Uniformed Public Services Unit 7 Assignment 2

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Matthew Woolley        Unit 7         Uniformed Public services

Unit 7: Physical Preparation and fitness for the Uniformed Services

The Skeletal system

The Skeletal system basically refers to the skeleton of the human body. The skeletal system gives the body support, maintains the body’s shape, allows movement and in some cases provides protection. The human adult body contains 252 bones in total.


Bones and their purpose

Bones of the Head and chest

  • Skull (cranium)- This provides shape for the head and protection for the brain.
  • Vertebra- this allows movement of the back and provides support. Its most important function is to carry nerve signals from the brain to other parts of the body and back.
  • Sternum- this bone is quite strong and is connected to the ribs. It provides the main protection to the centre of the respiratory system.
  • Rib(s)- there are a number of these bones that surround the lungs and heart. They start at the spine, round the body to the sternum. This whole structure is known as the rib cage.

Bones of the arm and hand

The arm bones consist of…

  • Humerus
  • Ulna
  • Radius
  • Carpals
  • Metacarpals

The only purpose of these bones is to provide movement along with the muscles that surround them.

Bones of the leg and foot

Again, these bones are for support and movement. They consist of…

  • Femur
  • Patella
  • Fibula
  • Tibia
  • Tarsal
  • Metatarsals
  • Phalanges


The muscular system

The human body contains more than 650 individual muscles anchored to the skeleton, which provide pulling power so that the body can move around.  A muscle can contract and relax. When they contract they become shorter and the part of the body it is attached to with it. Different joints between bones restrict movement in different parts.

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Different muscles and the movement they cause

  • Sterno-cleido mastoid muscle- these muscles are on the front of the neck and allow the head to nod forwards.
  • Deltoid- these are the shoulder muscles and raise the arms up and down.
  • Pectorals- these are the body’s breast muscles. They cause a forward pushing action with the arms.
  • Trapezius- these muscles are on the back of the neck and allow the head to face upward.
  • Triceps-these muscles are on the upper back part of the arm. These muscles are relaxed when the arm is bent.
  • Biceps- these muscles ...

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