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Summary Skeletal system - key notes and cheat sheet

providing easy quick learnable notes on the skeletal system. Simple with graphs and visual diagrams to improve memorisation. Good revision resource and totally recommended for science and physiology exams.

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  • August 9, 2023
  • 3
  • 2023/2024
  • Summary

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Skeletal System - key notes

Bones & Joints:

- There are 206 bones in a human skeleton.

- One function of a skeleton is to enable the body to move (by using muscles)

- Another function of the skeleton is to protect the organs and nervous system.

- A third function of the skeleton is to support the body (in order for it to keep the body
shape)

- The skull contains bones that fused together after birth to protect the brain.

- The rib cage protects the heart and lungs.

- The vertebrae are bones in the backbone that protects the spinal cord and support
the body.

- There are four types of joints

● Hinge joint
● Ball and socket joint
● Pivot joint
● Fixed

- The shoulder is an example of a ball and socket joint

- The elbow is an example of a hinge joint.

- Bones are hard on the outside and soft in the middle.

- The soft tissue inside bones is called bone marrow.

- The bone marrow in the middle of the bone produces blood cells.

- A Ligament can be stretched a little to allow the joints to be flexible.

- A ligament connects bone to bone.

- The ends of a bone are covered with a smooth substance called cartilage.

- This smooth substance reduces friction between two bones and prevents them from
grinding together.

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