Functions of the skeleton

sorry if the title is spelt wrong

**

HideShow resource information
  • Created by: Hayley
  • Created on: 21-05-10 17:51
Preview of Functions of the skeleton

First 245 words of the document:

5 functions of a skellington
1. Protection - the cranium and ribs protect the brain and vital organs in the
chest.
2. Shape - gives shape to the body and makes you tall or short.
3. Support - holds your vital organs in place when playing sport. The vertebral
column holds the body upright.
4. Movement - muscle are attached to bones, which are jointed. When the
muscles contract the bones move.
5. Blood production - red blood cells (to carry oxygen) and white blood cells
(to protect against infection) are produced in the bone marrow of some
bones
Cervical
smallest vertebrae
support the head and neck
top vertebra (atlas) allows head to nod
second vertebra (axis) allows head to rotate
Thoracic
ribs are attached to the thoracic vertebrae, making a protective cage
allow some movement, bending forward, backward and side to side
Lumbar
largest vertebrae
large range of movement allows much flexibility; bending forward, backward
and side to side
prone to injury
Sacrum
bones of sacral vertebrae are fused together
make a strong base and transmit force from legs to upper body
Coccyx
fused vertebrae, no special use
Discs
cartilage discs between vertebrae act
Synovial joints
Cartilage reduces friction. Acts as a shock absorber.
Synovial fluid lubricates the joint.
Synovial membrane produces synovial fluid.

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

Tendon joins muscle to bone enabling movement.
Ligament joins bone to bone, stabilising the joint.
In sport you move your limbs in different directions using joint actions. Use the
following terms to describe the movements:
Movement Description
Abduction Movement away from the midline of the body
Adduction Movement towards the midline of the body
Extension Straightening limbs at a joint
Flexion Bending the limbs at a joint.…read more

Page 3

Preview of page 3

Here's a taster:

Hyaline cartilage - covers the ends of the bones, stops them rubbing
together and absorbs shock.
Epiphysis - the `head' of the bone.
Cancellous bone - spongy bone that stores the red bone marrow; where
blood cells are made.
Epiphyseal plate ­ the area where bones grow in length.
Diaphysis - the shaft.
Compact bone ­ hard, dense bone. It gives strength to the hollow part of
the bone.
Periosteum ­ a protective layer where there is no hyaline cartilage.…read more

Comments

No comments have yet been made

Similar Physical Education resources:

See all Physical Education resources »See all resources »