Term
| Simple Squamous Epithelium |
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Definition
| Single layer of flattened cells with disc shaped central nuclei and sparse cytoplasm. |
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Term
| Function of Simple Squamous Epithelium? |
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Definition
| Allows passage of materials by diffusion and filtration in sites where protection isn't important. Secretes lubricating substances in serosae. |
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Term
| Where is Simple Squamous Epithelium Found? |
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Definition
Kidney glomeruli
Air Sacs in Lung
Lining of hear and blood vessels
Lymphatic vessels
Line ventral body cavity (serosae) |
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Term
| Simple Cuboidal epithelium |
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Definition
Single layer
Cubelike cells
Large spherical central nuceli |
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Term
| Function of simple cuboidal epithelium? |
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Definition
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Term
| Where is simple cuboidal epithelium found in the body? |
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Definition
Kidney Tubules
Ducts and secretory portions of sm. glands
Ovary Surface |
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Term
| Simple Columnar Epithelium |
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Definition
Single layer
Tall cells with round to oval nuclei
Some have vilia
Layer may contain mucus secreting goblet cells |
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Term
| Functions of simple columnar epithelium? |
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Definition
Absorption
Secretion mucus and enzymes
Ciliated type propels mucus |
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Term
| Location of simple columnar epithelium |
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Definition
Digestive Tract (non cilliated)
Gallbladder
Excretory ducts
Bronchi
Uterine tubes
Uterus |
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Term
| Pseudostratified columnar epithelium |
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Definition
Single layer of cells of differing heights
Some not reaching free surface
Nucleui seen at different levels
May bear cilia and goblet cells |
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Term
| Function of Pseudostrafified Columnar Epithelium |
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Definition
Secretion (mucous)
Propulsion of mucus by ciliary action |
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Term
| Where is pseudostratified columnar epithelium? |
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Definition
Non-ciliated male's sperm carrying ducts
Large glands
Ciliated in trachea and upper respiratory tract |
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Term
| Stratified Squamous epithelium |
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Definition
| Thick membrane composed of several layers of cell, basal cells are cuboidal or columnar and metabolically active. Surface cells are flattened. Keratinized type can be found on the surface. Basal cells are activie in mitosis and produce the cells of the more superficial layers. |
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Term
| Function of stratified squamous epithelium |
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Definition
| protects underlying tissues in areas subjected to abrasion. |
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Term
| Functions of stratified squamous epithelium? |
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Definition
Forms moist linings of the esophagus, mouth and vagina.
Keratin variety forms the epidermis of the skin. |
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Term
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Definition
Resembles both stratified and squamous and stratified cubodial.
Basal cells cuboidal or columnar.
Surface cells dome shaped of squamous-like depending on degree of organ stretch. |
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Term
| Function of transitional epithelium? |
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Definition
| Stretches readily and permits distension of urinary organ |
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Term
| Location of transitional epithelium? |
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Definition
Lines ureters
Bladder
Part of the urethra |
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Term
| Where does connective tissue arise from? |
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Definition
| Mesenchymye ( embryonic tissue) |
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Term
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Definition
| Cross linked fibrils that assemble spontaneously in extracellular space. |
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Term
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Definition
Long, Thin branching networks in extracellular matrix. Contain elastin.
Found in skin lungs and blood vessels walls. |
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Term
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Definition
Short, fine, collagenous fibers and are continuous with collagen fibers.
Branch out forming networks that surround small blood vessels and support soft tissue of organs. |
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Term
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Definition
| Young, actively mitotic cell that forms the fibers of connective tissue |
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Term
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Definition
| Actively mitotic cell of cartilage |
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Term
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Definition
Immune cells that function to detect foregin substances in the tissue spaces and initiate local inflammatory responses against them.
Found clustered deep to an epithelium of along blood vessels. |
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Term
| Loose connective tissue, Areolar |
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Definition
| Gel like matrix with all three fiber types, fibroblasts, macrophages, mast cells, wbc. |
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Term
| Function of: Loose Connective tissue Areolar |
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Definition
Wraps and cushions organs
Macrophages phagocytize bacteria
Plays important role in inflammation
Holds and conveys tissue fluid |
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Term
| Location of Loose connective tissue, Areolar |
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Definition
Under epithelia of body
Forms lamina propria of mucous membranes
Packages organs
Surrounds capillaries |
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Term
| Loose connective tissue: ADIPOSE |
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Definition
Matrix very sparse
Closely packed adipocytes with nucleus pushed to side by large fat droplet. |
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Term
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Definition
Reserve fuel
Insulates
Supports and protects organs |
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Term
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Definition
Under skin
Around kidneys
eyeballs
abdomen
breasts |
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Term
| Reticular connective tissue |
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Definition
Network of reticular fibers in a typical loose ground substance.
Reticular cells lie on the network |
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Term
| Function of Reticular connective tissue |
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Definition
| fibers form a soft internal skeleton (stroma) that supports other cell types including wbc, mast cells and macrophages. |
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Term
| Location of reticular connective tissue |
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Definition
Lymph nodes
Bone marrow
Spleen |
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Term
| Dense Regular connective tissue |
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Definition
Parallel collagen ribers
Few elastin fibers
Many fibroblasts |
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Term
| Function of dense regular connective tissue |
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Definition
| Attaches muscle to bone or to muscles, bone to bone. Withstands great tensile stress. |
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Term
| Location of dense regular |
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Definition
Tendons
Ligaments
Aponeuroses |
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Term
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Definition
Irregularly arranged collagen fibers
Some elastic fibers and many fibroblasts |
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Term
| Functions of dense irregular |
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Definition
Able to withstand tension exerted in many directions.
Provide structural support |
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Term
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Definition
| Firm matrix, collagen fibers form an imperceptible network. Chondroblasts produce the matrix and when mature lie in lacunae |
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Term
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Definition
| supports, reinforces, resilient cushioning, resists compressive stress |
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Term
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Definition
Forms most of the embryonic skeleton
Covers ends of long bones in join cavities
Forms costal cartilages of ribs
Cartilages of the nose, trachea and larynx |
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Term
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Definition
| Matrix with many elastic fibers in matrix |
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Term
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Definition
| Maintains the shape of structure while allowing great flexability |
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Term
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Definition
Supports external ear (Pinna)
Supports the epiglottis |
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Term
| Function of fibrocartilage |
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Definition
| tensile strength with ability to absorb compressive shock |
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Term
| Location of fibrocartilage |
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Definition
Intervertebral discs
Pubic symphysis
Discs of knee joint |
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Term
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Definition
| Hard, calcified matrix containing many collagen fibers. Osteocytes lie in lacunae. Very vascularized. |
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Term
| Function of Osseous tissue |
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Definition
Bone supports and protects
Provides levers for muscles to act on
Stores Ca and fat
Marrow inside bone is site for hemtapoiesis |
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Term
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Definition
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