Skeletal System-Functions Provides shape and support Allows movement (provides a surface to which muscles attach) Protect delicate tissues and organs Storage of minerals (calcium and phosphorus) Produces blood cells
Bone Structure compact bone: hard and dense for strength –C–Composed primarily of minerals spongy bone: spaces for lower weight Marrow: forms blood cells veins and arteries: to bring nutrients to the cells nerves: to collect information from the tissue and to send information to the brain
Parts of Bone vein artery spongy bone marrow compact bone
Parts of Bone: Cross Section veins, arteries, nerves compact bone spongy bone bone marrow bone making cells
compact bone tissue nuclei of bone cells tubes where blood vessels and nerves go through
compact bone spongy bone
Bone Tissues
spongy
Bone Tissues compact
Bone Tissues marrow
JOINTS Joints: any place where two bones come close together 1.Immovable (skull) 2.Movable (hinge, ball & socket, pivot, gliding) What holds the bones together at the joints? ligaments
Type of Joint? shoulder/upper arm ball and socket
Type of Joint? ball and socket
gliding
gliding
immovable
pivot
pivot
hinge
hinge