chapter 4

Created by samayaafolabi7

articular cartiledge
dense, white, connective tissue that covers the articulating surfaces of bones at joints

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TermDefinition
articular cartiledge
dense, white, connective tissue that covers the articulating surfaces of bones at joints
bone marrow
material with rich blood supply found withing the marrow cavity of lone bones, yellow marrow stores fat & red marrow is active in producing blood cells
cortical bone
dense, solid bone that covers the outer surface of all bones and is the main form of tissue in the long bones.
diaphysis
the shaft of a long bone.
endosteum
membrane lining the medullary cavity
epiphyseal plate
growth plate near the ends of long bones where osteoblast activity increases bone length.
epiphysis
the bulbous end of a long bone.
haversian canals
major passage ways running in the directive of the length of long bones
haversian system
a single haversian canal along with itś multiple canaliculi, which branch out to join with lacunae, forming a comprehensive transportation matrix for supply of nutrients and removal of waste
hematopoesis
process of blood cell formation
lacunae
tiny cavities laid out in concentric circles around the haversain canals
meduallary cavity
central hallow in long bones
ossification
process of bone formation
osetoblasts
specialized bone cells that builds new bone tissue
osetoclasts
specialized bone cells that absorb bone tissue
osetocytes
mature bone cells
oseton
a haversain system
perforating canals
large canals that connects the haversian canals
periosteum
fiberous connective tissue membrane that surrounds and protects the shaft of long bones.
remodeling
process at which adult bone can change in density, strength, and sometimes shape
trabecular bone
interior, spongy bone with a porous, honeycomb structure.
atlas
first cervical vertebra; specialized to provide the connection between the occupital bone to the skull and spinal column
axial skeleton
central, stable portion of the skeletal system, consisting the skill, spinal column, and thoracic cage
axis
the second cervical veritilora, specialized with an upward projection called the odontoid process, on which the atlas rotates
cervical region
first seven vertebrae, comprising the neck
coccyx
four fused vertebrae at the base of the spine forming the tailbone
cranium
fused, flat bonds surrounding the back of head
facial bones
bones in the face
frontanel
openings in the infant skull through which a babys pulse can be felt, these openings enabble compression of the skull during birth and brain growth.
intervertebral discs
fibrocartilaginous cushions between vertebral bodies that allow bending of the spine and help to create the normal spinals curves
lumbar region
low back region of the spine composed of 5 vertebrae
mandible
jawbone
maxillary bones
2 fused bones that form the upper jay, house upper teeth, and connect all of the outer bones of the face, exception of mandible
process
an outgrowth or projection on a bone or other body tissue
sacrum
5 fused vertebrae that form the posterior of all the pelvic gridle
skull
part of skeleton composed of all bones of the head
sternum
breastbone
sutures
joints in which irregularly grooved articulating bone sheets join closely and tightly connected by fiberous tissues
thoracic cage
bony structure surrounding heart and lungs in the thoracic cavity
thoracic region
the 12 vertebrae in the middle of the back
vertebrae
the bones making up the spinal column
vomer
play-shaped bone that comprises most of the bony nasal septum
appendicular skeleton
bones of the bodys appendages, arms and legs
carpal bones
bones of the wrist
clavicle
double curved long bone that forms part of the shoulder griddle, the collarbone
femour
thigh bone
fibulla
bone on lower leg does not bear weight
humerous
major bone on upper arm
lower extremity
bones of the hips,legs, and feet.
metacarpal bones
the 5 interior bones of the hand connecting the carpals in the wrist to the phalanges in the fingers.
patella
kneecap
pectoral gridle
bones surrounding the shoulder; including the clavicle and scapula
pelvis
bones of the pelvic griddle & the coccyx at the base of the spine
phalanges
bones of the fingers
radius
smaller of the 2 bones in the forearm; rotates around ulna.
scapula
shoulder blade
tarsal bones
bones of the ankle
tibia
major weight bearing bone of lower leg
ulna
larger bone of lower arm
upper extrmeity
bones of the shoulders, arms and hands
amphioar throsis
joint type that permits only slight motions
articular fibrocartiledge
tissue shaped like a disc or partial disc called a meniscus that provides cushioning at a joint
ball and socket joint
synovial join formed between one bone end shaped roughly like a ball and the recieving bone shaped like a socket
bursae
small capsules line with synovial membranes and filled with synovial fluid; they cushion the structures they separate
condyloid joint
type of diathrosis in which one articulates bone surface is in a oval, convex shape, and the other is shaped concave surface
diathrosis
freely moveable joints, known as the synovial joints
hinge joints
type of diathrosis that allows only kinge like movements in forward and backward directions
guilding joint
type of diathrosis that allows only sliding motion of the aritulating bones
ligaments
bonds composed of collagen and elastic fibers that connect bones to other hands
pivot joint
permits rotation around only one axis
saddle joint
bone surfaces are both shaped like the seat of riding saddle.
symphysis
type of joint in which a thin plate of hyaline cartilage seprates a disc of fibrocartiledge form the bones
synarthrosis
fiberous joint that can absorb shock, but permits little or no movement of the articulating bones
synchrondrosis
type of amphiathrosis joint in which the articulating bones are held together by a thin layer of hyaline cartilage
syndesmosis
joint at which dense, fibrous tissue bind the bones together, permitting extremely limited movement.
synovial join
a diathrodial joint
tendon
tissue band composed of collagen and elastic fibers that connects a muscle to a bone
tendon shealths
double-layered synovial structures surrounding tendons subject to friction given their position close to bones