Bones and Bone Tissue
The skeletal system has 4 components
cartilage, bones, ligaments, tendons
cartilage is
avascular
bone is what tissue
connective tissue
articulation
epidermis is composed of
stratified squamous keritanized squamous epithelial tissue
functions of skeletal system
support
protection
movement
storage
blood cell production
what type of tissue
connective
bone contains three types of cells; what are their functions
osteoblasts: make bone
osteocytes: maintain bone
osteoclasts: break down bone
three types of functional classifications
synarthrosis
diarthrosis
amphiarthrosis
two types of cells located in the epidermis
keratinocytes: produce keratin
melanocytes: produce melanin; found in the stratum basale
types of bones
short, long, flat, irregular
functions of the three types of cartilage
hyaline: provide smooth surfaces for joints and support
fibro: support
elastic: support with flexibility
cell body of osteocytes sit in:
cell processes of osteocytes sit in:
cb: lacunae
cp: canaliculi
cartilagenous joints are united:
synovial joints are seperated by:
bones are united by a plate of cartilage
separated by a fluid filled joint cavity
epidermis has two types of skin
thick: palms, finger tips, soles of feet
thin: everywhere else
spongy bone has no:
spongy bone is composed of:
no osteons present; composed of trabeculae
three types of cartilage
hyaline, fibrocartilage, and elastic
extracellular matrix is composed of
osteoids and hydroxyapatites
two types of joint capsules
fibrous capsule: outer layer of joint capsule
synovial membrane: lines the inside of the fibrous capsule
dermis is made up of two layers
papillary layer
reticular layer
major structure of long bones
diaphysis
epiphysis
ephysial lines
periosteum
endosteum
found where
hyaline:
elastic:
fibro:
h: end of long bones; ribs
e: external ear; epiglotis
f: pubic symphysis, labrum
osteoid and hydroapities are what
hydro: account for hardness of bone
osteoids: secreted by osteoblasts and give bones strength
ligaments of the knee
patellar ligament
medical collateral ligament
lateral collateral ligament
anterior cruciate ligament
posterior cruciate ligament
layers of the epidermis
stratum corneum
stratum lucidum
stratum granulosum
stratum spinosum
stratum basale