places at which bones come together
joints
The knee is this type of joint.
hinge joint
material inside bones at which blood
cells are made and stored
bone marrow
About how many muscles are in the
human body?
600
strongest material in the body; makes
up the skeletal system
bone
the heart is made of this type of
muscle
cardiac muscle
These muscles work automatically
without our thought.
involuntary muscles
These are voluntary muscles
attached to bones and provide
movement.
skeletal muscles
The 5 main functions of the skeletal
system
1. Framework to provide support and
shape 2. Movement - works with
muscles and joints to help us move 3.
Protects vital organs 4. Storage stores substances need by the body
5. Manufactures - produces new
blood cells.
fracture
when a bone breaks
The hip and shoulder are this type of
joint.
ball and socket joint
involuntary muscle found inside most
organs such as the stomach,
intestines, and blood vessels
smooth muscle
These muscles respond to our
conscious thought.
A muscle that bends bones at the
joint are called flexors. A muscle that
straightens bones are called
extensors. Which is an example of an
flexor?
There are about _______ bones in
the human body.
voluntary muscles
bicep (top muscle on your arm)
206
tough supportive tissue that is softer
and more flexible than bone; also
provides cushioning between the
bones
cartilage
holds bones together at movable
joints
ligaments
sprain
an injury involving a stretched or torn
ligament
tissue that attaches muscles to bones
tendon
Voluntary muscles receive signals to
contract or relax from the
brain
The bones in your skull are this type
of joint.
fixed or immovable joints