1 of 21

Module #: 5�Skeletal system

2 of 21

COMPACT: Closely packed together

LIGHTWEIGHT: Does not weigh much

STRONG: Provides good support

3 of 21

INCISIVE

MANDIBLE

QUADRATE

NASAL

LACRIMAL

OCCIPITAL

4 of 21

OCCIPITAL

ATLAS

EPISTROPHEUS

5 of 21

6 of 21

CORACOID

WISHBONE

The bone that we are most familiar with [CLICK] is the wishbone.

[CLICK] The wish bone is made up of the [CLICK] CLAVICLE.

This elastic bone is crucial for the bird’s flight mechanics – it serves as a spring that holds and releases energy while the bird flaps its wings attempting to fly.

[CLICK]

Breaking of the wishbone is a traditional event at roast chicken or turkey is eaten at a family meal.

The wishbone-breaking game has been around since the days of Plymouth Rock. In fact, it originated with the Etruscans, an ancient Italian civilization who held birds to be future-predicting oracles. Whenever the Etruscans slaughtered a chicken, they would harvest its wishbone and set it out in the sun to dry (in hopes of preserving the chicken’s divine powers). Passerby would then pick up the bone in order to hold it in their hands and softly stroke it while making wishes upon it. This is where the wishbone gets its modern-day name.

When the Romans came in contact with the Etruscans, they took hold of this custom. As legend has it, today’s ritual of breaking the wishbone first emerged because of a supply and demand problem: So many Romans wanted to make wishes upon the chicken’s furcula (another word for wishbone) that there weren’t enough wishbones to go around. The Romans passed the wishbone-breaking tradition along to the English, who brought the ritual with them over to Plymouth Rock. Here, the abundance of wild turkeys provoked a switch in the fowl, from chickens to turkeys.

7 of 21

BREAST BONE

STERNUM or KEEL

8 of 21

Body vertebrae are fused:

Lumbar
Sacral

BACK

Lumbar

Sacral

9 of 21

NOT fused:

Pygostyle

TAIL

10 of 21

Made up of a group of bones

Pair of ilium
Ischium
Pubis/Pubic bones

PELVIC GIRDLE

Ilium

Ishium

Pubis

11 of 21

12 of 21

Femur

Fibula and Tibia

Metatarsus

13 of 21

THIGH

Femur

DRUMSTICK

Tibia

Fibula

14 of 21

Hip

Knee

Ankle

Patella

15 of 21

16 of 21

Scapula

Humerus

Radius

Ulna

Metacarpus

Phalanges

17 of 21

WING TIPS

FLATS

DRUMETTES