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Medical Terminology Ch. 14
Musculoskeletal System
143
Medical
Undergraduate 2
04/29/2012

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Term
periosteum
Definition
outermost layer of the bone.
Term
compact bone
Definition
dense, hard layers of bone tissue that lie underneath the periosteum
Term
cancellous (spongy) bone
Definition
contains little sponge-like spaces and is encased in the layers of compact bone
Term
endosteum
Definition
membranous lining of the hollow cavity of the bone
Term
diaphysis
Definition
shaft of the long bones
Term
epiphysis
Definition
end of each long bone
Term
bone marrow
Definition
material found in the cavities of bones
Term
red marrow
Definition
thick, block-like material found in flat bones and the ends of long bones; location of blood cell formation
Term
yellow marrow
Definition
soft, fatty material found in the medullary cavity of long bones
Term
maxilla
Definition
upper jawbone
Term
mandible
Definition
lower jawbone
Term
vertebral column
Definition
made up of bones called vertebrae through which the spinal cord runs. The vertebral column protects the cord, supports the head, and provides points of attachment for ribs and muscles
Term
cervial vertebrae (C1-C7)
Definition
first set of 7 bones, forming the neck
Term
thoracic vertebrae (T1-T12)
Definition
second set of 12 vertebrae. They articulate with the 12 pairs of ribs to form the outward curve of the spine
Term
lumbar vertebrae (L1-L5)
Definition
third set of 5 larger vertebrae, which forms the inward curve of the spine
Term
sacrum
Definition
next 5 vertebrae, which fuse together to form a triangular bone positioned between the two hip bones
Term
coccyx
Definition
four vertebrae fused together to form the tailbone
Term
lamina (pl. laminae)
Definition
part of the vertebral arch
Term
clavicle
Definition
collarbone
Term
scapula
Definition
shoulder blade
Term
acromion process
Definition
extension of the scapula, which forms the high point of the shoulder
Term
sternum
Definition
breastbone
Term
xiphoid process
Definition
lower portion of the sternum
Term
humerus
Definition
upper arm bone
Term
ulna and radius
Definition
lower arm bones
Term
olecranon process
Definition
projection at the upper end of the ulna that forms the bone point of the elbow
Term
carpal bones
Definition
wrist bones
Term
metacarpal bones
Definition
hand bones
Term
phalanges (sing. phalanx)
Definition
finger and toe bones
Term
pelvic bone, hip bone
Definition
made up of three bones fused together
Term
ischium
Definition
lower, rear portion on which one sits
Term
ilium
Definition
upper, win-shaped part on each side
Term
pubis
Definition
anterior portion of the pelvic bone
Term
acetabulum
Definition
large socket in the pelvic bone for the head of the femur
Term
femur
Definition
upper leg bone
Term
tibia and fibula
Definition
lower leg bone
Term
patella (pl.patellae)
Definition
kneecap
Term
tarsal bones
Definition
ankle bones
Term
calcaneus
Definition
heel bone
Term
metatarsal bones
Definition
foot bones
Term
articular cartilage
Definition
smooth layer of gristle covering the contacting surface of joints
Term
meniscus
Definition
crescent-shaped cartilage found in the knee
Term
intervertebral disk
Definition
cartilaginous pad found between the vertebrae in the spine
Term
pubic symphysis
Definition
cartilaginous join at which two pubic bones fuse together
Term
synovia
Definition
fluid secreted by the synovial membrane and found in joint cavities
Term
bursa (pl.bursae)
Definition
fluid-filled sac that allows for easy movement of one part of a joint over another
Term
ligament
Definition
flexible, tough band of fibrous connective tissue that attaches one bone to another at a joint
Term
tendon
Definition
band of fibrous connective tissue that attaches muscle to bone
Term
aponeurosis
Definition
strong sheet of tissue that acts as a tendon to attach muscles to bone
Term
skeletal muscles (aka striated muscles)
Definition
attached to bones by tendons and make body movement possible. Skeletal muscles produce action by pulling and working in pairs. They are also known as voluntary muscles because we have control over these muscles
Term
smooth muscles (aka unstriated muscles)
Definition
located in internal organs such as the walls of blood vessels and the digestive tract. Aka involuntary muscles
Term
cardiac muscle (myocardium)
Definition
forms most of the wall of the heart. Its involuntary contraction produces the heartbeat
Term
abduction
Definition
movement of drawing away from the middle
Term
adduction
Definition
movement of drawing toward the middle
Term
inversion
Definition
turning inward
Term
eversion
Definition
turning outward
Term
extension
Definition
