Skull bones

Cranial bones

This is the first part of the skull, containing 11 differernt bones (cranial cavity)

Facial bones

This is the second part of th skull with 14 bones, forming the face

Types of cranial bones

• Frontal

• Parental

• Occipital

• Temporal

• Sphenoid

• Vomer

• Inferior Nasal concha

Types of facial bones

• Nasal

• Maxillae

• Zygomatic

• Mandible

• Lacrimal

• Palatine

Coronal Sutures

Parietal to frontal bones

Squamous sutures

Parietal to temporal bones

Sagittal sutures

Right to left parietal

Lambdoid sutures

Parietal to occipital bones

Sutural Bones

Small, irregular shaped bones on different areas of the body within sutures.

• Not everyone has these!

Paired cranial bones

Temporal and parietal bone

Unpaired cranial bones

Frontal, occupational, sphenoid, and ethmoid

Paired Bones

The bones are symmetrical with each other, there are two

Unpaired bones

These bones have only one

Frontal bone

Forehead to the top of the eye socket

• contains a paranasal sinus

Temporal

Sides of the skull to the external auditory meatus

• connects by joints to the mandible

  Contains the mastoid process near the bottom skull

Parietal

Sides to the roof of the cranium

Occipital

Lower back of the skull to the base

Contains the

• Foramen magnum (hole in the skull)

• Occipital condyles (below the eye socket)

Sphenoid

• Posterior to the eye socket

• Has a paranasal sinus

• Floor of the cranial cavity

Ethmoid

• Medial wall of eye socket

• Has a Paranasal sinus

• Contains the nasal cavity wall

Unpaired facial bones

Mandible and vomer

Paired facial bones

• Maxillae

• Zygomatic bones

• Nasal bones

• Lacrimal bones

• Palatine bones

Zygomatic bones

• Lateral to the walls of the eye socket (orbits)

• Cheek bones

Lacrimal bones

In the medial orbital walls

Nasal bone

Forms the bridge of the nose

Palatine bones

The posterior part of the hard palate in your mouth

Maxilla

• Looks like a keystone

• Roof of your mouth

• Holds the teeth

• Paranasal sinus

Inferior nasal conchae

Thin curved bones that are on the lateral side of the nasal cavity

Mandible

Strongest facial bone (jaw), it is the only moveable bone in ur facial bones other than the auditory ossicles.

Vomer

• Inferior part of the nasal septum

Hyoid bone

Located underneath your jaw, it is the only floating bone in the body as it is connected to the body via ligaments only

Nasal Septum

Contains:

• Superior extension of the vomer

• Perpendicular plate of the ethmoid bone

• Haylie cartilage

Nasal conchae

Contains the superior and middle concha project from the ethmoid

• filters and swirls air before the lungs

Paranasal Sinuses

Located within

• frontal

• Ethmoid

• Sphenoid

• Maxillary

Lightens the skull and lines the sinus with mucous membranes

Wormian Bone

This type of bone is a larger form of a suture bone, usually the size of the 4 different bones that make up the top and bottom of the skull