T1L2 Skull and cranial cavity

Question 1

What is the innervation to the scalp

Answer 1

Trigeminal nerve

spinal cutaneous nerves

Question 2

What are the 2 layers of the dura mater

Answer 2

endosteal

meningeal

Question 3

What is the nerve supply to the dura mater

Answer 3

CN 5 10, C1-3, Sympathetic

Question 4

What is the blood supply to the dura

mater

Answer 4

middle meningeal artery

Question 5

What does the falx cerebri seperate?

Answer 5

Seperates cerebral hemispheres

Question 6

What does the tentorium cerebelli seperate?

Answer 6

Seperates cerebellar hemispheres from cerebral hemispheres

Question 7

What does the falx cerebelli do?

Answer 7

Seperates cerebellar hemispheres

Question 8

Describe the arachnoid mater

Answer 8

Thin, avascular layer between pia and dura

Loosely applied layer with projections (arachnoid granulations)

Question 9

What can damage to MMA cause?

Answer 9

Extradural (Epidural) haematoma

Question 10

What can cause a tentorial herniation?

Answer 10

space occupying lesion causing herniation of temporal lobe

Question 11

What structure produces CSF?

Answer 11

produced by choroid plexus in brain ventricles

Question 12

What is leptomeningitis

Answer 12

Infection and inflammation in the arachnoid and pia mater (the leptomeninges).

Infection may enter the subarachnoid space and enter into the blood (septicemia).

Question 13

What is the main blood supply to the brain?

Answer 13

ICA and vertebral arteries

Question 14

What does the anterior cerebral supply?

Answer 14

• medial and superior surfaces of the brain

- frontal pole.

Question 15

What does the middle cerebral supply?

Answer 15

• lateral surfaces

- temporal pole

Question 16

What does the posterior cerebral supply?

Answer 16

• inferior surfaces

- occipital pole

Question 17

Dural venous sinuses

Answer 17

Sphenoparietal sinus

cavernous sinus

superior petrosal

transverse sinus

sigmoid

terminates at IJV