Middle Meningeal Artery

Question 1

Beginning

Answer 1

1. Branch from 1st part maxillary artery

Question 2

Course

Answer 2

1. Ascends deep to lateral pterygoid between Auriculotemporal nerve 2 roots
2. Enters middle cranial fossa via foramen spinosum
3. Passes forwards and laterally shortly 2cm in a groove on its floor

Question 3

End

Answer 3

By dividing into anterior and posterior terminal branches

Question 4

Surface anatomy

Answer 4

1. Line 2cm upwards and forwards
2. From middle of zygomatic arch
   Then divide into 2 lines
   Anterior and posterior

Question 5

Surface anatomy anterior

Answer 5

Anterior:
1. Line upwards and forwards towards pterion
Then
2. Backwards and towards midway between nasion and inion
Upper part of artery is 1 finger breath behind coronal suture and 1 finger breath in front of brain central sulcus

Question 6

Surface anatomy posterior

Answer 6

Line backwards and upwards towards lamba

Question 7

Branches (5)

Answer 7

1. Meningeal
2. Skull bones and periosteum
3. Trigeminal ganglion and its roots
4. Tympanic
5. Orbital

Question 8

Meningeal

Answer 8

Dura matter

Question 9

Tympanic

Answer 9

Tympanic cavity

Question 10

Orbital

Answer 10

Orbit via superior orbital fissure

Question 11

Applied anatomy

Answer 11

May be torn in:
1. Temporal fractures
or
2. Separating dura from bone
Leading to extradural hemorrhage
Trephining is necessary in reducing cerebral compression