SKELETAL SYSTEM Flashcards
THE HUMAN SKELETON IS COMPOSED OF :
BONES
LIGAMENTS
TENDONS
CARTILAGE
INFANTS HAVE MORE THEN ____ BONES AT BIRTH
300
____ BONES IN THE ADULT HUMAN BODY
200
ENUMERATE THE FUNCTIONS OF THE SKELETAL SYSTEM
- STRUCTURE AND SUPPORT
- PROTECTION
- MOVEMENT
- STORAGE
- BLOOD CELL PRODUCTION
THE BONES CAN BE CLASSIFIED INTO TWO MAJOR GROUPS :
AXIAL AND APPENDICULAR
LONGER THEN THEY ARE WIDE
LONG BONE
ROUGHLY CUBE SHAPED
SHORT BONES
THIN, FLATTENED AND USUALLY A BIT CURVED
FLAT BONES
HAVE WEIRD SHAPES
IRREGULAR BONES
HARD OUTER COVERING
PERIOSTEUM
ENDS OF THE BONE
EPIPHYSIS
THE SHAFT OF THE BONE
DIAPHYSIS
CUSHIONS THE ENDS OF THE BONES ALLOWS FOR SMOOTH MOVEMENT
ARTICULAR CARTILAGE
AREAS MADE OF CARTILAGE ALLOWING FOR THE GROWTH OF THE BONE
EPIPHYSEAL PLATE
IN _________, OSTEOCYTES ( BONE CELLS ) ARE ARRANGED IN RINGS AROUND CENTRAL CANALS
COMPACT BONES
PROVIDES STRENGTH AND RESILIENCE
COLLAGEN ( PROTEIN )
PROVIDES HARDNESS AND RESISTANCE TO CRUSHING
CALCIUM
COMPOSED OF IRREGULAR AND INTERCONNECTED CHANNELS CREATING LOTS OF SPACE
SPONGY BONE
WHAT ARE THE THREE TYPES OF BONE CELLS
- OSTEOCYTES
- OSTEOBLASTS
- OSTEOCLASTS
MATURE BONE CELLS, SUSPENDED IN MATRIX
OSTEOCYTES
BUILDS NEW BONE BY ADDING COLLAGEN AND CALCIUM TO MATRIX
OSTEOBLASTS
BREAKS DOWN MATRIX TO RELEASE STORED CALCIUM
OSTEOCLASTS
