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Skeletal System

Learn about the skeletal system's functions, including support, movement, protection, blood production, and storage of minerals. Explore the different parts of the skeletal system, such as the axial and appendicular skeleton, bones, joints, ligaments, and connective tissues. Discover common skeletal system problems like fractures, dislocations, sprains, scoliosis, and osteoporosis.

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Skeletal System

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  1. Skeletal System

  2. Skeletal System Videos Crash Course Skeletal System Intro Crash Course Bones Part 1 Crash Course Bones Part 2

  3. 1. Movement:Skeletal system provides points of attachment for muscles. Your legs and arms move when the muscles pull on the bones. 2. Support: The backbone is the main support center for the upper body. It holds your head up and protects your spinal cord. Muscle attached to bones!! 5 Functions of the Skeletal System

  4. 3. Protection:The bones of your skull protect your brain. Your ribs protect your lungs and heart from injury. 4. Blood Production (hematopoiesis):Red and white blood cells are formed by tissue called marrow, which is in the center of the bone. 5 Functions of the Skeletal System

  5. 5. Storage: Bones store minerals, such as calcium and phosphorus, for use by the body 5 Functions of the Skeletal System

  6. Axial Skeleton: The axial skeleton includes the skull, spine, ribs and sternum. Appendicular Skeleton: The appendicular skeleton includes the appendages of the body, which are the shoulders, arms, hips, and legs. Two Major Skeletal System Parts

  7. Skeletal System Bones • Four basic bone shapes • 1. Long- arms, legs and fingers • 2. Short- wrist and ankles • 3. Flat- skull and sternum • 4. Irregular- spine

  8. Typical Four Layers: Periosteum: Covers Bones Compact Bone: Lies beneath the periosteum Spongy Bone: Lies beneath the compact bone Bone Marrow: Fills the gaps between the spongy bone Bone Structure

  9. Some are thicker than others!!! Bones of the Cranium

  10. Cranium Bones Parietal Bone Parietal Bone Frontal Bone Temporal Bone Occipital Bone

  11. Maxilla and Mandible ? Maxilla Mandible

  12. 1) The cervical region (neck bones)  2) The thorasic region (what the ribs attach to) 3) The lumbar region (the lower part of the back) Vertebral Column or Spinal Cord

  13. Rib Cage

  14. Sternum (Breastbone) Manubrium Xyphoid Process

  15. Coccyx and Sacrum (tailbone)

  16. The clavicle, or collar bone, holds the shoulder joint away from the rest of the upper body and is only as thick as your little finger. Clavicle

  17. The scapula is located on the back side of the ribcage and helps provide part of the shoulder joint and movement for the arms. Scapula

  18. Humerus (Upper Arm Bone)

  19. Radius and Ulna • Radius on Top • Ulna on Bottom

  20. Carpals or (Wrist Bones)

  21. Metacarpals (Top of Hands)

  22. Phalanges (Little Fingers)

  23. Pelvis (Dancing Bone)

  24. Female & Male Pelvis

  25. Femur (Thigh bone) The largest bone in the body

  26. The Tibia and Fibula

  27. Tarsals

  28. Metatarsals

  29. Phalanges

  30. Calcaneous

  31. Ball and Socket Joint:Round end of bone fitting snuggly within another bone. Ex. Shoulder and Hip Full range of motion Joints of the Body

  32. Hinge Joint: Movement at joint in one direction like a door. Ex. Knee and Elbow Joints of the Body

  33. Pivot Joint:Bone resting atop another bone permitting free movement. Ex. Neck, Wrist and Ankles Joints of the Body

  34. Gliding Joint:Bones slipping over other bones with a free flowing movement. Ex. Carpals & Tarsals Saddle Joint: Bones are shaped like a saddle Ex. Thumb (opposable) Joints of the Body

  35. Joints of the Body • Condyloid Joint (Ellipsoid): Shape is like a cup & allows for movement along 2 planes • Ex. Knuckles • Immovable Joints: Joint does not move • Ex. Skull

  36. Ligaments:Connect bone to bone The Connectors of the Body

  37. The Connectors of the Body!! • Tendon:Attaches muscles to bones

  38. The Connectors of the Body • Cartilage: It acts as a cushion between bones at a joint and protects the bones.

  39. Fracture: Break Dislocation: Out of joint Problems of the Skeletal System

  40. Sprain: Swelling in the joint Arthritis: Inflamed and stiff joints Problems of the Skeletal System

  41. Scoliosis: Curvature of the spine Osteoporosis: Brittle bones Problems of the Skeletal System!!

  42. Bone Fractures

  43. How a Bone Heals

  44. And that’s the Skeletal System in a nutshell… Any Questions??

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