movement in which a limb is placed in a straight position
Term
flexion
Definition
movement in which a limb is bent
Term
pronation
Definition
movement that turns the palm down
Term
supination
Definition
movement that turns the palm up
Term
rotation
Definition
turning around its own axis
Term
carp/o
Definition
carpals (wrist bones)
Term
clavic/o, clavicul/o
Definition
clavicle
Term
cost/o
Definition
rib
Term
crani/o
Definition
cranium
Term
femor/o
Definition
femur
Term
fibul/o, perone/o
Definition
fibula
Term
humer/o
Definition
humerus
Term
ili/o
Definition
ilium
Term
ischi/o
Definition
ischium
Term
lumb/o
Definition
loin, lumbar region of the spine
Term
mandibul/o
Definition
mandible
Term
maxill/o
Definition
maxilla
Term
patell/o
Definition
patella
Term
pelv/i, pelv/o
Definition
pelvis, pelvic bone
Term
phalang/o
Definition
phalanges
Term
pub/o
Definition
pubis
Term
rachi/o
Definition
spine, vertebral column
Term
radi/o
Definition
radius
Term
sacr/o
Definition
sacrum
Term
scapul/o
Definition
scapula
Term
spondyl/o, vertebr/o
Definition
vertebra
Term
stern/o
Definition
sternum
Term
tars/o
Definition
tarsals
Term
tibi/o
Definition
tibia
Term
uln/o
Definition
ulna
Term
aponeur/o
Definition
aponeurosis
Term
arthr/o
Definition
joint
Term
burs/o
Definition
bursa (cavity)
Term
chondr/o
Definition
cartilage
Term
disk/o
Definition
intervertebral disk
Term
menisc/o
Definition
meniscus (crescent)
Term
synovi/o
Definition
synovia, synovial membrane
Term
ten/o, tend/o, tendin/o
Definition
tendon
Term
ankyl/o
Definition
crooked, stiff, bent
Term
kinesi/o
Definition
movement, motion
Term
kyph/o
Definition
hump
Term
lamin/o
Definition
lamina
Term
lord/o
Definition
bent forward
Term
myel/o
Definition
bone marrow (also means spinal cord)
Term
my/o, myos/o
Definition
muscle
Term
oste/o
Definition
bone
Term
petr/o
Definition
stone (lith/o also means stone)
Term
scoli/o
Definition
crooked, curved
Term
inter-
Definition
between
Term
supra-
Definition
above
Term
sym-, syn-
Definition
together, joined
Term
-asthenia
Definition
weakness
Term
-clasia, -clasis, -clast
Definition
break
Term
-desis
Definition
surgical fixation
Term
-physis
Definition
growth
Term
-schisis
Definition
split, fissure
Term
ankylosis
Definition
abnormal condition of stiffness (often referring to fixation of a joint, such as the result of chronic rheumatoid arthritis
Term
arthritis
Definition
inflammation of a joint (most common forms of arthritis are asteoarthritis, and rheumatoid arthritis)
Term
bursitis
Definition
inflammation of a bursa
Term
chondromalacia
Definition
softening of cartilage
Term
cranioschisis
Definition
fissure of the skull
Term
diskitis
Definition
inflammation of an intervertebral disk
Term
fibromyalgia
Definition
pain in the fibrous tissues and muscles
Term
kyphosis
Definition
abnormal condition of a hump (of the thoracic spine -aka hunchback, or humpback)
Term
lordosis
Definition
abnormal condition of bending forward ( forward curvature of the lumbar spine -aka swayback)
Term
maxillitis
Definition
inflammation of the maxilla
Term
meniscitis
Definition
inflammation of a meniscus
Term
myasthenia
Definition
muscle weakness
Term
myeloma
Definition
tumor of the bone marrow (malignant)
Term
osteitis
Definition
infammation ofthe bone
Term
osteoarthritis (OA)
Definition
inflammation of the bone and joint
Term
osteochondritis
Definition
inflammation of the bone and cartilage
Term
osteofibroma
Definition
tumor of the bone and fibrous tissue (benign)
Term
osteomalacia
Definition
softening of bones
Term
osteomyelitis
Definition
inflammation of the bone and bone marrow (caused by bacterial infection)
Term
osteopenia
Definition
abnormal reduction of bone mass (caused by inadequate replacement ofbone lost to normal bone lysis and can lead to osteoporosis)
Term
osteopetrosis
Definition
abnormal condition of stonelike bones (marblelike bones caused by increased formation of bone)
Term
osteosarcoma
Definition
malignant tumor of the bone
Term
polymyositis
Definition
inflammation of many muscles
Term
rachischisis
Definition
fissure of the vertebral column (congenital -aka spina bifida)
Term
rhabdomyolysis
Definition
dissolution of striated muscle
Term
scoliosis
Definition
abnormal (lateral) curve of the spine
Term
spondylarthritis
Definition
inflammation of the vertebral joints
Term
spondylosis
Definition
abnormal condition of the vertebra(a general term used to describe changes to the spine from osteoarthitis or ankylosis)
Term
synoviosarcoma
Definition
malignant tumor of the synovial membrane
Term
tendinitis
Definition
inflammation of a tendon (also spelled tendonitis)
Term
tenosynovitis
Definition
inflammation of the tendon and synovial membrane
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