main tisyusss Flashcards
Found everywhere in the bodyIncludes the most abundant and widely distributed tissues*Functions–Binds body tissues together–Supports the body–Provides protection
connective tissues
–Non-living material that surrounds living cells
extracellular matrix
poor blood supply
avascular
loose connective tissue
collagenous elastic fiber macrophage reticular
fibrous connective tissue
nuclei
bone
osteon
cartilage
condrocytes
adipose
fat droplets
blood
rbc wbc platelets plasma
–dense due to its large number ofcollagenous fibersthe fibers are organized into parallel bundlesforms tendonsandligaments
fibrous connective tissue
fills spaces between cells and fibers
ground substance
branched and stretcheable
elastic fiber
divides to produce other types of cell
stem cell and fibroblast
unbranched strong flexible
collagen fiber
branched thin forms network
reticular fiber
–binds epithelia to underlyingtissuesfunctions as packing materials, holding organs in placehas all three fibertypes––*two cell types predominate in its fibrousmesh-fibroblasts-macrophages
Loose (areolar) connectivetissue
–Most widely distributed connective tissue–Soft, pliable tissue–Contains all fiber types–Can soak up excess fluid
areolar connective tissue
–Matrix is an areolar tissue in which fat globules predominate–Many cells contain large lipid deposits–FunctionsInsulates the bodyProtects some organs*Serves as a site of fuel storage71
adipose tissue
–has an abundance of collagenous fibers embedded in a rubbery matrix made of a substance called chondroitin sulfate, a protein-carbohydratecomplex–chondrocytes secrete collagen and chondroitin sulfateTypes:–1.Hyalinecartilage2.Elasticcartilage3.Fibrocartilage
Cartilage
–Most common cartilage–Composed of:Abundant collagen fibersRubbery matrix–Entire fetal skeleton
Hyaline cartilage
–Provides elasticity–Example: supports the external ear
elastic cartilage
–Highly compressible–Example: forms cushion-like discs between vertebraeFigure
fibrocartilage
–containing cells, fibers and ground substance. There are many functions in the body in which the bone participates, such as storing minerals, providing internal support, protecting vital organs, enabling movement, and providing attachment sites for muscles and tendons
Bone connectivetissue
–Composed of:Bone cells in lacunae (cavities)Hard matrix of calcium salts*Large numbers of collagen fibers–Used to protect and support the body
Bone (osseous tissue)
–Blood cells surrounded by fluid matrix–Fibers are visible during clotting–Functions as the transport vehicle for materials
blood
–matrix consisting of water, salts, and a variety of dissolvedproteins
plasma 55%
–erythrocytes, leukocytes and cell fragments called(thrombocytes) platelets
produces by bone marrow
Formed elements(45%)
water 90% dissolved solids gases
plasma 55%
a.proteins fibrinogen (synthesized by the liver) albumin (synthesized by the liver) globulinb. supplies for cells (glucose, fats and fat-like substances, amino acids,salts)c. cell products (enzyme, hormones,antibodies)
plasma 55%
Function is to produce movementThree types–Skeletal muscle–Cardiac muscle–Smooth muscle
muscle tissue
–Can be controlled voluntarily–Cells attach to connective tissue–Cells are striated–Cells have more than one nucleus
Skeletal muscle
–Found only in the heart–Function is to pump blood (involuntary)–Cells attached to other cardiac muscle cells at intercalated disks–Cells are striated–One nucleus per cell
cardiac muscle
–Involuntary muscle–Surrounds hollow organs–Attached to other smooth muscle cells–No visible striations–One nucleus per cell
Smooth muscle
Neurons and nerve support cellsFunction is to send impulses to other areas of the body–Irritability–Conductivity
Nervous Tissue
Tissues that regenerate easily
–Epithelial tissue–Fibrous connective tissue and bone
Tissues that regenerate poorly
skeletal muscle
Tissues that are replaced largely with scar tissue
–Cardiac muscle–Nervous tissue within the brain and spinal cord
