Ch5 Musculoskeletal System Flashcards
bone marrow
soft tissue within bone; has multiple functions including blood cell production in the red bone marrow
compact bone
harder, denser bone; noncancellous bone
diaphysis
the shaft of a long bone
endosteum
membrane lining the central medullary cavity
epiphysis
the wider ends of a long bone
epiphysial plate
the growth area of a long bone
medullary cavity
space within a long bone’s shaft filled with bone marrow
metaphysis
section of a long bone between the diaphysis and epiphysis
osteoblast
bone-forming cell
osteoclast
bone-destroying cell
osteocyte
mature bone cell
periosteum
fibrous membrane surrounding a bone
spongy bone; cancellous bone or trabecular bone
mesh-like bone tissue
axial skeleton
bones of the head, vertebral column, and thorax
appendicular skeleton
bones of the upper and lower limbs and shoulder and pelvic girdles
thorax
the chest
acetabulum
the socket of the hip bone where the femur articulates
acromion
lateral upper section of the scapula that articulates with the clavicle
calcaneus
heel bone
carpal bones
the eight bones of the wrist
clavicle
collar bone
cranium
the skull; composed of eight bones excluding the face bones
femur
thigh bone
fibula
smaller, lateral bone of the lower leg
hip bone (pelvic bone)
large flat bone composed of three fused bones (ilium, ischium, and pubis) on each side
ilium
superior broad part of the hip bone
ischium
inferior, rearmost part of the hip bone
pubis
anterior lower section of the hipbone; pubic bone
humerus
upper arm bone
hyoid
u-shaped bone that supports the tongue
lamina
posterior section of the vertebral arch
mandible
lower jawbone
maxilla
upper jawbone
metacarpal bones
the five bones in the hand between the wrist and the fingers
metatarsal bones
the five bones of the foot between the ankles and the toes
patella
kneecap
phalanges
the bones of the finger and toes; there are 14 in each hand and foot
radius
outer forearm bone
ribs
long curved bones that form the bony walls of the chest
scapula
shoulder blade
sternum
anterior bone of the thorax; breastbone
tarsal bones
the seven bones of the ankle
tibia
larger inner bone of the lower leg; shin bone
ulna
inner forearm bone
vertebra
bone of the vertebral column (spine)
cervical vertebrae (C1-C7)
the seven bones of the vertebral column in the neck
thoracic vertebrae (T1-T12)
the 12 bones of the vertebral column (midspine)
lumbar vertebrae (L1-L5)
the five bones of the vertebral column (lower back)
sacrum
triangular bone consisting of five fused vertebrae inferior to the lumbar spine
coccyx
three to five fused vertebrae at the end of the spine; tailbone
xiphoid process
lower section of the sternum
articulation
the site where the bones come together; joint
bursa
a fluid-filled fibrous sac within some joints
cartilage
dense connective tissue attached to bone in many joints
synovial joint (diathrosis)
a joint that move freely and contains synovial fluid in its cavity
intervertebral disc
mass of fibrocartilage between adjacent vertebrae
ligament
band of strong connective tissue that connects bones or cartilage at a joint
meniscus
cartilage structure in the knee
suture
immovable fibrous joint found joining the skull bones
symphysis
joint that moves only slightly
synovial fluid
lubricating fluid in a freely movable joint
tendon
band of fibrous connective tissue attaching a muscle to a bone
abduction
moving away from the body’s midline
adduction
moving toward the body’s midline
circumduction
moving in a circular manner, as when throwing a ball
inversion
turning the foot sole inward
eversion
turning the foot sole outward
dorsiflexion
bending the foot upward towards the tibia
plantar flexion
bending the foot downward to point the toes
extension
motion that increases the joint angle
flexion
motion that decreases the joint angle
pronation
turning the palm downward or the foot sole outward
supination
turning the palm upward or the foot sole upward
rotation
moving in circular direction around an axis when turning a doorknob
agonist
skeletal muscle that creates a movement by contracting; prime mover
antagonist
skeletal muscle that opposes an agonist muscle and relaxes when the agonist muscle contracts
cardiac muscle
heart muscle
fascia
sheet of connective tissue covering a muscle
fascicle
bundle of muscle fibers
insertion of muscle
end of muscle attached to the bone that moves during contration
origin of muscle
end of muscle attached to bone that does not move during contraction
smooth muscle
nonstriated, voluntary muscle tissue lining organs and blood vessels
skeletal muscle
striated, voluntary muscle tissue attached to bones (striated = light and dark bands in muscle fibers)
tonicity
muscle tone; tonus
ankyl/o
stiff
arthr/o, articul/o
joint
burs/o
bursa
carp/o
carpal (wrist) bones
chondr/o
cartilage
clavic/o, clavicul/o
clavicle
cervic/o
neck
cost/o
rib
crani/o
cranium, skull
disc/o
disc or disk
fasci/o
fascia, band
femor/o
femur
fibul/o
fibula
humer/o
humerus
ili/o
ilium
ischi/o
ischium
kinesi/o, kinet/o
movement
kyph/o
humpback
lei/o
smooth
lamin/o
lamina (plate)
lord/o
curved, bent
lumb/o
lumbar region, lower back
mandibul/o
mandible (lower jawbone)
maxill/o
maxilla (upper jawbone)