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 Structure
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 -

9. 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