1. The skeletal system

2. The skeletal system is a human body system made up of over 200 bones, actually most humans have _________ bones in their body. Every time you walk, run, or jump, you are using your skeleton.
206

3. FUNCTIONS OF THE SKELETAL SYSTEM

4. There are many function of the skeletal system in the human body.
Bones provide _________________ for muscles, joints, tendons, etc., and they help form our shape.
Bones provide __________________ for different organs such as the heart, brain, and lungs.
support
protection

5. movement blood cells storage
Bones allow ______________________________, such as running, jumping, and sitting.
Bones create __________________ ______________. The bone marrow inside many of our bones is where red blood cells, white blood cells, and platelets are made.
Bones provide _______________________ of calcium, phosphorus, sodium, and other minerals.
blood cells
storage

6. TWO PARTS of THE SKELETAL SYSTEM

7. Axial rib cage skull spinal cord axis
___________skeleton: provides protection to the organs of the upper body.
Some of these bones are the ___________, ____________,
and _____________________.
The word “axial” comes from the word ________ and refers to the fact that the bones are located close to or along the central axis of the body.
skull
rib cage
spinal cord
axis

8. Appendicular arms legs shoulders hipbone (pelvis) joined
________________________ skeleton: is made up of the bones in the ____________, ________________, and their supports, such as the
_______________________ and
______________________________.
The word “appendicular” is an adjective of the word appendage, which means it is
______________________ to something larger.
Appendicular
arms
legs
shoulders
hipbone (pelvis)
joined

10. TYPES OF BONES

11. Long
____________ bones are those that are longer than they are wide. They are subject to most of the load during daily activities, and they are crucial for skeletal movement.
Examples are the arm and leg bones.

12. Short
________________ bones are those that are as wide as they are long. Their function is to provide support and stability with little or no movement.
Examples are the bones in the hand and foot.

13. Flat
________________ bones are those which are designed for protection or for muscular attachment.
Examples are the skull, rib cage, breast bone, and shoulder bone.

14. Irregular
________________ bones are those which cannot be grouped due to their abnormal shape.
Examples are the spine and facial bones.

15. X-ray pictures