5th Grade Science Lab

Dem Bones, Dem Bones, Dem Dancing Bones

Mandible

You

r B

on

es

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 Cleaner4 Marshmallows5 Gummy Life Savers1 Zip Lock Bag

Thread the marshmallows and life savers onto the pipe cleaner to symbolize your spinal column.

5th 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.