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acetabulum
cup-shaped depression in the hip bone into which the top of the femur fits.
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acromion
part of the scapula that connects to the clavicle
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amphiarthrosis
cartilaginous joint having some movement at the union of two bones
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ankle
hinged area between the lower leg bones and the bones of the foot
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articular cartilage
cartilage at a joint
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articulation
point at which two bones join together to allow movement
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atlas
first cervical vertebrae
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axis
second cervical vertebrae
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bone
hard connective tissue that forms the skeleton of the body
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bone head
upper, rounded end of a bone
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bone phagocyte
bone cell that ingests dead bone and bone debris
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bursa
sac lined with a synovial membrane that fills the spaces between tendons and joints
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calcium
mineral important in the formation of bone
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cancellous bone
spongy bone with a latticelike structure
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cariac muscle
striated involuntary muscle of the heart
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carpus, carpal bone
wrist; wrist bone
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cartilage
flexible connective tissue found in joints, fetal skeleton, and the lining of various parts of the body
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cartilaginous disk
thick, circular mass of cartilage between the vertebrae of the spinal column
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cervical vertebrae
seven vertebrae of the spinal column located in the neck
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clavicle
curved bone of the shoulder that joins to the scapula; collar bone
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coccyx
small bone consisting of four fused vertebrae at the end of the spinal column; tailbone
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compact bone
hard bone with a tightly woven structure
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condyle
rounded surface at the end of a bone
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diaphysis
long middle section of a long bone; shaft
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diarthroses
freely movable joints
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disk
same as cartilaginous disk
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dorsal verterbrae
thoracic vertebrae
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elbow
joint between the upper arm and the forearm
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endosteum
lining of the medullary cavity
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epiphyseal plate
cartilaginous tissue that is replaced during growths years, but eventually calcifies and disappears when growth stops
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ethmoid bone
irregular bone of the face attached to the sphenoid bone
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ethmoid sinuses
sinuses on both sides of the nasal cavities between each eye and the sphenoid sinus
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fascia
sheet of fibrous tissue that encloses muscles
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femur
long bone of the thigh
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fibula
smallest long bone of the lower leg
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fissure
deep furrow or slit
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flat bones
thin, flattened bones that cover certain areas, as of the skull
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fontanelle
soft, membranous section on top of an infants skull
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foramen
opening or perforation through a bone
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foramen magnum
opening in the occipital bone through which the spinal cord passes
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fossa
depression, as in a bone
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frontal bone
large bone of the skull that forms the top of the head and forehead
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frontal sinuses
sinuses above the eyes
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heel
back, rounded portion of the foot
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humerus
long bone of the arm connecting to the scapula on top and the radius and ulna at the bottom
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ilium
wide portion of the hip bone
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insertion
point at which a muscle attaches to a movable bone
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intervertebral disk
same as cartilaginous disk
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involuntary muscle
muscle not movable at will
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irregular bones
any of a group of bones with a special shape to fit into certain areas of the skeleton, such as the skull
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ischium
one of three fused bones that form the pelvic girdle
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joint
place of joining between two or more bones
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lacrimal bone
thin, flat part of either side of the arch of a vertabra
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lamina
thin, flat part of either side of the arch of a vertebra
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ligament
sheet of fibrous tissue connecting and supporting bones; attaches bone to bone
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long bone
any bone of the extremities with a shaft
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lumbar vertebrae
five vertebrae of the lower back
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malleolus
rounded protusion of the tibia or fibula on either side of the ankle
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mandible
u-shaped bone of the lower jaw
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marrow
connective tissue filling the medullary cavity, often rich in nutrients
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mastoid process
protrusion of the temporal bone that sits behind the ear
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maxillary bone
bone of the upper jaw
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maxillary sinus
sinus on either side of the nasal cavity below the eyes
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medullary cavity
soft center cavity in bone that often holds marrow
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metacarpal
one of the five bones of the hand between the wrist and the fingers
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metaphysis
section of a long bone between the epiphysis and diaphysis
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metatarsal bones
bones of the foot between the instep (arch) and the toes
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muscle
contractile tissue that plays a major role in body movement
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musculoskeletal system
