PARIETTAL Bone

Question 1

Parietal bone

Answer 1

Interpariettal

Pariettal

Question 2

Interpariettal bone

Answer 2

Lies in the median plane
Rostral to the occipital bone
- in ox the frontal bone enlarges postnataly
- the interpariettal bone become displaced into Nucheal region

Question 3

Interpariettal bone

INNER SURFACE

Answer 3

1. Processus Tenrorius
   In EQ, ca
   Forms the:
   Tentorium Cerebelli Osseum
2. Canalis Sinus Transversi
3. Crista Saggitalis interna
4. Sinus Frontalis Caudalis
   - in bo
   - septum sinuum frontalium

Question 4

Interpariettal bone

OUTER SURFACE

Answer 4

1. Crista Saggitalis Externa
   - in eq, car
   - median crest on the external surface
2. Linea temporalis
   - car, EQ

Question 5

Pariettalbone

Answer 5

• paired bone
• lie btw the occipital and frontal
• form the roof and the sides of the cranium
• in ox forms the part of the Nucheal surface
• Margo interpariettalis encloses the pariettal bone

Question 6

Pariettal bone presents

Answer 6

1. Angulus Frontalis
2. Angulus occipitalis
3. Angulus sphenoidalis
4. Angulus mastoideus
5. Facies externa
   - Planum Pariettale
   - Planum Temporale
   - Linea temporalis
   - crista Saggitalis Externa
   - sinus Frontalis caudalis
6. Facies interna
   - sulci arteriosi
   - Impresaiones digitatae
   - Juga cerebralia
   - Crista Saggitalis interna
   - Processus tentoricus

Question 7

FACIES EXTERNA devides into:

Answer 7

FACIES EXTERNA devides into:

1. Planum Pariettale
   - on the roof of the cranium
   - in ox called as Planum nucheale
2. Planum Temporale
   - on the sides
3. Linea temporalis
   - separates the:
   Planum Pariettale and Temporale
4. Crista Saggitalis Externa
   - in eq, ca
   - Extends from the interpariettal bone
   - devides into Linea Temporalis on the frontal bone in CA
   - Devides into the Linea temporalis on the pariettal bone in EQ
5. Sinus Frontalis caudalis
   - in bo
   - Septum sinuum frontalium

Question 8

Facies INTERNA

Answer 8

1. Sulci arteriosi
   - vascular groove
2. Impresaiones digitatae
   - house the gurus of the brain
3. Juga cerebralia
4. Crista Saggitalis interna
   - in eq
   - inconstant
5. Processus tentoricus
   - in eq, ca
   - forms the tentorium cerebelli osseum

Question 9

Tentorium Cerebelli Osseum

Answer 9

Formed by processus tentoricus of the:

1. Os Parietale
2. Os interpariettale
3. Os occipitale
   - in eq, ca
   - attachment of tentorium cerebelli