1. Fun Facts!
There are about 206 bones in a grown-up’s body. But more than half of them are located just in our hands and feet!
Humans and giraffes have the same number of bones in their necks = 8 Giraffe neck vertebrae are just much, much longer!

2. Humans and elephants are the only animals to show fear when they stumble upon a skeleton of their own kind!
People in Madagascar have a ritual called the “turning of the bones” during which the dead are dug up and entertained and reburied with a new set of gifts!!
The strongest bone in your body is your femur (your thigh bone).

3. Antlers and horns are not the same thing
Antlers are made entirely of bone, while horns are not.
Elephant tusks are bones.

4. During medieval times, doctors in Europe and the Middle East thought mummies had medicinal value. The ground up thousands of Egyptian mummies and put them in expensive medicines for their patients!!

5. 1. How is skeleton like the frame in a building?
2. Baby = 275, Adult = 206
3. Bones fuse together as you get older

7. 3. Skeletal System Provides shape and support for the body.
Enables you to move
Protects your internal organs
Produces blood cells
Stores minerals in bone and fat in marrow.

8. 4. The backbone (vertebrae) is the center of the skeleton.
26 Bones
5. Bone protect important organs.
Skull protects brain
Ribs protect your heart and lungs

9. 6. A joint is a place in the body where two bones come together.
7. Joints allow bones to move in different ways.

10. 8. 2 types of Joints:
Moveable = Hip, hand, knee, shoulder, neck
Immovable = Skull

11. 9. Bones in movable joints are held together by strong connective tissue called LIGAMENTS.

12. 10. Another type of connective tissue is CARTILAGE which is more flexible than bone. It covers the ends of BONES and keeps them from rubbing together.

13. 11. Compact bone is hard and dense, but not solid
11.Compact bone is hard and dense, but not solid. The canals in compact bone carry blood vessels and nerves from the bone’s surface to the living cells within the bone.
12. Spongy bone has small spaces which makes it lightweight.
13. Bones contain soft connective tissue called marrow. The 2 types are red and yellow.

14. 13. Label the bone:
A – Compact Bone
B – Bone Marrow
C – Spongy Bone
D – Outer Membrane
14. D
15. A
16. B
17. C

15. 18. Bones are alive and they contain cells and tissues, such as blood and nerves. Bones form new tissue as you grow.
Make sure you added this:
Bone Marrow:
Red and Yellow
Red – Makes Blood
Yellow – Store fat.

16. I. The Muscular System
There are about 600 muscles in your body!!

17. 2. Some muscles are NOT under your control, these muscles are called involuntary.
3. Involuntary muscles are responsible for breathing and digesting food.

18. 4. YOU have CONTROL over voluntary muscles.

19. 5. 3 Types of Muscles
1. Skeletal
2. Smooth
3. Cardiac

21. Skeletal Muscle –are attached to your bones.
= Striated Muscle.

22. Smooth Muscles – Used for pushing food in the digestive tract and in your blood vessels to push blood along.

23. CARDIAC – in the heart

24. Think “T” for Tendon, “t” for muscle TO bone.
6. Skeletal muscles are attached to the bones of your skeleton and provide the force that moves your bones.
7. A tendon is a strong connective tissue that attaches muscle to bone.
Think “T” for Tendon, “t” for muscle TO bone.

26. 8. Skeletal muscles are under your control so they are classified as voluntary muscles.

27. 9. Smooth muscles are involuntary muscles, they work automatically to control certain movements in your body such as digestion.
10. Stomach, blood vessels, intestines, esophagus

28. 11. Cardiac muscle is ONLY found in the HEART!!

29. 12. Muscles can ONLY contract and PULL.
Muscles do NOT extend or push.
While one muscle CONTRACTS, the other RELAXES.

30. one muscle CONTRACTS, the other RELAXES.

31. Yes No Skeletal Smooth Cardiac Muscle Type Voluntary Involuntary
Reacts Quickly
Tires Quickly
Skeletal
Yes No
Smooth
Cardiac

32. 14. Functions of Skin:
Protect Body – from disease getting inside and holds important fluids in (like water)
Maintain Temperature – sweat to get rid of body heat to help cool the body.
Eliminate Waste – Sweat (extra water, proteins, salt)
Gather Information – sensory nerves provide information about pressure, pain and temperature.
Produce Vitamin D – important for healthy bones