Starter List as many joints in the body as you can Describe how each joint moves Make groups of joints based on their similar movement

A B C #9 Starter Identify each type of muscle to the right. Is this muscle relaxed or contracted? Explain how you know. B C

SKELETAL SYSTEM pp 911-916

FUNCTION Bones support and protect organs Gives shape and structure Store minerals Produce blood cells

SKELETON Axial –the skull, face, vertebral column, and rib cage (80 bones) Protection

SKELETON Appendicular –the arms and legs, pelvis, scapula, etc (126 bones) Movement

BONE STRUCTURE Porous and made of proteins and minerals osteocytes –cells that make bone bone marrow – soft bone tissue that produces blood cells

BONE DEVELOPMENT Develop from cartilage ossification: hardening of bone cartilage Elongation at end of bones

JOINTS Place where two bones meet

Associated Connective Tissue Ligaments: connects bone to bone (tough bands that hold joint in place) Tendons: connect muscle to bone Cartilage: flexible connective tissue

Disease of the Connective Tissues!

JOINTS Fixed: no movement between bones

JOINTS Semimovable: limited movement

JOINTS Movable hinge – moves up and down

JOINTS Movable pivot – move side to side

JOINTS Movable ball-and-socket – move in a circle

JOINTS Movable gliding – bones slide over one another