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Skeletal System
Notes
Functions of the Skeletal System
1.
2.
3.
4.
5.
Provide shape and support to body
Protect internal organs
Muscles attach to bones to move them
Blood cells produced in marrow of
bones
Store minerals calcium and phosphorus
for later use
Bones
•206
bones in
adult skeleton
•Each bone is
an organ
because it
contains two
or more
tissues
Pelvis
Joints


Places where bones
join together in the
skeleton
Two types
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
Immovable
Movable



Ball and socket
Hinge
Gliding
Ligaments
 Tough
bands
of tissue that
connect bones
to other
bones
Tendon
 Tissues
that
connect
muscle to
bone
Cartilage


A smooth, flexible
protein that covers
the ends of bones at
joints
Bones form of
cartilage and then
harden as a child
grows
Structures made of cartilage
Sharks are cartilaginous fish
Marrow
A
flexible
tissue found
inside of bones
that produces
blood cells
Thought Question

What are the functions of the skeletal
system?
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
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

Shape and support
Protection for organs
Provide muscle attachment points
Form red blood cells in bone marrow
Store minerals (Ca + P)
Thought Question

What are the organs of the skeletal
system?

Bones
Thought Question

What are structures of the skeletal
system and their functions?

Joints


Ligaments


Tissue that connects muscle to bone
Cartilage


Bands of tissue that connects bone to bone
Tendons


Places where bones join together
Smooth and flexible tissue that covers the ends of bones
Marrow

Tissue inside bones that produces blood cells
Thought Question
 What
cell organelle serves the
same purpose as the organs of
the skeletal system?
 Cell
Wall – Plant cells
 Cell Membrane – Animal cells
Thought Question

How are bones connected to bones?


By ligaments
How are bones connected to muscles?

By tendons
Thought Question

What is marrow?

The tissue inside bones that produces blood
cells
Thought Question

What structures do freshwater, marine and
terrestrial organisms have for support?
 Exoskeleton
 Calcium carbonate skeletons
 Silica skeletons
 Bony skeleton
 Cartilaginous skeleton
Thought Question

What
structures do
birds have
that provide
support?

Hollow bones
that have braces
or struts that
cross the interior
of the bone to
provide strength
Movie

Them not so dry bones video