5 th Grade Science Lab

Dem Bones, Dem Bones, Dem Dancing Bones

Mandible Your Bones Phalanges Mandible Tarsals

 Your Hands  27 Bones  8 in the Wrist  Your Skull  29 Bones  8 in the Cranium  14 in the Face  Smallest Bone  stapes (ear)  Largest Bone  femur (leg)  Bones in Your Body  300 as a Baby  206 as an Adult  Bone Grows Until…  Girls (16-18 years old)  Boys (18-21 years old)

 Study the skeleton handout and the skeleton on the board.  Practice putting the skeleton together.  RACE – which group can get their skeleton together the quickest with no mistakes??

 Vertebrae, Discs, & Spinal Cord  The “back bone” is actually is 31 segments.  The spinal cord is the communication pathway between your brain and your nervous system.  45 cm in men  43 cm in women Disc Vertebrae

Intervertebral Disc Lumbar Vertebrae

 1 Pipe Cleaner  4 Marshmallows  5 Gummy Life Savers  1 Zip Lock Bag  Thread the marshmallows and life savers onto the pipe cleaner to symbolize your spinal column.

5 th Grade Science Lab

 640+ Muscles  Skeletal Muscles  Attached to the bones  Cause the bones to move  Cardiac Muscles  Only in the heart  Move blood in and out  Smooth Muscles  Internal organs  Muscles move the body by contracting and relaxing.  Contracting - shorter. The muscle fibers slide together and stack up to make a fatter shape.  Relaxing – longer. The fibers slide apart and the muscle gets thinner.  Muscles which move bones act together in pairs. This means that as one muscle contracts, its partner relaxes.

 Label the 3 major arm bones and the muscle.  Humerus  Radius  Ulna  Biceps  Color the pieces of your arm.  Cut along the outside lines.  Put the three pieces of your arm together.