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The Human Musculoskeletal System


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The Musculoskeletal System under the Unit HUMAN BODY

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The Human Musculoskeletal System

  1. 1. TSYS ME
  2. 2. Organ system that gives humans the ability to move using their muscular and skeletal systems
  3. 3. Skeletal Muscular Joints, ligaments and tendons The Musculoskeletal System
  4. 4. Skeletal BONES Structure Functions
  5. 5. The bones are what gives the body shape. Bones support our bodies.  Babies have more than 300 bones and adults have 206 bones.
  6. 6. Underneath your skin there are 5 types of bones in the human body. These are . . . Long Bones Short Bones Flat Bones Irregular Bones Sesamoid Bones
  7. 7. Long Bones Includes having a body which is longer than it is wide. They are usually somewhat curved for strength. The femur - a long bone Tibia Fibula Examples include femur, tibia, fibula, humerus, ulna and radius
  8. 8. Short Bones The carpals - a short bone Roughly cube-shaped and have approximately equal length and width Providing support and stability with little movement. Examples include ankle and wrist bones
  9. 9. Flat Bones The scapula - a flat bone a thin shape/structure and provide considerable mechanical protection and extensive surfaces for muscle attachments.
  10. 10. Irregular Bones Vertebrae - irregular bones Bones in the body which do not fall into any other category, due to their non- uniform shape. Consist of cancellous bone, with a thin outer layer of compact bone. Good examples of these are the Vertebrae, Sacrum and Mandible (lower jaw).
  11. 11. Sesamoid Bones The patella (knee cap) – a sesamoid bone Short or irregular bones, imbedded in a tendon. It passes over a joint which serves to protect the tendon. Examples common to everyone include the patellae (kneecaps).
  12. 12. What do you think we would look like without bones?  Bones provide the framework for the body.  Bones protect the body organs.  Bone helps the body move in different directions and different ways
  13. 13. What is your bone made of?
  14. 14. A typical bone has an outer layer of hard or compact bone, which is very strong, dense and tough! Inside this is a layer of spongy bone, which is like honeycomb, lighter and slightly flexible. In the middle of some bones is jelly- like bone marrow, where new cells are being produced for the blood.
  15. 15. Muscular Muscles are also necessary for movement: They're the masses of tough, elastic tissue that pull our bones when we move.
  16. 16. Smooth Cardiac Skeletal T Y P E s
  17. 17. Smooth Muscle Involved in involuntary motion, for example the smooth muscle of the eyes helps them focus without the prompt of the nervous system. No striations and has cells that are described as spindle shaped. Examples include stomach and bladder
  18. 18. Cardiac Muscle Makes up the thick, inner layer of the heart. Enables the heart muscle to pump continuously and involuntarily without ever resting. Promotes the circulation necessary to sustain the entire body.
  19. 19. Skeletal Muscle  Called striated muscle  is part of what comprises the musculoskeletal system, which connects muscles and bones for voluntary body movements.  Attached to both ends of a bone by the tendons.
  20. 20. Joints, ligaments and tendons Joints Ligaments Tendons
  21. 21. The ones between the carpals of the wrist, are found where bones meet as flat surfaces Allow for the bones to glide past one another in any direction.
  22. 22. Are where two or more bones meet; They allow you to move.
  23. 23.  Such as the one between the first metacarpal and trapezium bone, permit 360 degree motion by allowing the bones to pivot along two axes.  Such as the elbow and knee, limit movement in only one direction so that the angle between bones can increase or decrease at the joint.
  24. 24.  Form the only ball and socket joints in the body.  Have the freest range of motion of any joint in the body – they are the only joints that can move in a full circle and rotate around their axis.
  25. 25. Fibrous connective tissue which attaches muscle to bone. Fibrous connective tissue which attaches bone to bone