anatomy tissues

main fuction

connection and support, protection, insulation, storage of energy reserve, and transportation

tendons are avascular or poor blood suply

poor blood supply

cartilage is poor blood supply or avascular

avascular

extracellular matrix (ECM)

non-living portion, majority of tissue volume, determines specialized functions

Ground Substance (ECM)

clear, colorless, viscous, fills space between cells and slow movement of pathogens, and can be solid, gelatinous, or liquid

Fibers (ECM)

produced by cells, collagen fibers are in the internal skeleton, elastic fibers, and reticular fibers

Loose Tissue

less fibers, more ground substance, fat

Dense Tissue

more fibers, less ground substance, tendons

5 types of cell types

fibroblasts (immature), macrophages (phagocytic), adipocytes (identifies/eliminates micro organisms), mast cells (identifies foreign microorganisms), WBC (respond to disease)

areolar tissue matrix

soft, pliable, like cobwebs, gel-like

areolar tissue functions

strength, support, elasticity

areolar tissue locations

under skin, vessels, muscles, and nerves

adipose tissue matrix

soft, pliable

adipose tissue functions

insulation, protection, fat storage, and is vascularized

adipose tissue locations

under skin, kidneys and eyeballs, abdomen and fats

reticular tissue matrix

reticular fibers

reticular tissue functions

forms stroma (internal skeleton) of lymphoid organs

reticular tissue locations

lymph nodes, spleen, and bone marrow

dense regular tissue matrix

collagen fibers

dense regular tissue functions

support and protection and poorly vascularized

dense regular tissue locations

tendons and ligaments

dense irregular tissue matrix

collagen fibers

dense irregular tissue functions

support and protect and vascular

dense irregular tissue locations

knee

hyaline cartilage matrix

rubbery, glassy/smooth

hyaline cartilage functions

support, reduces frictions between bones

hyaline cartilage locations

ends of long bones, entire fetal skeleton prior to birth

elastic cartilage matrix

supportive but bends easily and has elastic fibers

elastic cartilage functions

support and flexibility

elastic cartilage locations

larynx, trachea, arteries, lungs, inner ear

fibrocartilage matrix

firm, thick collagen fibers

fibrocartilage functions

absorb compressive shock, limits movement

fibrocartilage locations

in between intervertebral discs, pubic bones, and discs of the knee joint

bone (osseous tissue) matrix

hard (calcium salts), flexible collagen fibers, osteocytes (bone cells), osteoblasts (immature bone cells)

bone (osseous tissue) functions

support, protect, storage, provides movement, houses blood forming tissue

blood matrix

fluid (plasma)

blood locations

blood vessels

blood functions

transport oxygen and carbon dioxide

cell in cartilage

chondrocytes in lacunae

cell in bone

osteocytes in lacunae

ground substance in cartilage

gel and water

ground substance in bone

calcium salts

fibers in cartilage

collagen, elastic, and reticular

fibers in bone

collagen

vascularity in cartilage

none

vascularity in bone

extensive

covering in cartilage

perichondrium 

covering in bone

periosteum

strength in cartilage

limited

strength in bone

strong

oxygen demands in cartilage

low

oxygen demands in bone

high

nutrient delivery in cartilage

diffusion though matrix

nutrient delivery in bone

diffusion through cytoplasm and canaliculi

repair capabilities in cartilage

limited

repair capabilities in bone

extensive