Vocabulary - Muscles, Bones, And Joints

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Vocabulary
STUDENT RESOURCE 7.1
INFORMATION SHEET
cartilage a fl exible tissue that cushions
skeletal muscle muscle that is attached
bones at joints
to bones and moves them
Pads of cartilage in joints keep the
The biceps and triceps in your upper
bones from rubbing against each other.
arm are skeletal muscles. When your
You also have cartilage in your nose
biceps contracts, your arm bends at
and ears.
the elbow. When your biceps relaxes
and your triceps contracts, your arm
involuntary muscle muscle that contracts
straightens.
on its own without your thinking about it
Your heart is made of involuntary
vertebra one of the bones that form an
muscle. Your heart keeps beating even if
animal’s backbone
you are sound asleep. Involuntary muscle
Your backbone is made of many
also lines your stomach and intestines.
separate bones. The backbone is also
called the spinal column.
joint a place where two or more bones
meet
voluntary muscle muscle that contracts
Your body has more than 230 joints.
when you tell it to
Examples of joints are the ball-and-
Skeletal muscles in your arm are
socket joint in your hip, the hinge joint
voluntary muscle. You decide when to
in your knee, and pivot joints in your
contract your biceps and triceps to bend
neck.
and straighten your arm.
HUMAN BODY • SECTION 7 MUSCLES, BONES, AND JOINTS

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