HEAD AND ANTERIOR CERVICAL STRUCTURES. 53 



Fibres of the corpus callosum : 



Fibres from the genu. Forceps minor. 

 Fibres from the body : 

 Uppermost fibres. 

 Intermediate fibres. 

 Lowest fibres. 



Anterior set. 

 Posterior set. Tapetum. 

 Fibres from the splenium. Forceps major. 

 Expose the lateral ventricles, see Dissection, 735. (7>9) 



The Lateral Ventricles, 735-6-7-8-9. (719-20-1-2) 

 The body. 

 Anterior cornu. 

 Posterior cornu. Hippocampus minor, or calcar avis. Bulb of the cornu. 



Dissection. 



Inferior or descending cornu. 



Floor. Roof. 



Eminentia collateralis. 



Hippocampus major, or cornu Ammonis. 



Corpus fimbriatum, taenia hippocampi, or fimbria. 

 Choroid plexuses. 



Foramina of Monro. Foramen commune anterius. 

 Fascia dentata, or dentate convolution. 

 Fascia cinearea. 



Dissection. 



Basal ganglia of the Hemispheres, 739-40-1-2. ( 7 * 2-3-4-5) 

 Nucleus caudatus : 



Head. Tail. 

 Nucleus lenticularis. 



Internal and external medullary laminae. 

 Globus pallidus. 

 Putamen. Ansa lenticularis. 

 Claustrum. 

 Amygdaloid nucleus. 



Taenia semicircularis, or stria terminalis. Lamina cornea. 

 Inner capsule, genu. 

 Outer capsule. 

 Anterior commissure. 



Dissection. 



Fornix, 742-3. (725-6) 



Body. Posterior pillars. Lyre. Fimbria. 



Anterior pillars. 

 Corpora albicantia. Bundles of Vicq d'Azyr. 



Septum lucidum, 743. (726) 



Fifth or Sylvian ventricle, 743. (726) 



Great transverse fissure of the cerebrum, 743. (726-7) 



Velum interpositum, or tela choroidea superior, 743-4. 727-8. 

 Choroid plexuses, 744. (728) 

 Dissection, 744-5. (728) 



The Thalamencephalon, 745-6-7-8-9. (728-9-30-1-2-3) 

 Third ventricle. 



Posterior commissure. 



Middle or gray commissure. 



Floor. 



Central gray matter of the third ventricle. 



