Dr. Ahmed ElNashar 2015

SKELETON OF HEAD & NECK2015

Dr. Ahmed El-Nashar

Practical Anatomy for dental student

Cranial CavityTHE SKULL ….

•Parts

•Bone

•Features

•Structure attached

Parts + Bone

1. Ethmoid bone

2. Frontal bone

3. Sphenoid bone

4. Temporal bone

5. Pareital bone

6. Occipital bone

Parts + Bone

Ant. Cranial fossa

Ant. Cranial fossa1. Frontal crest

2. Frontal air sinus.

3. Foramen ceacum

4. Crista galli

5. Cribriform plate

6. Orbital plate

7. ant. Ethmoidal f.

8. post. Ethmoidal f.

Ant. Cranial fossa1. Frontal crest

2. Frontal air sinus.

3. Foramen ceacum

4. Crista galli

5. Cribriform plate

6. Orbital plate

7. ant. Ethmoidal f.

8. post. Ethmoidal f.

Middle Cranial fossa

Middle. Cranial fossa

1.Lesser wing of sphenoid.

2. Jugum sphenoidal.

3.ant. Celnoid process.

4. post. Celnoid process

5. Optic groove

6. Sella turcica.

7. Hypophyseal fossa.

Middle. Cranial fossa

1.Lesser wing of sphenoid.

2. Jugum sphenoidal.

Middle. Cranial fossa1.Lesser wing of sphenoid.

2. Jugum sphenoidal.

3.ant. Celnoid process.

4. post. Celnoid process

5. Optic groove

6. Sella turcica.

7. Hypophyseal fossa

8. Trigeminal impression

9. Arcuate emeninece.

10. Tegmen tempani.

Middle. Cranial fossa

1. Optic canal.

2. Foramen rotandum

3. Foramen ovale.

4. f. spinosum

5. f. lacerum.

Middle. Cranial fossa1.Lesser wing of sphenoid.

2. Jugum sphenoidal.

3.ant. Celnoid process.

4. post. Celnoid process

5. Optic groove

6. Sella turcica.

7. Trigeminal imporession

8. Arcuate emeninece.

9. Tegmen tempani.

Middle. Cranial fossa

Middle. Cranial fossa1. Clavius of skull = basilar part of

occipital bone

2. Upper border of petrous bone.

Superior petrosal sinus

Tentorum cerebelli

3.Sigmoid sulcus.

Sigmoid sinus

4. Internal occipital crest.

Occipital sinus

Falx cerebelli

5. Internal occipital protuberance.

Confluence of sinuses

6. Transverse sulcus.

Middle. Cranial fossa

1. Foramen magnum

2. Jugular foramen

3.ant. Condylar =

hypoglossal canal

1. Optic canal

Optic N & ophthalmic A

2. F rotundum: Maxillary N

3. F ovale: Mandibular N

4. Foramen spinosum: MMA

5. TRIGEMINAL GANGLION

6. F lacerum I.C.A.

7. Jugular foramen

Inferior petrosal sinus

Internal jugular vein

9, 10, 11 NS

8. Internal auditory meatus

7, 8 Ns

9. Foramen magnum

Medulla& vertebral A & spinal accessory N

1

2

34

6

78

9

5

Skull cap = calavriaTHE SKULL ….

1. Coronal suture

2. Sagittal suture

3. Lambdoid suture

4. Frontal bone

5. Parietal bone

6. Arachenoid granulation

7. Grooves for MMA

1

2

3

4

56

67

7

Groove fo r sup. Sagittal sinus

Groove fo r sup. Sagittal sinus

1. Coronal suture

2. Sagittal suture

3. Lambdoid suture

4. Frontal bone

5. Parietal bone

6. Arachenoid granulation

7. Grooves for MMA

1 1

2

3 3

4

5

6

6

77