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34 Cards in this Set
- Front
- Back
Gland |
one or more cells that secretes an aqueous fluid called a secretion |
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Endocrine Glands |
ductless glands that secrete hormones that travel through lymph or blood to their specific target organs |
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Exocrine Glands |
Secretions are released onto body surface or cavities; secrete products into ducts; are more numerous that endocrine glands |
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Merocrine glands |
secrete by exocytosis: Mucin, sweat, respiratory glands |
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Holocrine |
accumulate products within then rupture: oil glands on skin |
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Apocrine |
accumulate products within, but only apex ruptures: Armpit |
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Connective Tissue Functions |
Binding; And Supporting Storing reserve fuel; Protecting; Insulating; Transporting substances within the body Bass Pit |
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Connective Tissue Common characteristics |
Rich blood supply; composed of many cells; matrix of nonliving material between cells |
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Ground Substance |
(matrix) contains fibers, assists in nutrient movement, amount of protein determines viscosity (liquid, gel-like, semi-solid, solid) |
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Fibers |
Provide support and consist of collagen, elastic, and reticular |
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Collagen |
very tough, provides high tensile strength |
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Elastic |
Provide stretch and recoil |
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Reticular |
Form fiber networks (squishy nets) More stretchy then collagen, but less so than elastic |
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Cells |
Create and maintain the ground substance (matrix) |
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Immature |
blast |
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Mature |
cyte |
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Fibro |
Chondro/osteo |
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Types of Connective Tissue |
Connective Tissue Proper, Cartilage, Bone, and Blood |
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Types of connective tissue proper |
Loose areolar, loose adipose, loose reticular, dense irregular, dense regular |
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Description of Loose Areolar |
gel-like matrix containing all three fiber types |
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Description of loose adipose |
gel-like matrix, but very sparse; closely packed with fat cells, nuclei are pushed to side by fat cells |
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Description of loose reticular |
Network of reticular fibers in a typical loose matrix, reticular cells lie on the network |
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Description of Dense Regular |
Parallel collagen fibers, a few elastic fibers, major cell type is fibroblast |
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Description of Dense Irregular |
Irregularly shaped collagen fibers, some elastic fibers, primary cell type is fibroblast |
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Loose areolar Function |
wraps and cushions organs;
Macrophages phagocytize bacteria; Plays a role in inflammation; Holds and conveys tissue fluid |
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Loose adipose Function |
Reserve food fuel; Insulates against heat loss; Supports and protects organs |
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loose reticular function |
fibers form a soft internal skeleton that support other cells types |
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Dense Regular Function |
Attaches muscles to bones or muscles; bones to bones; withstands great tensile stress when pulling force is applied in one direction |
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Dense Irregular Function |
Withstands tension exerted in many directions; provides structural strength |
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Location of loose areolar |
Under epithelia; Packages organs; surrounds capillaries |
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Loose adipose location |
subcutaneous tissue; around kidneys and eyeballs; abdomen; breasts |
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Loose reticular location |
Lymph nodes; bone marrow; spleen |
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Dense Regular Location |
Tendons, Ligaments, aponeuroses |
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Dense Irregular Location |
Fibrous capsules of organs and joints; dermis of the skin; submucosa of digestive tract |