TO BONES!

Using Your Head for the Holidays• The skull is composed of cranial bones (form a vault

for the brain) and facial bones (giving origin to the muscles of facial expression and providing buttresses protecting the brain). Except for the temporomandibular joint (a synovial joint), all bones are connected by generally immovable fibrous sutures.

• The orbit is composed of seven bones, has three significant fissures/canals, and is home to the eye and related muscles, nerves, and vessels. The most delicate of the skull bones is at the medial orbital wall. The external nose is largely cartilaginous and is therefore not part of the bony skull.

Anterior View(1)

Mandible

Frontal

Temporal

Sphenoid

Parietal

Ethmoid

Lacrimal

Nasal

Vomer

Zygomatic

Palatine

Maxilla

Inferior Nasal Concha

Lateral View(1)

ParietalFrontal

Mandible

Maxilla

Nasal

ZygomaticTemporal

Lacrimal

Sphenoid

Ethmoid

Occipital

Superior View(1)

Nasal

Frontal

Parietal

Occipital

Temporal

Posterior View(1)

Occipital

Parietal

Temporal

Mandible

Maxilla

Palatine

Sphenoid

What would your What would your tongue do without tongue do without

your Hyoid on your Hyoid on Thanksgiving Thanksgiving

Day?!Day?!

The hyoid a U-shaped bone at the base of the tongue that supports the tongue muscles.

The Spinal ColumnThe Spinal Column

Sit up straight when eating at the table! Use

your BACK BONES!

The Sternum and RibsThe Sternum and RibsThere are 24 ribs total in the human body. There are 6 true ribs on both sides of rib cage (12 total). They are called true ribs because directly connect to the sternum. There are also 6 false ribs on each side of the rib cage (12 total) which consist of the 2 pairs of floating ribs. They are called false ribs because the do not directly connect to the sternum as shown in the diagram. The floating ribs got their name because they do not connect to the sternum but they do connect on the spine. It looks like they are floating because they are not connected to the front of body.

The acetabulum is a concave surface of the pelvis. The head of the femur meets with the pelvis at the acetabulum, forming the hip joint. With maturity, the ilium, ischium, and pubis meet and grow together at a Y-shaped junction, the site of the acetabulum, a deep cavity that receives the rounded head of the thighbone, or femur. Male or Female?To find the difference between a male or female skeleton lies within the bones. A skeleton's overall size and sturdiness give some clues. Within the same population, males tend to have larger, more robust bones and joint surfaces, and more bone development at muscle attachment sites. However the best way to find out is by the pelvis, because of distinct features adapted for childbearing.

The Lower ExtremitiesThe Lower Extremities

The Coxal (Pelvic Girdle)The Coxal (Pelvic Girdle)

The FemurThe Femur

The Tibia and FibulaThe Tibia and Fibula

The Foot Bones (Tarsals, The Foot Bones (Tarsals, Metatarsals, and Phalanges)Metatarsals, and Phalanges)

Have a very Happy Thanksgiving!And don’t forget to be thankful for

your bones!