Anatomy (WM)

Question 1

Which Gyrus forms the uncus?

Answer 1

Parahippocampal

Question 2

What are the gyri of insula?

Answer 2

Front to back: Accessory gyrus Three short (ant middle post) Two long (ant post)

Question 3

Name four functions of the insula

Answer 3

A visceral and autonomic sensorimotor area Olfactogustatory region Socio-emotional region Cognitive region - detection of novel stimuli

Question 4

What passes through the annulus of Zinn?

Answer 4

Inside: CN III (superior and inferior divisions) CN VI Nasociliary branch of V1 Optic nerve Opthalmic artery

Outside (sup and inf ophth veins, IV, lacrimal nerve of V1, frontal of V1)

Question 5

Name the lobules and sulci of the brain on superior surface looking medially from occipital to frontal pole?

Answer 5

Lingual gyrus Calcarine Sulcus Cuneus Parietooccipial sulcus Precuneus Marginal Sulcus Paracentral Lobule (contraining central sulcus) Superior Frontal Gyrus (precentral sulcus does not go all the way to midline) Gyrus rectus (a bit past the pole)

Question 6

What are the two gyri in the inferior parietal lobule? (anterior to posterior)

Answer 6

Supramarginal gyrus Angular gyrus

Question 7

What the three gyri of the operculum? (posterior to anterior)

Answer 7

Pars opercularis Pars triangularis Pars orbitalis

Question 8

What’s lateral to the gyrus rectus?

Answer 8

The orbital Gyri

Question 9

From lateral to medial what are the three gyri and 2 sulci on the underside of the temporal lobe?

Answer 9

Inferior temporal gyrus Occipitotemporal sulcus Fusiform gyrus Collateral sulcus Parahippocampal gyrus

Question 10

What’s the blood supply of the anterior limb, genu and posterior limbs of the internal capsule?

Answer 10

As you go superiorly it all becomes MCA Inferiorly: ACA (Heubner) for anterior Genu is direct ICA branches and ACA Posterior limb (retrolenticular) is Anterior choroidal

Question 11

Draw a cross-section throught the spinal cord

Answer 11

Question 12

Describe the floor of third ventricle (posterior to anterior)?

Answer 12

Basilar Artery

Mamillary bodies

3rd Ventricular Floor

Infundibulum

Optic Chiasm

Question 13

What are the origins of the carotid artery?

Answer 13

Right - brachiocephalic trunk

Left - aorta

Question 14

What are the branches of the external carotid?

Answer 14

Superior thyroid

Ascending pharyngeal

Lingual

Facial

Occipital

posterior (A)uricular

Maxillary

Superficial temporal

Question 15

What are segments of the carotid? (rhoton)

Answer 15

C1 - cervical

C2 - petrous

C3 - cavernous

C4 - supraclinoid

—> ophthalmic

—> communicating

—> choroidal

Question 16

What are the branches of the petrous carotid?

Answer 16

Caroticotympanic artery

Vidian artery

Question 17

What are the branches of the cavernous carotid?

Answer 17

Meningohypophyseal trunk (inferior hypophyseal and the Italian artery)

Inferolateral trunk (dura and nerves)

Question 18

What’s the carotid cave?

Answer 18

Potential space after distal dural ring on lateral side of carotid

Question 19

What are the intradural branches of the carotid?

Answer 19

Ophthalmic

Superior hypophyseal

Communicating

Anterior choroidal

Question 20

Describe the course of the temporal/frontalis branch of facial nerve

Answer 20

Pitanguy’s line. 0.5cm inferior to tragus to a point 1.5cm lateral and superior to eyebrow