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43 Cards in this Set
- Front
- Back
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Four types of tissues |
Epithelial Nervous Muscular Connective |
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What is tissue? |
Collection of cells and cell products that perform specific, limited functions |
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What are the characteristics of epithelial? |
Cellularity Polarity Attachment Avascularity Regrneration |
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Functions of epithelial tissue |
Provide physical protection Control permeability Provide sensation Produce specialized secretions |
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Classes of epithelial |
Bases on layers: Simple-one layer Stratified- several layers Based on shape: Squamous- thin & flat Cuboidal- square Columnar- tall, slender rectangle |
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Simple Squamous Epithelium |
Thin, flat single layer |
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Where is the simple squamous located? |
Lining of central body cavities Heart and blood vessels Potions of kidney tubules Inner lining of cornea Air sacs of lungs |
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Functions of Simple Squamous |
Reduce friction Control permeability Absorb and secrete |
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Simple Cuboidal Epithelium |
Cubed & single-layered |
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Where is simple cuboidal located? |
Glands Ducts Portions of kidney tubules Thyroid gland |
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Functions of Simple Cuboidal epithelium |
Limited protection Absorption & secretion |
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Simple columnar epithelium |
Single-layer, tall slender rectangles |
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Where is the simple columnar located? |
Digestive system: Lining of stomach Intestines Gallbladder Uterine tunes Collecting ducts of kidneys |
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Stratified Squamous Epithelium |
Thin, flat multilayered cells |
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Stratified Squamous Epithelium |
Thin, flat multilayered cells |
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Where is stratified squamous epithelium located? |
Surface of skin Lining of mouth, throat, esophagus, rectum, anus and vagina |
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Function of stratified squamous |
Provide physical protection against abrasion, pathogens, and chemical attack |
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Psuedostratified Ciliated Columnar Epithelium |
Columnar cells that apparat to be stacked but are really only one layer |
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Where is pseudo stratified ciliated columnar located? |
Respiratory system: Lining of nasal cavity, trachea, and bronchi Portions of male reproductive tract |
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Function of pseudo stratified ciliated columnar |
Protection Secretion |
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Transitional epithelium |
Muffin top cells |
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Transitional epithelium |
Muffin top cells |
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Where is transitional epithelium located? |
Urinary system: Urinary bladder Rental pelvis of kidneys Ureters |
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Function of transitional epithelium |
Permit expansion and recoil after stretching |
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Glandular epithelia |
Endocrine Exocrine |
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Endocrine |
Release hormones *no ducts |
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Exocrine |
Produce secretions *through ducts |
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Mechanism of secretion |
Merocrine Apocrine Holocrine |
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Merocrine |
Produced in Golgi apparatus Release by vesicles *sweat glands |
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Apocrine |
Produced in Golgi apparatus Released by shedding cytoplasm *mammary gland |
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Holocrine |
Released by cells bursting, killing gland cells Gland cells replaced by stem cells *sebaceous gland |
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Holocrine |
Released by cells bursting, killing gland cells Gland cells replaced by stem cells *sebaceous gland |
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Types of secretions |
Serous gland Mucous gland Mixed exocrine gland |
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Serous gland |
Watery secretions |
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Serous gland |
Watery secretions |
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Mucous glands |
Secrete mucins |
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Mixed exocrine glands |
Both serous & mucous |
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Characteristics of Connective tissue |
Specialized cells Solid extracellular protein fibers Fluid extracellular ground substance |
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Extracellular components |
Make up the matrix |
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Connective tissue |
Support & protection Transportation of materials Storage of energy reserves Defense of the body |
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Loose connective tissue |
More ground substance, less fibers *fat (adipose tissue) |
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Loose connective tissue |
More ground substance, less fibers *fat (adipose tissue) |
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Dense connective tissue |
More fibers, less ground substance *tendons |
