Download What are the parts and functions of the skeletal system?

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Obligations
Muscle System

List several ways the muscular system
assist you in your everyday life.

How many muscle does a human have?


Identify 3 types of muscle and where
can they be found?
 Where can you find your busiest
muscles?
 Explain how a muscle works.
Assess your body and explain why your
muscles play a vital role in helping you
to maintain homeostasis?
Skeletal System
An organ system of
humans that is
found internally
(endoskeleton) that
is made up of
individual bones
and fused bones
Skeletal System
Functions
1. Locomotion
Movement of the entire
body or body parts from
one place to another
2. Provides
protection for
internal organs
Organs such as the heart,
lungs and brain
3. Provides our
body with shape
(form and
structure) and
support
4. Site (place) for
red blood cell
production
5. Stores minerals
Such as calcium and
phosphorus
Bone Facts
Bones are rigid organs
that form part of the
endoskeleton of some
organisms
As adults we have 206
bones
We are born with more
than 300
Skeletal System
An organ system of
humans that is
found internally
(endoskeleton) that
is made up of
individual bones
and fused bones
Parts of bone
1. Compact bone
hardest part that
gives bone strength
that contains cells,
calcium &
phosphorus
2. Marrow
flexible tissue found in
the hollow interior of
bones that produces red
blood cells
3. Periosteum
is the tough outer
membrane
4. Spongy bone
found at the ends
of long bones for
added strength
5. Canals
passageways that
bring food &
oxygen to bone
cells, contains
nerves
Cartilage
• Is flexible bone
• Is a form of connective
tissue
• Is a slippery material
• 3x more slippery than
ice
• Makes for easy
movement of
bones
•Skeleton of
newborn made
mostly of
cartilage
•Found at ends of
bones
•For protection
/Shock absorber
• Found in between
vertebrae
(cushioning)
•Creates shape of
certain body parts
Joint
Any place in
the skeletal
system that
two or more
bones meet
TYPES:
A. Immovable
joint
called a fixed joint
because no
movement
occurs there
Found in the skull/cranium
B. Pivot joint when
there is a rotation
of one bone
around another
Found in the neck
C. Ball-and-socket joint
When one bone fits
into another creating a
circular motion
Found in the shoulder and the hip
D. Hinge joint
when the two bones
creates a back and
forth direction only
E. Gliding joints
when bones slide
along each other
Found in wrist
and ankle and
vertebrae
Parts of the Human Skeleton
1. Cranium
Skull
Protects the
brain
Your
face
has 14
bones
2. Clavicle
collar bone
3. Rib cage
4. Sternum
breast bone
5. Vertebrae
backbones
Humans have 33
Humans and giraffes have
the same number of bones
in their necks.
Giraffe neck vertebrae
are just much, much
longer!
6. Humerus
upper arm bone
7. Ulna & radius
lower arm
8. Pelvis
hip bone
9. Femur thigh
bone
longest &
strongest
10. Patella
knee cap
Babies are born
without the patella
(knee bone)
it develops between
ages 2 and 5.
11. Carpals
wrist bones
12. Metacarpals
hand bones
13. Phalanges
fingers & toes
One fourth of
your bones are
located in your
feet
The only bone not broken so far during
any ski accident is one located
in your inner ear.
If you break your wrist as an
adult it will take you 8 weeks to
heal.
A five year old child who
breaks their wrist only takes 3
weeks to heal.
Bone
marrow
2 types:
1. Yellow marrow
made of fat cells
2. Red marrow
produces blood
cells
People are born with only red
bone marrow. As a person
matures, the red marrow in
many of the bones is replaced by
yellow marrow. By adulthood,
only about half of the bone
marrow is red. Red bone
marrow is found mostly in the
ribs, breastbone, shoulder
blades, collar bones, hip bones,
skull, and spine.
Parts of
the
Skeletal
system
1. Bones
2. Ligaments
3. Tendons
4. Cartilage
Ligaments
Connective
tissue that
connects bone
to bone
Tendons
Connective tissue
that connects
muscle to bone
Arthritis•Swelling
of
the joints
•Causes pain,
stiffness
Scoliosis