Skeletal System
Main Job: protect internal organs movement
-BONES
-hard outer covering
-spongy inside
-spongy stuff fill with bone marrow(it produces all body cells)
JOINTS
types of joints
1. immovable(skull)
2. slightly movable(spine)movable(knees,elbows,etc..)
LIGAMENTS
-strong bands of connective tissue that hold joints together
SKELETAL DISORDERS
-arthritis (swollen joints)
-osteoporosis(pores in bones)
-BONES
-hard outer covering
-spongy inside
-spongy stuff fill with bone marrow(it produces all body cells)
JOINTS
types of joints
1. immovable(skull)
2. slightly movable(spine)movable(knees,elbows,etc..)
LIGAMENTS
-strong bands of connective tissue that hold joints together
SKELETAL DISORDERS
-arthritis (swollen joints)
-osteoporosis(pores in bones)