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Skeletal System
Vocabulary for the skeletal system
16
Science
7th Grade
03/27/2007

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Term
bone
Definition
connective tissue which provides support and structure to the human body [image]
Term
periosteum
Definition
membrane which covers the surface of the bone [image]
Term
marrow
Definition
red or yellow tissue in bones which produces red and white blood cells [image]
Term
spongy bone
Definition
porous, lightweight tissue found in bones [image]
Term
compact bone
Definition
tough, hard bone; contains bone cells and blood vessels[image]
Term
cartilage
Definition
tough, flexible tissue which covers the ends of bones and acts as a shock absorber; ex: nose & ears are made of this; cushions the knee joint [image]
Term
joint
Definition
the place where two or more bones connect [image]
Term
ligament
Definition
tough band of tissue that holds bones together [image]
Term
hinge joint
Definition
joint which allows a back and forth movement; ex: elbow or knee [image]
Term
ball and socket joint
Definition
joint which allows movement in nearly all directions; ball-like bone fits into the socket end of another bone; ex: hip joint & shoulder joint [image]
Term
fixed joint
Definition
joint which does not move; ex: joints in the skull [image]
Term
gliding joint
Definition
joint which allows bones to slide forward, backward, and sideways; ex: wrist & ankle
Term
pivot joint
Definition
joint which produces a rotating or rolling motion; ex: neck joint
Term
long bones
Definition
cylinder-shaped bones which support weight and aid in movement
Term
short bones
Definition
small bones which slide easily over one another to allow for movement
Term
flat bones
Definition
the flat design of these bones helps protect internal organs; ex: shoulder blades (scapula) & skull [image]
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