The document discusses the human skeletal system. It notes that the skeletal system protects organs, manufactures blood cells, supports the body, and facilitates movement. It then lists the number of bones in the skull, spine, ribs, arms, and legs. It categorizes bones as long, short, flat, or irregular shaped and lists examples of each type. Finally, it describes how bones and connective tissues are strengthened through exercise.

3.  Protecting our internal organs
 Manufacturing blood cells
 Supporting and giving shape to the body
 Facilitating movement with the help of
muscles
 Storing minerals such as calcium

4.  Skull and upper jaw = 21
 Each ear has 3 tiny bones = 6
 Lower jaw (mandible) = 1
 Front neck bone (hyoid) = 1
 Backbone or spine = 26
 Rib (12 pairs) = 24
 Breastbone = 1

5.  Each upper limb has 32 bones: 2 in shoulder, 2
in arm, 8 in wrist, 19 in hand and fingers = 64
 Each lower limb has 31 bones: 1 in hip, 4 in
leg, 7 in ankle, 19 in foot and toes = 62

6. 1. Long bones
2. Short bones
3. Flat bones
4. Irregular- shaped bones

7.  Clavicle
 Radius
 Metacarpals
 Femur
 Fibula
 Humerus
 Ulna
 Phalanges
 Tibia
 Metatarsals

8.  Tarsals
 Carpals
 Petellas

9.  Cranium (Skull)
 Sternum
 Ribs
 Pelvis
 Scapula

10.  All bones in the spinal column.

12. 1. Bones become stronger in order to deal with
the stress that exercise places on them.
2. The cartilage at the end of bones becomes
thicker and better at shock absorption.
3. Tendons become thicker and more capable
of withstanding greater force.
4. Ligaments will stretch slightly to enable
greater flexibility at the joint.

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