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unit 10 flashcards
unit 10!!!!!:)
41
Science
7th Grade
02/22/2012
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Term
skeletal system
 Definition
protect and support body
Term
support
 Definition
provides framework
Term
protection
 Definition
skeleton protects organs
Term
storage
 Definition
stores materials for the body
Term
movement
 Definition
joints between bones permit movement
Term
blood cell formation
 Definition
makes blood cells
Term
endocrine regulation
 Definition
bone cells release things
Term
axial skeleton
 Definition
formed by skull and vertebral column
Term
osteoblasts
 Definition
living cells that make up bone
Term
compact bone
 Definition
bone with no visible holes
Term
spongy bone
 Definition
bone with visible holes
Term
sliding and gliding joint
 Definition
wrist and ankle
Term
ball and socket joint
 Definition
hip and shoulder
Term
hinge joint
 Definition
knee and elbow
Term
pivotal joint
 Definition
head on neck
Term
ligaments
 Definition
hold joints together
Term
lever
 Definition
simple machine
Term
fulcrum
 Definition
fixed point where a ;lever pivots
Term
effort
 Definition
trying to do work; force
Term
first class lever
 Definition
fulcrum, load effort
Term
second class lever
 Definition
load, fulcrum, effort
Term
third class lever
 Definition
effort fulcrum load
Term
simple fracture
 Definition
skin intact
Term
open fracture
 Definition
bone is exposed
Term
compression fracture
 Definition
vertebrae collapses
Term
depression fracture
 Definition
skull fracture
Term
impacted fracture
 Definition
bone not destryed entirely
Term
spiral fracture
 Definition
bone twisted apart
Term
greenstick
 Definition
one side broken; other side bent
Term
skeletal muscle
 Definition
muscle attached to bones
Term
voluntary
 Definition
under your control
Term
involuntary
 Definition
not under your control
Term
tendons
 Definition
muscle to bones
Term
flexor
 Definition
bends part of body
Term
extensor
 Definition
straightens part of body
Term
aerobic exercise
 Definition
strenghthens heart
Term
resistant exercise
 Definition
muscles overcome resistance
Term
muscle strain
 Definition
over stretching or tearing of muscle
Term
tendonitis
 Definition
damaged and/or inflamed tendon
Term
anabolic steroid
 Definition
powerful chemicals to make muscles bigger
Term
problems with steroids:
 Definition
heart liver and kidney problems
high blood pressure
can stop bones from growing
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