system of the body including the muscle and skeleton
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nasal bones
bones that form the bridge of the nose
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nasal cavity
cavity on either side of the nasal septum
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neural canal
space through which the spinal cord passes
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nucleus pulposus
fibrous mass in the center portion of the intervertebral disk
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occipital bone
bone that forms the lower back portion of the skull
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olecranon
curved end of the ulna to which tendons of the arm muscles attach; bony prominence of the elbow
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origin
point of which muscle attaches to stationary bone
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osseous tissue
connective tissue into which calcium salts are deposited
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ossification
hardening into bone
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osteoblast
cell that forms bone
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osteoclast
large cell that reabsorbs and removes osseous tissue
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palatine bone
bone helps that form the hard palate and nasal cavity; located behind the maxillary bones
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parietal bone
flat, curved bone on either side of the upper part of the skull
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patella
large, sesamoid bone that forms the kneecap
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pelvic cavity
cup shaped cavity formed by the large bones of the pelvic girdle; contains female reproductive organs, sigmoid colon, bladder, and rectum
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pelvis
cup shaped ring of bone and ligaments of the base of the trunk
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periosteum
fibrous membrane covering the surface of the bone
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phalanges
long bones of the fingers and toes
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phosphorus
mineral important to the formation of bone
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process
bony outgrowth or projection
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pubes
anteroinferior portion of the hip bone
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pubic symphysis
joint between the two pubic bones
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radius
shorter bone of the forearm
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rib
one of the 24 bones that form the chest wall
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sacrum
next to the last spinal vertebra made up of five fused bones; vertebra that forms part of the pelvis
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scapula
large flat bone that forms the shoulder blade
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sella turcica
bony depression in the sphenoid bone where the pituitary gland is located
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sesamoid bone
bone formed in a tendon over a joint
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shin
anterior ridge of the tibia
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short bones
square shaped bones with approximately equal dimensions on all sides
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sinus
hollow cavity, especially either of two cavities on the sides of the nose
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skeleton
bony framework of the body
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smooth muscle
fibrous muscle of internal organs that acts invoulantarily
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sphenoid bone
bone that forms the base of the skull
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sphenoid sinus
sinus above and behind the nose
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spinal column
column of vertebrae at the posterior of the body, from the neck to the coccyx
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spinous process
protrusion from the center of the vertebral arch
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spongy bone
bone with an open latticework filled with connective tissue or marrow
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sternum
long, flat bone that forms the midline of the anterior of the thorax
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striated muscle
muscle with a ribbed appearance that is controlled at will
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styloid process
peg-shaped protrusion from a bone
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sulcus
groove or furrow in a surface of a bone
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suture
joining of two bone parts with a fibrous membrane
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symphysis
type of cartilaginous joint uniting two bones
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synarthrosis
fibrous joint with no movement
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synovial fluid
fluid that serves to lubricate joints
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synovial joint
a joint that moves
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synovial membrane
connective tissue lining the cavity of joints and producing the synovial fluid
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tarsus, tarsal bones
seven bones of the instep (arch of the foot)
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temporal bone
large bone forming the base and sides of the skull
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temporomandibular joint
joint of the lower jaw between the temporal bone and the mandible
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tendon
fibrous band that connects muscle to bone or other structures
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thoracic vertebrae
12 vertebrae of the chest are
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thorax
part of the trunk between the trunk and the abdomen; chest
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tibia
larger of the two lower leg bones
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transverse process
protrusion on either side of the vertebral arch
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trochanter
bony protrusion on the upper end of the femur
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true ribs
7 upper ribs of the chest that attach to the sternum
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tubercle
slight bony elevation to which a ligament or muscle may be attached
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tuberosity
large elevation in the surface of a bone
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ulna
larger bone of the forearm
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vertebra
one of the bony segments of the spinal column
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verterbral body
main portion of the vertebra, seperate from the arches of the vertebra
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vertebral column
spinal column
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visceral muscle
smooth muscle
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vitamin d
vitamin important to the formation of bone
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voluntary muscle
striated muscle
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vomer
flat bone forming the nasal septum
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zygomatic bone
bone that forms the cheek
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