLULAR MATERIAL BETWEEN ADJACENT CELLS
EPITHELIAL TISSUE
ARRANGED IN CONTINUOUS SHEETS *EITHER SINGLE OR MULTIPLE LAYER
EPITHELIAL TISSUE
WITH APICAL SURFACE WHICH IS EXPOSED TO A BODY CAVITY, LINING OF AN INTERNAL ORGAN AND BASAL SURFACE ATTACHED TO THE BASEMENT MEMBRANE
EPITHELIAL TISSUE
PLENTIFUL CELL JUNCTIONS WHICH SECURE ATTACHMENT AMONG CELLS
EPITHELIAL TISSUE
AVASCULAR
EPITHELIAL TISSUE
HAVE NERVE SUPPLY
EPITHELIAL TISSUE
ATTACHED FIRMLY TO ADJACENT CONNECTIVE TISSUE WHICH HOLDS IT IN POSITION AND PREVENT IT FROM TEARING
EPITHELIAL TISSUE
HIGH CAPACITY IF RENEWAL
EPITHELIAL TISSUE
DIVERSE IN ORIGIN
EPITHELIAL TISSUE
FORMED BY CELLS SPECIALIZED TO SECRETE. THE MOLECULES TO BE SECRETED ARE GENERALLY STORED IN THE CELLS IN SMALL-MEMBRANE BOUND VESICLES CALLED SECRETORY GRANULES
GLANDULAR EPITHELIA
CLASSIFICATION OF GLANDULAR EPITHELIA
EXOCRINE GLAND
ENDOCRINE GLAND
SECRETORY PRODUCTS RELEASED INTO DUCTS *LIKE MUCUS, PERSPIRATION, SKIN OIL, EARWAX, AND DIGESTIVE ENZYMES
EXOCRINE GLANDS
SECRETORY PRODUCTS (HORMONES) DIFFUSE INTO BLOOD AFTER PASSING THROUGH EXTRACELLULAR FLUID WITHOUR FLOWING THROUGH A DUCT
ENDOCRINE GLANDS
EXOCRINE GLANDS LOCATION
SWEAT, OIL, EARWAX, AND MAMMARY GLANDS OF SKIN, DIGETSIVE GLANDS LIKE SALIVARY GLANDS, AND PANCREAS
ENDOCRINE GLANDS LOCATION
PITUIRTARY GLANDS, PINEAL GLANDS, THYROID AND PARATHYROID, ADRENAL GLANDS, PANCREAS, OVARIES, TESTES, THYMUS GLAND
EXOCRINE GLANDS FUNCTION
PRODUCE MUCUS, PERSPIRATION, OIL, EARWAX, MILK OR DIGETSIVE ENZYMES
ENDOCRINE GLANDS FUNCTION
PRODUCE HORMONES
Types of Epithelia classification
Simple Epithelium
Pseudostratified Epithelium
Stratified Epithelium
Cell Shapes
Squamous Epithelium
Cuboidal Epithelium
Columnar Epithelium
Transitional Epithelium
Flat cells
Squamous Epithelium
Cubiod/Hexagonal shaped
Cuboidal Epithelium
Tall/ Cylindrical/ Rectangular
Columnar Epithelium
Change in shape from flat to columnar due to distention or stretching
Transitional Epithelium
TISSUES IN WHICH THE CELLS ARE ORGANIZED IN LAYERS THAT COVER THE EXTERNAL SURFACE OF LINE THE CAVITIES OF THE BODY.
COVERING OR LINING EPITHELIA
LINING OF VESSELS (ENDOTHELIUM)
SEROUS LINING OF CAVITIES : PERICARDIUM, PLEURA, PERITONEUM (MESOTHELIUM)
SIMPLE SQUAMOUS EPITHELIUM
COVERING THE OVARY, THYROID
SIMPLE CUBOIDAL EPITHELIUM
LINING OF INTESTINE, GALLBLADDER
SIMPLE COLUMNAR EPITHELIUM
LINING OF TRACHEA, BRONCHI, NASAL CAVITY
PSEUDOSTRATIFIED EPITHELIUM
EPIDERMIS
STRATIFIED SQUAMOUS (KERATINIZED) EPITHELIUM
MOUTH, ESOPHAGUS, LARYNX, VAGINA, AND CANAL
STRATIFIED SQUAMOUS (NONKERATINIZED) EPITHELIUM
SWEAT GLANDS, DEVELOPING OVARIAN FOLLICLES
STRATIFIED CUBOIDAL EPITHELIUM
BLADDER, URETER
TRANSITIONAL EPITHELIUM
CONJUCTIVA
STRATIFIED COLUMNAR EPITHELIUM
