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34 Cards in this Set

  • Front
  • Back

Gland

one or more cells that secretes an aqueous fluid called a secretion

Endocrine Glands

ductless glands that secrete hormones that travel through lymph or blood to their specific target organs

Exocrine Glands

Secretions are released onto body surface or cavities;


secrete products into ducts;


are more numerous that endocrine glands

Merocrine glands

secrete by exocytosis: Mucin, sweat, respiratory glands

Holocrine

accumulate products within then rupture: oil glands on skin



Apocrine

accumulate products within, but only apex ruptures: Armpit

Connective Tissue Functions

Binding;


And Supporting


Storing reserve fuel;


Protecting;


Insulating;


Transporting substances within the body




Bass Pit



Connective Tissue Common characteristics

Rich blood supply;


composed of many cells;


matrix of nonliving material between cells

Ground Substance

(matrix) contains fibers, assists in nutrient movement, amount of protein determines viscosity (liquid, gel-like, semi-solid, solid)

Fibers

Provide support and consist of collagen, elastic, and reticular

Collagen

very tough, provides high tensile strength

Elastic

Provide stretch and recoil

Reticular

Form fiber networks (squishy nets)


More stretchy then collagen, but less so than elastic

Cells

Create and maintain the ground substance (matrix)

Immature

blast

Mature

cyte

Fibro

Chondro/osteo

Types of Connective Tissue

Connective Tissue Proper, Cartilage, Bone, and Blood

Types of connective tissue proper

Loose areolar, loose adipose, loose reticular, dense irregular, dense regular

Description of Loose Areolar

gel-like matrix containing all three fiber types

Description of loose adipose

gel-like matrix, but very sparse; closely packed with fat cells, nuclei are pushed to side by fat cells

Description of loose reticular

Network of reticular fibers in a typical loose matrix, reticular cells lie on the network

Description of Dense Regular

Parallel collagen fibers, a few elastic fibers, major cell type is fibroblast

Description of Dense Irregular

Irregularly shaped collagen fibers, some elastic fibers, primary cell type is fibroblast

Loose areolar Function

wraps and cushions organs;
Macrophages phagocytize bacteria;
Plays a role in inflammation;
Holds and conveys tissue fluid


Loose adipose Function

Reserve food fuel;


Insulates against heat loss;


Supports and protects organs

loose reticular function

fibers form a soft internal skeleton that support other cells types

Dense Regular Function

Attaches muscles to bones or muscles;


bones to bones;


withstands great tensile stress when pulling force is applied in one direction

Dense Irregular Function

Withstands tension exerted in many directions; provides structural strength

Location of loose areolar

Under epithelia;


Packages organs;


surrounds capillaries

Loose adipose location

subcutaneous tissue;


around kidneys and eyeballs;


abdomen;


breasts

Loose reticular location

Lymph nodes;


bone marrow;


spleen

Dense Regular Location

Tendons,


Ligaments,


aponeuroses

Dense Irregular Location

Fibrous capsules of organs and joints;


dermis of the skin;


submucosa of digestive tract