Musculoskeletal System - PowerPoint PPT Presentation

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Musculoskeletal System

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Musculoskeletal System Musculoskeletal system refers to the muscles and skeleton of the human body. Our muscles and skeleton work together to protect organs, enable ... – PowerPoint PPT presentation

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Title: Musculoskeletal System


1
Musculoskeletal System
2
Musculoskeletal system refers to the muscles and
skeleton of the human body.
Our muscles and skeleton work together to protect
organs, enable movement and give the body its
general shape.
3
The Skeletal System
4
The Skeletal System
  • The skeleton is a group of bones and cartilage
    which provide a framework for the muscle
    attachment.
  • The skeleton helps protect the bodys vital
    organs.
  • For example - the rib cage
    protects the lungs and heart. - the skull
    protects the brain.
  • Bone marrow produces our blood cells
  • (illustration on the following page)

5
A Look at Bone Marrow
6
Joints
  • A joint (join - t) is the area where two bones
    connect.
  • A joint enables us to bend, twist and rotate.
  • Most joints are moveable.

7
  • Four Types of Moveable Joints

Name Function Example
Ball-and-Socket Joints Enable bones to move in all directions. hips shoulders
Hinge Joints Enable bones to move in two directions. knees elbows
Pivot/Rotating Joints Enable side to side rotation. neck
Gliding Joints Enable flat bones to glide over each other hands spine
8
Four Types of Moveable Joints
9
The Muscular System
10
  • Muscular System
  • Muscles attach to the skeleton whereby
  • holding the skeleton together
  • giving the body its general shape
  • enabling movement
  • Muscle contractions help to control body
    processes such as breathing, digestion and blood
    flow.
  • Skeletal muscles are voluntary muscles.

11
  • Voluntary and Involuntary Muscles
  • 1. Voluntary Muscle contractions are controlled.
  • Example skeletal muscles (biceps and
    triceps)
  • 2. Involuntary Muscle contractions occur
    automatically.
  • Example cardiac (heart) muscles
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