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Skeletal System

Skeletal System. Bones Lecture. Task . Read Page 8 (10 min) Identify and note the following things: Number of bones in the skeletal system What the skeleton/bones provides for the human body How levers are created and what they allow. Functions of Skeletal System.

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Skeletal System

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  1. Skeletal System Bones Lecture

  2. Task • Read Page 8 (10 min) • Identify and note the following things: • Number of bones in the skeletal system • What the skeleton/bones provides for the human body • How levers are created and what they allow

  3. Functions of Skeletal System • 206 bones in adult skeleton • Provides framework for body • Gives body shape • Permits one to stand upright • Protects vital organs • Flexible joints act as levers for coordinated movement • Bones • firm anchor for skeletal muscles • produce RBCs in marrow cavities

  4. What’s the difference? • LIGAMENTS: bone to bone • TENDONS: Muscle to bone

  5. Classifications of Bones p. 8 • Long: humerus and femur (arms, legs, toes, fingers) • Large • Spongy tissue • Slightly curved • Short: wrist group, kneecap, • Flat: cranium (skull), ribs and sternum • Irregular: vertebrae, facial bones

  6. Axial Skeleton p. 11 • Skull (cranium) • Vertebral Column (spine) • Cervical, thoracic, lumbar, sacrum and coccyx • Sternum • Ribs

  7. Appendicular Skeleton • Upper Extremities • Clavicle: (collar bone), SC joint • Scapula (shoulder blade), AC joint • Humerus (upper arm) • Radius vs. Ulna (forearm) • Carpals (wrist) • Metacarpals (hand) • Phalanges (fingers)

  8. Appendicular Skeleton • Lower Extremities • Hip: Ilium, ishium and pubis • Femur • Patella (knee cap) • Tibia vs. Fibula • Tarsals (included is the Calcaneus or heel) • Metatarsals • Phalanges (toes)

  9. Anatomical Directions

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