Connective Tissues Flashcards
Connective Tissue
Most abundant type of tissue in the body, the functions are strength/support, protection, and insulation
Extracellular matrix of connective tissue
Has more matrix substance and less cells
ECM composition
Collagen, Elastin, Reticular fibers, cells
Types of connective tissue
Mesenchyme, Areolar, Adipose, Reticular Tissue, Dense Regular, Dense Irregular, Elastic, Cartilage (multiple types)
Mesenchyme
Embryonic tissue, all connective tissues come from this, some remain as stem cells as adults
Areolar (structure)
gel-like matrix, scattered fibrous proteins, hyalunic acid
Areolar (cells)
Fibroblasts, macrophages/mast cells (immune cells), adipocytes (fat cells)
Areolar (functions)
Packing material, space for diffusion, reserve for salts and waters
Areolar (locations)
Most widely distributed connective tissue, surround organs and capillaries, attaches epithelium to underlying tissues
Adipose (functions)
Energy storage, insulation, supports/protects organs
Adipose (Locations)
Subcutaneous (hypodermis), around kindeys, mammary gland
Reticular (functions)
support of soft tissue of organ/small blood vessels
Reticular (locations)
Lymph nodes, spleen, bone marrow
Dense Regular (Structure)
Matrix of parallel fibers, primary fibroblasts
Dense Regular (functions)
Tensile strength/stretch resistance in 1 direction
Dense regular (Locations)
Ligaments,tendons
Dense irregular (structure)
Interwoven fibers, fibroblasts
Dense irregular (functions)
Stretch resistance in multiple directions
Dense irregular (locations)
Dermis of skin
Elastic (functions)
Allows recoil after stretch
Elastic (locations)
Walls of large arteries, walls of bronchial tubes
Elastic (appearance)
Coiled elastin, elastin fibers parallel
Cartilage
Avascular but not completely (used in compresion regions), slow to heal, widely dispersed and each is located in lacuna
Hyaline Cartilage (structure)
Matrix is transparent
Hyaline Cartilage (function)
Forms embryonic skeleton, allows the growth of long bones
Hyaline Cartilage (location)
End of long bones, growth plate, nose, trachea, costal cartilage
Elastic Cartilage (structure)
Elastin fibers, lacuna
Elastic Cartilage (functions)
Flex, shape retention
Elastic Cartilage (Locations)
External ear, epislotts
Fibrocartilage (Functions)
Absorbs compression forces, tensile strength
Fibrocartilage (location)
Intervertebral disks, articular disks, pubic symphysis
