Telencephalon And Meninges

Question 1

Gustatory cortex is part of?

Answer 1

Insula

Question 2

What percent of the cortex is involved in association and cognition?

Answer 2

80%

Question 3

Corpus callous comprises of?

Answer 3

Genu
Body
Splenium

Question 4

Why are basal ganglia important?

Answer 4

For control of posture and movement

Question 5

Where is basal ganglia?

Answer 5

Base of forebrain

Question 6

Corpus striatum splits into?

Answer 6

Lentiform nucleus- putamen and globus pallidus

Caudate nucleus

Question 7

Basal ganglia connect with?

Answer 7

Motor cortex and substantia nigra in the midbrain

Question 8

Caudate nucleus sits in?

Answer 8

Wall of lateral ventricle

Question 9

What does internal capsule do?

Answer 9

Connects cortex to brainstem

Question 10

Where does hippocampus sit?

Answer 10

In floor of lateral ventricle

Question 11

What connects the hippocampus and mammillary bodies?

Answer 11

White matter tract- fornix

Question 12

Where can amygdala be found?

Answer 12

At tip of the inferior horn of lateral ventricle

Question 13

Cranial dura consists of 2 layers?

Answer 13

Endosteal layer- lines inside of cranium

Meningeal layer- lines brain and spinal cord

Question 14

What is blood supply to dura?

Answer 14

Middle meningeal artery, which is branch of maxillary from external carotid

Question 15

Where does the MMA SIT?

Answer 15

IN THE ENDOSTEAL LAYER OF THE DURA

Question 16

What is the nerve supply to the dura?

Answer 16

Trigeminal 5 nerve

But vagus nerve and cervical spinal nerves 1-3

Question 17

What is special about dura?

Answer 17

Only part of the CNS with a sensory supply

Question 18

Meningeal layer of dura splits cranial cavity into compartments through?

Answer 18

Flax cerebri- separates the cerebral hemispheres
Tentorium cerebell- cerebellar from cerebral hemispheres
And falx cerebelli

Question 19

Extradural?

Answer 19

Trauma to MMA

Question 20

Subdural?

Answer 20

Trauma to cerebral veins

Question 21

Transtentorial herniation?

Answer 21

Displacement of brain through opening in tentorium cerebelli

Caused by brain injury or tumour

Question 22

Arachnoid and pia are called?

Answer 22

Leptomeninges

Question 23

Dura venous sinuses are found?

Answer 23

Between endosteal and meningeal layers of dura.

They drain blood and CSF from brain into internal jugular veins

Question 24

Network of dura venous sinuses?

Answer 24

1. Superior Sagitta
2. Inferior Saggital becoming straight
3. Then occipital
   1,2,3 and 4 become confluence of sinuses 5
4. Carvenosus becomes superior petrosal
   Confluence becomes transverse which joins with petrosal and becomes sigmoid
   Then internal jugular vein

Question 25

Sinuses drain blood from?

Answer 25

Cranium via diploid veins Extracranial sites via emissary veins Brain via cerebral veins

Question 26

Which veins provide route of infection into cranial cavity?

Answer 26

Emissary

Question 27

What passes through carvenous sinuses?

Answer 27

CN3-6 and internal carotid arteries

Question 28

Carvenous sinus receives blood from?

Answer 28

Cerebral veins, emissary veins, ophthalmic veins and sphenoparietal sinus