Structure and Function The Body

Skeleton Skeleton is made of bones Bones are held together by ligaments

Skeleton Supports Protects Attachment for muscles Allows movement Makes blood cells Stores minerals

Ligaments HOLD BONES TOGETHE R

CARTILAGE COVERS ENDS OF BONES STOPS THEM RUBBING TOGETHER LUBRICATES

TENDONS ATTACH MUSCLE TO BONE

TENDONS ATTACH MUSCLES ACROSS JOINTS

MUSCLE CAUSES MOVEMENT CAN ONLY PULL WORK IN PAIRS OR SETS CAN BE VOLUNTARY OR INVOLUNTARY

MUSCLES TWO TYPES SLOW TWITCH FAST TWITCH

MUSCLES SLOW TWITCH OR RED MUSCLE FULL OF CAPILLIARIES AND BLOOD RICH IN OXYGEN AND CAN KEEP THE BODY WORKING FOR A LONG TIME LITTLE FORCE DOES NOT TIRE EASILY

MUSCLES FAST TWITCH OR WHITE MUSCLE LESS RICH IN OXYGEN VERY POWERFUL TIRES EASILY

MUSCLES EACH PERSON IS MADE UP OF DIFFERENT MUSCLE FAST AND SLOW SPRINTERS LOT OF FAST/WHITE MARATHON LOT OF SLOW/RED

MUSCLES POWER CELL OFMUSCLE IS CALLED MITOCHONDRIA CONVERT FOOD INTO ENERGY

JOINTS WHERE TWO BONES JOIN TOGETHER JOINTS ALLOW MOVEMENT

SYNOVIAL JOINTS WHOLE JOINT HELD IN SAC SURFACES OF BONES COVERED IN CARTILAGE SAC FILLED WITH SYNOVIAL FLUID

JOINTS BALL AND SOCKET CONDYLOID SADDLE HINGE PIVOT GLIDING

BALL AND SOCKET SHOULDER AND HIP MOVEMENT IN ALL DIRECTIONS

HINGE JOINTS ELBOW AND KNEE MOVEMENT IN TWO DIRECTIONS

JOINTS CONDYLOID WRIST BONES AN ODD SHAPE SADDLE THUMB PIVOT ELBOW RADIUS AND ULNA AREAS