Term
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Definition
Simple squamous epithelium
Lines abdominal, pericardial, and pleural cavities (also called serosa)
Major functions: barrier, lubrication |
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Term
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Definition
Simple squamous epithelium
Lines the lumen of all blood vessels
Major function: exchange. In CNS it also functions as a barrier. |
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Term
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Definition
Lines small ducts of exocrine glands, surface of the ovary, kidney tubules, and thyroid follicles
Major function: absorption, secretion, and active ion transport |
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Term
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Definition
Lines the stomach, intestines, colon, gallbladder, and uterus.
Major function: absorption and secretion |
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Term
| Stratified squamous, non-keratinized |
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Definition
Found in the oral cavity, esophagus, cervix, and vagina
Major functions: barrier and protection |
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Term
| Stratified squamous, keratinized |
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Definition
Found in the epidermis, some regions of the oral cavity.
Major functions: barrier, resists abrasion, and prevents fluid loss. Superficial cells of this layer will appear more eosinophilic than the superficial cells of the stratified squamous, non-keratinized due to the large amount of keratin. |
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Term
| Stratified columnar epithelium |
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Definition
Rare, present only in the conjunctiva of the eye, anorectal junction, and largest ducts of exocrine glands.
Major functions: barrier, transport. |
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Term
| Pseudostratified with stereocilia |
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Definition
Found in the epididymis and ductus deferens.
All cells are in contact with the basal lamina, but not all reach the free surface. Actually a simple epithelium.
Major functions: absorption, transport |
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Term
| Pseudostratified ciliated epithelium |
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Definition
Lines the respiratory passages
Nuclei appear to lie in various layers
All cells are in contact with the basement membrane, but not all cells reach the free surface |
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Term
| Stratified cuboidal epithelium |
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Definition
Found in sweat gland ducts, anorectal junction, and large ducts of exocrine glands.
Major functions: barrier and transport. |
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Term
| Transitional epithelium (urothelium) |
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Definition
Stratified epithelium with a surface layer that is neither columnar or squamous, cells can appear dome shaped. Shape of the surface cells changes with distension.
Found in the ureter, bladder, and upper parts of urethra. |
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Term
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Definition
Contains collagen and elastic fibers embedded in abundant ground substance
Cells present include: fibroblasts, mast cells, macrophages, and endothelial cells (capillaries)
Location: beneath epithelia that cover body surfaces, lines internal surfaces, associated with glandular epithelium, and surrounds the smallest blood vessels.
Functions: gas and nutrient/waste exchange between epithelium and blood vessels. Initial site where pathogens that breach epithelium encounter the immune system. |
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Term
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Definition
Contains a network of reticular fibers/ type III collagen.
Cells present include: reticular cells or fibroblasts (produce the fibers), immune cells embedded among the fibers
Locations: lymphatic and hemopoietic tissues, at the CT epithelial boundary, sites of wound healing.
Functions: support and mechanical strength. |
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Term
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Definition
Contains mostly collagen fibers, relatively little ground substance
Cells are sparse, primarily fibroblasts
Locations: GI and respiratory tracts, dermis of skin
Functions: collagen fibers are arranged in bundles that are oriented in various directions. This "irregular" organization provides significant strength. |
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Term
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Definition
Contains ordered and densely packed arrays of collagen fibers, very little ground substance
Cells present are specialized fibroblasts (tendinocytes) aligned along the fibers
Location: tendons, ligaments, aponeuroses
Functions: parallel arrangement and dense packing of fibers provide maximum strength. |
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Term
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Definition
Contains chondrocytes that produce the cartilage ECM
Avascular, lacks nerves and lymphatics
Surrounded by perichondrium, a layer of DCT
Located temporarily in the skeleton of the embryo, serves as a model for endochondral ossification during bone growth, in articular cartilage, cartilage of the respiratory tract (nose, larynx, trachea, bronchi), and costal cartilages. |
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Term
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Definition
Avascular
A dense network of elastic fibers and interconnecting elastic sheets are embedded within the components of hyaline cartilage matrix
Surrounded by perichondrium
Contains Type II collagen, elastic fibers, perichondrium
Found in auricle of ear, ext. auditory meatus, eustacian tube, epiglottis, and cuneiform cartilage of larynx |
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Term
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Definition
Avascular
Lacks perichondrium
Mixed tissue of cartilage and DCT
Type I and II collagen present in matrix
Contains chondrocytes and fibroblasts
Present in intervertebral disks, articular disks of knee, mandible, sternoclavicular joints, and pubic symphysis. |
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Term
| Way to distinguish b/t spinal or sensory ganglion and sympathetic ganglion. |
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Definition
Sensory ganglion have its nucleus in the center, whereas sympathetic ganglion have its nucleus off center in a variety of places.
Sensory ganglion is pseudounipolar neurons while Sympathetic ganglion is multipolar neurons. |
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Term
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Definition
Type of exocrine secretion.
Secretory product is delivered in membrane-bound vesicles to the apical surface, vesicles fuse with the PM, and contents are extruded by exocytosis.
Occurs in mammary gland, salivary gland |
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Term
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Definition
Type of exocrine secretion.
Secretory product is released in PM bound vesicles.
Occurs in mammary gland |
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Term
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Definition
Type of exocrine secretion.
Secretory products accumulates within a maturing cell, the cell undergoes apoptosis, and the secretory product and cell debris is discharged into the lumen of the gland.
Occurs in sebaceous gland. |
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Term
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Definition
Watery/protein-rich secretions.
Occurs in parotid gland, sublingual gland, submandibular gland |
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Term
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Definition
Lipid rich secretions.
Occurs in mucous gland, sublingual gland, goblet cells, submandibular gland |
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