Looks like no one added any tags here yet for you.
What is the most abundant type of tissue by weight in the body?
connective
what is the major protein found in connective tissue?
collagen
what are the 8 functiond of connective tissue?
binds structures
provides support and protection
serves as frameworks
fills spaces (remeber there is no empty space in the body)
stores fart
produces blood cells
protects against infection
helps repair damaged tissue
what is extracellular matrix made of?
protein fibers, ground substance, and fluid
what are the specific characteristics of connective tissue?
cells are further apart, cells can divide, variation in blood supply
Matrix
abundant intercellular material, non living, varies from fluid to semisolid (areolar) to solid (bone)
collagen elastin and reticular are what
fibers
fibroblast (fixed cell)
most common, star shapedm produces protein fibers (collagen and elastin)
mast cells (fixed cells)
usually near blood bessels, releases jeparin and histamien
macrophages / histiocytes (wandering cells)
originate as whie blood cells
carry out phagocytsois
aooear in injury or infection
collageneous fibers
thick threads of proteins that run parallel bundles
major structual protein
skin, bone, cariytalige, ligaments, tendons
flexible but not stretchy
high tensile strength
fibers
elastic fibers
thins proteins of elastin
stretches easily and retains thuer shape
branch to form networks
called yellow fibers and found in vocal cords
reticular fibers
thin collagenous fibers, delicate and branch netwroks
'syupports soft mesh in tissues such as spleen, bone marrow, and lymphatic system organs
connective tissue has 2 major categories and specialized types
connective tissue proper and dense connective
what are in the connective tissue proper ctaegory
aerolar, adipose, reticular
what is in the dense connective category
dense regular, dense irregular, elastic
what are the specialized connective tissues
caryilage, bone and blood
loose connective / aerolar
forms delicate thin membranes (cobwebs), most widely distributed
contains fibroblasts, gel like ground substance, collagen, elastin
lies underneath most epithelium
has lots of nourshig blood vessles
adipose tissue /fat
develops when adipoctyes form fat droplets in cytoplasm
lines beneath skin for insulation, around kidneys, surfcae of the heart,m behind eyeballs
cushooms joints and organs
stores energy in fat molecules
reticular connective tissue
thin reticular fibers
3d network
provides framwork for organs (ex libver and spleen)
dense regular
few cells (mostly fibroblasts)
contains closely packed, thick, collagenous fibrs with fine network of eostaic (withstands pulling)
tendons (muscle to bond) and ligament (bone to bone)]
white part of eye
poor blood supply
cartilage
a rigid connective tissue that lacks a direct blood supply
rpvodies supprit framworks and attacthemnt
protects underlying tissues
forms structural models for many devleoping mondys
called “chondrocytezs” and found in “lacunae”
there are 3 types of cartilage distryinged by their matrix
hylaine, elastic, and fribrocartiliage
hylaine
msot common type of cartilage
fines collafgenous fibers, resembles white glass,
found on ends of the bones, soft part of nose, supprots front of rib cages
makes up mmsot of fetal skelton
elastic cartilage
dense networks of elastic fibers, more flexible than hyliners
in externela ear aand parts of the larynx
fibrocartilage
a very tough tissues with collage fibers in matrix
shock absorber for pressure strutues such as discs between vertebrs or cushions boens in the knee
bone
most rigid connective ttissue, hardness due to mneral salts and collagen in matrix, supports body structures, protects vital organas and attatchment fot musckles
osteocyte cells in lacuna
osteocytes are clustered around ____
osteonic canals
osteon
a cylinder shaprd unit consiting of the osetonic canal and osteocytes
canaliculi
cellular processes that connect nearby cells (gap juncyions)
blood
designed to transport substances, helps maintain homeostastic, fluid matrix (plasma)
red blood cells
transport gases
white blood cells
fight infection
plaetelets
blood clotting