The Human Skeletal System: Answers to last week's worksheet

2. Radius Skull
Femur (thigh bone)
Shoulder joint
Rib cage
Patella (knee cap)
Spine
Clavicle (collar bone)
Pelvis
Foot bones
Directions: Fibula (chin bone)
Match the bone Tibia (ankle)
vocabulary with
the bones on the Humerus
human skeleton. Radius
Record the terms Ulna
one the mini
skeleton Hand bones
worksheet.

3. 1. What is the skeletal system made of?
Bone
Cartilage (spongy tissue between bones and
joints)
Muscle (that attach themselves and allow us
to move many different ways)

4. 2. How many bones are there is the
human skeleton?
206

5. 3. What are the largest and smallest
bones in our body?
• Largest “Femur”
• AKA thigh bone
• Usually grows to about 2 feet long
• Smallest “Stirrup”
• Located in your ear and looks like a
stirrup on a saddle used for
horseback riding
HINT

6. 4. What are the 3 main functions of
the skeletal system?
Provides structure, enables you to stand up
Protects delicate organs and tissue (e.g. your
skull protect your brain, your ribcage acts like
armour for your and HINT
Muscles attach themselves to bone, allows
you to move

7. 5. Why is it necessary for our survival?
• Without bones, you would just be a puddle of
skin and guts on the floor

8. 6. How do our bones grow?
• They fuse or grow together to form larger
bones

9. 7. How does a baby’s skeletal system compare
to a full grown adult’s skeletal system?
• Babies are made mostly of cartilage. The
cartilage grows and thickens. Over time, its
replaced by bones.
• Babies are born with over 300 bones
• A full grown adult has only 206 bones
• Why? The cartilage and bone fused together
over time as the baby grows to be an adult

10. Bone
Cartilage is
spongy tissue
often located
between
joints to
prevent them
from rubbing
Cartilage together. We
also have
cartilage in
our nose and
ears.

11. 8. Can we do anything to help our
bones grow better and stronger?
• Drink milk, eat lots of
low-fat dairy
products
• This provides lots of
calcium
• Be active. Exercise!

12. 9. What are the different ways bones
can be injured?
• Complete fracture: bone is in 2 pieces
• Greenstick fracture: crack on one side, not all the
way through
• Single fracture: broke in one place
• Communicated fracture: in more than 2 pieces or
is crushed
• Bowling fracture: bends but does not break. Most
common in kids
• Open fracture: sticking through the skin

13. Both animals and humans can break
bones …

14. 10. How does a doctor diagnose types
of breaks?
• The doctor has the
technician take an
x-ray so they can
see the damage
beneath the skin
and determine
what type of
break/fracture
occurred.

15. Carefully examine these xrays.
Can you determine which bone has been
broken or fractured?

16. Oh my! What have we here?!

17. What about here?!

18. 11. How are a break and a fracture
different?
The mean the SAME thing!
Break = Fracture
Fracture = Break
I will need two brave volunteers…

19. 12. How should a break/fracture be
treated so it heals properly?
• Step 1: determine the type of break
• Step 2: set it (re-break, surgery, pins etc.)
• Step 3: wrap it in a special bandage
• Step 4: cast is required
Role Playing
Volunteer 1: X-ray Technician
Volunteer 2: Unlucky Patient
Ms. St. Louis: Doctor

20. 13. What is the difference between a
vertebrate and an invertebrate?

21. A Few Examples
http://www.youtube.com/watch?v=HVW1ZYzj
Sa0
What would
you classify a
Sea
Cucumber
as? http://www.youtube.com/watch?v=HVW1ZYzj
Sa0

22. Let’s Infer …The Sea Cucumber
• I know a Sea Cucumber lives in the sea
• It’s long and narrow like a cucumber or a
balloon
• The Bill Nye video that we the saw yesterday
said many invertebrates live in water because
they can move despite not having a backbone
• They used a balloon to demonstrate how an
invertebrate moves

23. Skeletal Comparison Project
* You may work with a partner. Use the required format.
Must include minimal of 3 examples for each criteria.
Step 1:Choose 2 animals and compare their skeletons.
Find an image of both, copy and paste them onto your
chart. Make sure they are small enough to fit your
chart.
Step 2:Using the chart provided, list POINT FORM how
they are similar and how they are different from each
other and from the human skeletal system?
* Remember, our focus is the skeletal system NOT
where they live, what they eat, fur or no fur, etc.

24. Skeletal Comparison Chart
Skeletal Animal # 1 Animal # 2
Criteria ________________ ________________
INSERT IMAGE HERE INSERT IMAGE HERE
3 similarities between
their skeletons (A1 & A2)
3 differences between
their skeletons (A1 & A2)
3 ways A1 is the same as
a human skeleton? A2?
3 ways A1 is different
from a human skeleton?
A2?

25. Checklist
1: Poor 2: Fair 3: Good 4: Very Good 5: Excellent
Accuracy Limited Some Accurate Accurate, Accurate,
accuracy. accuracy. For comparison. comparison. thoughtful,
Simple or the most part, Original. For the most unique
easy simple or part, comparison.
comparison. easy thoughtful or
comparison. unique.
Focus Often loses Sometimes Maintains Maintains Maintains
focus loses focus good focus very good strong focus
focus
Organization Poorly A bit wordy. Fairly well Well worded. Very well
worded. Too general, a worded. For Specific and worded. Very
Vague. bit difficult to the most part, easy to specific. Clear
Difficult to understand. specific and understand. explanation.
understand. easy to
understand.

26. Checklist
0 = Incorrect, 1= Poor, 2= Fair, 3: Good, 4: Very Good, 5: Excellent
* Total project is out of 45 points.
Skeletal Animal # 1 Animal # 2 Additional marks
Criteria ________________ ________________
INSERT IMAGE HERE INSERT IMAGE HERE • 2 points for
accurate and clear
3 similarities image for A1 & A2.
between their 0,1,2,3,4,5 0,1,2,3,4,5
skeletons (A1 & A2)
•2 point for following
3 differences
between their 0,1,2,3,4,5 0,1,2,3,4,5
the required format
skeletons (A1 & A2) (e.g. chart, point
3 ways A1 is the
form).
same as a human 0,1,2,3,4,5 0,1,2,3,4,5
skeleton? A2? •1 points for citing
3 ways A1 is your sources
different from a 0,1,2,3,4,5 0,1,2,3,4,5
human skeleton? properly.
A2?