Head And Neck Imaging DLA

Question 1

What important structures are contained in the anterior cranial fossa?

Answer 1

Anterior cranial fossa:
Frontal bone –sphenoidal crest of the lesser wing of the sphenoid bone

•Cranial Nerve I

Question 2

What is contained middle cranial fossa?

Answer 2

Middle cranial fossa:
• Cranial Nerve II
•Superior orbFital fissure III,IV,VI,V1- oph
•Foramen rotundum – PT fossa V2- max
•Foramen ovale – IT fossa V3-man
•Foramen spinosum – middd meningeal
•Foramen lacerum- Greater petrosal

Question 3

What is contained in the poster cranial fossa?

Answer 3

Posterior cranial fossa:
•Internal acoustic meatus –VII,VIII •Jugular foramen –IX,X,XI ,sigmoid
  sinus
•Hypoglossal canal- XII 
•Foramen magnum

Question 4

What does the carotid sinus supply?

Answer 4

1. Cervical part – common carotid
2. Carotid canal-enters the cranial cavity through the carotid canal in the petrous part of the temporal bone
3. Cavernous sinus- CNVI CNIII,CNIV

4.Cerebral part –Two terminal branches
•Anterior cerebral –most of the medial and superior Surfaces of the brain and frontal pole
•Middle cerebral –lateral surface of the brain and temporal pole