The document provides information about the bones that make up the human skull. It states that the skull contains 22 bones total, with 8 cranial bones forming the cranial cavity to protect the brain, and 14 facial bones forming the framework of the face. It then proceeds to describe each individual bone, its location and function. It notes other bones in the skull like the auditory ossicles and hyoid bone. In closing, it mentions that sinuses are air-filled cavities located in certain skull bones that help reduce the weight of the skull.

1. Construct Interactive Notes
• 6 pages binder paper
On cover, write
• Chapter 6: Skeletal System
• Name, period, seat #
• Picture

2. Bones of the Skull (pg 2)

3. Bones of the Skull
• Skull contains 22 bones (8 cranial and 14
facial)

4. Bones of the Skull
• Skull contains 22 bones (8 cranial and 14
facial)
• Cranial bones form the cranial cavity that
surrounds and protects the brain

5. Bones of the Skull
• Skull contains 22 bones (8 cranial and 14
facial)
• Cranial bones form the cranial cavity that
surrounds and protects the brain
• Facial bones form the framework of the face,
support the entrances to the digestive and
respiratory systems, and provide attachment
points for the muscles involved in facial
expression

6. Cranial Bones
• Frontal (1): Forms the forehead and the roofs
of the eye sockets

7. Cranial Bones
• Frontal (1): Forms the forehead and the roofs
of the eye sockets
• Parietal (2): Form the sides and roof of the
cranial cavity.

8. Cranial Bones
• Frontal (1): Forms the forehead and the roofs
of the eye sockets
• Parietal (2): Form the sides and roof of the
cranial cavity.
• Occipital (1): Forms the back and the base of
the cranium. Contains foramen magnum

9. Cranial Bones
• Frontal (1): Forms the forehead and the roofs
of the eye sockets
• Parietal (2): Form the sides and roof of the
cranial cavity.
• Occipital (1): Forms the back and the base of
the cranium. Contains foramen magnum
• Temporal (2): Form the lower sides of the
cranium. Contains the external auditory
meatus (ear canal)

10. Cranial Bones
• Frontal (1): Forms the forehead and the roofs
of the eye sockets
• Parietal (2): Form the sides and roof of the
cranial cavity.
• Occipital (1): Forms the back and the base of
the cranium. Contains foramen magnum
• Temporal (2): Form the lower sides of the
cranium. Contains the external auditory
meatus (ear canal)
• Sphenoid (1): Spans the width of the cranial
floor. Shaped like a bat

11. Cranial Bones
• Frontal (1): Forms the forehead and the roofs of the
eye sockets
• Parietal (2): Form the sides and roof of the cranial
cavity.
• Occipital (1): Forms the back and the base of the
cranium. Contains foramen magnum
• Temporal (2): Form the lower sides of the cranium.
Contains the external auditory meatus (ear canal)
• Sphenoid (1): Spans the width of the cranial floor.
Shaped like a bat
• Ethmoid (1): Forms most of the bony area between the
nasal cavity and the orbits. 3 parts: Cristagalli
(triangular upper portion), Cribiform plate (contains
olfactory foramina), and Perpendicular plate (forms
part of nasal septum)

12. Cranial sutures
• Sagittal suture: between the parietal bones

13. Cranial sutures
• Sagittal suture: between the parietal bones
• Coronal suture: between the frontal bone and
the parietal bones

14. Cranial sutures
• Sagittal suture: between the parietal bones
• Coronal suture: between the frontal bone and
the parietal bones
• Lambdoid suture: between the occipital bone
and the parietal bones

15. Facial Bones
• Maxillary (2): Form the upper jaw, floor of the
orbits, and roof of the mouth. Contains the
upper teeth

16. Facial Bones
• Maxillary (2): Form the upper jaw, floor of the
orbits, and roof of the mouth. Contains the
upper teeth
• Palatine (2): L-shaped bones behind the
maxillae

17. Facial Bones
• Maxillary (2): Form the upper jaw, floor of the
orbits, and roof of the mouth. Contains the
upper teeth
• Palatine (2): L-shaped bones behind the
maxillae
• Nasal (2): Form the bridge of the nose

18. Facial Bones
• Maxillary (2): Form the upper jaw, floor of the
orbits, and roof of the mouth. Contains the
upper teeth
• Palatine (2): L-shaped bones behind the
maxillae
• Nasal (2): Form the bridge of the nose
• Lacrimal (2): Located in the medial walls of the
orbits

19. Facial Bones
• Zygomatic (2): Cheek bones. Joins with the
temporal bone to form the zygomatic arch

20. Facial Bones
• Zygomatic (2): Cheek bones. Joins with the
temporal bone to form the zygomatic arch
• Inferior nasal conchae (2): Thin, curved bones
that project into the nasal cavity

21. Facial Bones
• Zygomatic (2): Cheek bones. Joins with the
temporal bone to form the zygomatic arch
• Inferior nasal conchae (2): Thin, curved bones
that project into the nasal cavity
• Vomer (1): Forms part of nasal septum

22. Facial Bones
• Zygomatic (2): Cheek bones. Joins with the
temporal bone to form the zygomatic arch
• Inferior nasal conchae (2): Thin, curved bones
that project into the nasal cavity
• Vomer (1): Forms part of nasal septum
• Mandible (1): Lower jaw. Articulates with the
temporal bone at the temporomandibular
(TMJ) joint. Contains the lower teeth and
mental foramina

23. Other bones of the skull
• Auditory ossicles: malleus, incus, and stapes.
Tiny bones in the middle ear

24. Other bones of the skull
• Auditory ossicles: malleus, incus, and stapes.
Tiny bones in the middle ear
• Hyoid bone: U-shaped bone in the neck.
Functions as a base for the tongue. Only bone
in the body that does not articulate directly
with another bone

25. Sinuses
• Air-filled cavities lined with mucous
membranes. Reduce weight of skull

26. Sinuses
• Air-filled cavities lined with mucous
membranes. Reduce weight of skull
• Located in the frontal, sphenoid, ethmoid, and
maxillary bones