Anatomy (WM) Flashcards
Which Gyrus forms the uncus?
Parahippocampal
What are the gyri of insula?
Front to back: Accessory gyrus Three short (ant middle post) Two long (ant post)
Name four functions of the insula
A visceral and autonomic sensorimotor area Olfactogustatory region Socio-emotional region Cognitive region - detection of novel stimuli
What passes through the annulus of Zinn?
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)
Name the lobules and sulci of the brain on superior surface looking medially from occipital to frontal pole?
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)
What are the two gyri in the inferior parietal lobule? (anterior to posterior)
Supramarginal gyrus Angular gyrus
What the three gyri of the operculum? (posterior to anterior)
Pars opercularis Pars triangularis Pars orbitalis
What’s lateral to the gyrus rectus?
The orbital Gyri
From lateral to medial what are the three gyri and 2 sulci on the underside of the temporal lobe?
Inferior temporal gyrus Occipitotemporal sulcus Fusiform gyrus Collateral sulcus Parahippocampal gyrus
What’s the blood supply of the anterior limb, genu and posterior limbs of the internal capsule?
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
Draw a cross-section throught the spinal cord
Describe the floor of third ventricle (posterior to anterior)?
Basilar Artery
Mamillary bodies
3rd Ventricular Floor
Infundibulum
Optic Chiasm
What are the origins of the carotid artery?
Right - brachiocephalic trunk
Left - aorta
What are the branches of the external carotid?
Superior thyroid
Ascending pharyngeal
Lingual
Facial
Occipital
posterior (A)uricular
Maxillary
Superficial temporal
What are segments of the carotid? (rhoton)
C1 - cervical
C2 - petrous
C3 - cavernous
C4 - supraclinoid
—> ophthalmic
—> communicating
—> choroidal
What are the branches of the petrous carotid?
Caroticotympanic artery
Vidian artery
What are the branches of the cavernous carotid?
Meningohypophyseal trunk (inferior hypophyseal and the Italian artery)
Inferolateral trunk (dura and nerves)
What’s the carotid cave?
Potential space after distal dural ring on lateral side of carotid
What are the intradural branches of the carotid?
Ophthalmic
Superior hypophyseal
Communicating
Anterior choroidal
Describe the course of the temporal/frontalis branch of facial nerve
Pitanguy’s line. 0.5cm inferior to tragus to a point 1.5cm lateral and superior to eyebrow
