Warm Up/ Notebook Quiz
Put HW worksheets on desk to be
checked
Use only YOUR notes from yesterday to
complete “Body Organization Questions”
sheet.
This is a quiz grade!
Skeletal System
http://www.brainpop.com/health/bodysystems/skeleton/
http://kidshealth.org/PageManager.jsp?lic=1&article_set=59294&cat_id=2060
7
Number of Bones
The adult human body has 206 bones. An
infant may have from 300-350 bones at
birth.
Most of the bones in the body are in the hands and feet.
The hand has 27 bones, the foot has 26
The longest bone in
your body, the femur
(thigh bone), is about
1/4 of your height.
The smallest is the
stapes (or stirrup) in
the ear which is about
1/10 of an inch long
Humans and giraffes have the same number
of bones in their necks, 7!.
There are 14 bones in the human
face
What about teeth?
Teeth are not really bones.
Bones, unlike teeth, are
wrapped in a layer of cells
called the periosteum. The
periosteum and a few other
cell types allow bones to grow
and be remodeled over time.
Teeth are unable to do this,
which is why we have to take
care of them.
Teeth are made up of four
different layers of tissue
though.
Humans grow 2 sets of teeth in
their lifetime
Skeletal System
5 Functions:
1. Support - Bones provide the basic shape
and structure for the body
2. Protection
The skeleton protects organs in the body.
 cranium: protects the brain
 ribs/sternum: protects the lungs, heart and
some digestive organs
 pelvis: protects and supports the digestive and
reproductive organs
 spinal column: protects the spine
3. Blood Cell Production.
Bone Marrow inside bones produce and repair
new red and white blood cells
4. Movement.
The bones are the levers that help the
body move in different directions and in
different ways. Bones and muscles work
together to let the body move.
5.Mineral Storage
(Calcium)
Mineral is a
substance that the
body needs to carry
out all of our bodily
functions like thinking,
breathing and moving
around. One of the
minerals that the body
needs is calcium.
Calcium is a major
part of bone, and this
is where the body
stores its calcium.
Periosteum - membrane that lines the outer
surface of all bones, except at the
joints of long bones.
CARTILAGE - the tough but flexible tissue that
covers the ends of your bones at a
joint
Joint – the place 2 bones meet
Ligament - the tissue that connects bones to other
bones (B to B)
Tendon – the tissue that connects bone to muscle
(B to M)
VIDEO BREAK
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Write in notebook
Axial Skeleton – Made of bones the provide
support and protection
Skull
Ribs
Vertebrae
Scapula
Humerus
Write in notebook
Appendicular Skeleton – made of the bones
that allow movement
Arms (humerus, ulna radius)
Legs (femur, tibula, fibula)
Mr. Matchmaker
1. Mandible = Jawbone
2. Rib Cage = Ribs
3. Pelvis = Hipbone
4. Phalanges = Finger Bones
5. Patella = Kneecap
6. Cranium = Skull
7. Humerus = arm bone
8. Vertebrae = Back bone
9. Femur = Thighbone
10. Metatarsals = foot bones
Independent Work
Worksheet pg 25 = use dictionary
Worksheet pg 26 -28 = Read & answer
questions
Homework
1. Finish skeletal system packet
2. Test corrections due tomorrow
1. Write out question and full answer on
notebook paper and turn in with test
Warm Up – put yesterday’s packet
on desk to be checked
1. Write down the 5 functions of the skeletal
system
2. Write 1 sentence explaining each
function
5 Functions
1. Support. Bones give our body support
and shape.
2. Protection. Bones protect the organs in
our body.
3. Blood Cell Production. Blood is made
inside of bone marrow.
4. Movement. Bones and muscles work
together to let you move
5. Mineral Storage. Calcium is stored inside
bones, which we need to be healthy
Parts of a Bone
3 layers of bone (2 tissues & marrow)
Compact Bone Tissue: the hard outer layer of a
bone
Spongy Bone Tissue: The 2nd, middlel layer of
bone that stores calcium. Strong but lightweight
Bone Marrow: Center of bone, produces blood
cells
Joints
The place where 2 bones meet
Why are joints important?
Without joints, bones would not be able to move.
Why not?
Because it is at the joint that movement happens
Type of Joints
Immoveable & Slightly Movable Joints
– Lock bones together like puzzle pieces
– The place where 2 bones meet but do not
move (skull)
Type of Joints
Freely Movable Joints
– Let body bend and move
1. Ball and Socket Joint
2. Hinge Joints
3. Sliding/Gliding Joint
Ball and Socket Joint
Allows movement in almost any direction
Rotates like a ball
Ball & Socket Joint Examples
Shoulder
Hip
Hinge Joint
Allows forward and backward movement
only
Like a door opening and closing
Hinge Joints
Elbow
Knee
*not as much movement as a Ball & Socket
but it is stronger
Sliding/Gliding Joint
Lets bones slide easily across each other
Allows bending and turning (rotation)
Sliding/Gliding Joint Examples
Ankle
Wrist
Bones & Joint Practice
1.
Cranium/Skull
Skelton Worksheet
1.
Label the bones of the
skeleton (use Mr.
Matchmaker and 17B)
Circle and Label all the
different joints
2.
-
Ball & Socket- Hinge Sliding
3. Pick 2 colors
- Color all the bones in the
Appendicular skeleton 1
color and the bone in the
axial another
(17B for help)
Ball & Socket
Exit
1. What part of the bone produces blood?
2. What type of joint is in the knee?
3. How do you know this is the type of joint
in your knee?