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Simple Squamous Epithelium
- Structure: Single layer of flattened cells with disc shaped central nuclei and sparse cytoplasm.
- Function: Allows passage of materials by diffusion and filtration.
- Location: Kidney, air sacs of lungs, lining of heart, blood vessels and lymphatic vessels.
Simple Cuboidal Epithelium
- Structure: Single layer of cube like cells with large spherical central nuclei
- Function: Secretion and absorption
- Location: Kidney tubules, ducts, portions of small glands; ovary surface.
Name structures at E.O.P.
Goblet Cell & Cilia
Pseudostratified Columnar Epithelium Ciliated
- Structure: Single layer of cells of differeing heights, some not reaching the free surface; nuclei seen at different levels; may contain goblet cells or have cilia.
- Function: Secretion, particularly of mucus; propulsion of mucus by ciliary action.
- Location: Ciliated types line the trachea, most of the upper respiratiory tract.
- Non ciliated types line male's sperm carrying ducts.
Stratified Squamous Epithelium Non Keratinized
- Structure: Thick membrane, surface cells are flattened. Non Keratinized type are wet.
- Function: Protects underlying tissues in areas subject to abrasion.
- Location: Nonkeratinized type forms the moist linings of esophagus, mouth and vagina.
Name tissue type
Stratified Squamous Epithelium Keratinized
- Structure: Thick membrane of flattened cells that are dead and contain keratin but no nuclei
- Function: Protects underlying tissue
- Location: Forms the epidermis of the skin, a dry membrane.
Stratified Cuboidal Epithelium
- Structure: Usually two layers of cube like cells
- Function: Protection
- Location: Largest ducts of sweat glands, mammary glands and salivary glands.
- Structure: Resembles both stratitifed squamous and straitifed cuboidal. Surface cells dome shaped.
- Function: Stretches amd permits distension of urinary organ by contained urine.
- Location: Lines the ureters, bladder and part of the urethra.
Name the border between the epithelium and the connective tissue deep to it:
- Supporting sheet called the Basal Lamina.
- Thin, non cellular sheet of proteins secreted by epithelial cells.
The ______ _________ consists of the basal lamina and the reticular fibers of the underlying connective tissue.
The ____________ are finger like extension of the plasma membrane of apical epithelial cells and maximize surface area.
_________ are whip like extension of the apical surface membrane of certain epithelial cells.
Name the three cells found in Connective Tissue Proper:
- Defense Cells
- Fat Cells
Name the two types of cells found in cartilage:
- Chondroblasts (found in growing cartilage)
Name the two types of cells found in Bone Tissue:
Name three types of cells found in Blood:
- Erythrocytes: Red Blood Cells
- Leukocytes: White Blood Cells
Describe the matrix of Connective Tissue Proper:
- Gel like substance.
- All three fiber types: collagen, reticular and elastic.
Descsribe the matrix of cartilage:
- Gel like ground substance.
- Fibers: collagen, elastic in some.
Describe the matrix of Bone Tissue:
- Gel like ground substance calcified with inorganic calcium salts.
- Fibers: Collagen.
Describe the matrix of blood:
Identify objects at end of pointer:
- 1) Collagen Fibers
- 2) Macrophage
- 3) Elastic Fibers
- 4) Mast Cell
- 5) Fibroblasts