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Body Systems

Body Systems. Unit 5. Cranium (Skull). Mandible. Clavicle. Sternum. Humorous. Rib. Vertebrae. Pelvis. Radius. Ulna. Carpals. Metacarpals. Phalanges. Femur. Patella. Tibia. Fibula. Tarsals. Metatarsals. Phalanges. The Skeletal System. Functions

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Body Systems

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  1. Body Systems Unit 5

  2. Cranium (Skull) Mandible Clavicle Sternum Humorous Rib Vertebrae Pelvis Radius Ulna Carpals Metacarpals Phalanges Femur Patella Tibia Fibula Tarsals Metatarsals Phalanges

  3. The Skeletal System • Functions • Plays a crucial role in movement • Supports and protects organs • Structure • Axial Skeleton – Includes the 80 bones of the skull, spine, ribs, and sternum • Appendicular Skeleton – includes the 126 bones of the shoulders, arms, hands, hips, legs, and feet • Cartilage – strong flexible connective tissue

  4. The Skeletal System • Joints – the point where two bones meet • Ball and Socket Joint – allows the widest range of movement: forward, backward, sideways and in a circle • Example: Shoulder and Hips • Pivot Joint – allows for rotation • Example: the joint between the first two vertebrae in the neck which allow the head to rotate • Ellipsoidal Joint – oval shaped part fits into a curved space and allows for all types of movement except pivotal • Example: Wrist • Hinge Joint – allows bending and straightening • Example: Fingers, Knees, Elbows

  5. The Skeletal System • Ligaments – tough bands of fibrous elastic tissue that binds bone to bone • Tendons – fibrous cords that attach muscle to bones

  6. The Skeletal System • Problems • Fractures – Any type of break in a bone • Osteoporosis – a condition in which bone density decreases • Scoliosis – a lateral, or side to side, curvature of the spine

  7. The Circulatory System • Main Parts • Heart, Blood, and a network of branching vessels • Heart • 4 Chamber • Left and Right Ventricles • Left and Right Atriums -

  8. The Circulatory System • Main Parts • Heart, Blood, and a network of branching vessels • Heart – pumps oxygen rich blood for the body • 4 Chamber • Left and Right Ventricles • Left and Right Atriums - • Blood – delivers oxygen to the body • Vessels • Arteries – Vessels that carry blood away from the heart • Veins – Vessels that Carry deoxygenated blood toward the heart from the body’s organs and tissue • Capillaries – vessels that carry blood between arterioles and venules

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