Telencephalon and Cerebral Lobes

Telencephalon (cerebral hemispheress Dimensions Anteropanterior & 16.com •Superin to 12cm weight & llogy in males.. looag in females Surfaces & Lateral, medial, inferior • In the medial surface, betunen the two hemispheres there is a meningeal A layer called Fald cerebri, which is sickle Shaped •Also, what joins the hemispheres bogether callosum, which connects them together. is the great commisure called corpus. across the midline •A second horizontal Pold of dura matter separates the cerebral. hemispheres from the cerebellum and is called Tentorium Cerebelli *When sapariling the cortical guys and pulling them in sve stringed live thaواستو be hus meters long (in human) •In the cercloral hemispheres, there are sulci which are devided based on their deptta Fearsphersticlabes & Act that devide the hemispheres into like 112-Sudal that devide the lobes intu gyri lined suloi theet bovides the gyri into sinallerts • The main Sulkus in the brain is the central sulcus. It separates the frontal lobe from Parietal lobe. • Suki Central sulcus. lateral Sulcus Parieto-occipitul suleas Calcarine sulcus Cingulate sulcus they devide The hemisphere's They are deep Sulci, but do not deride the transpheres. gyrus leferung -NILAI- Posiced lobes Supermarily - Central Sulcus Sturts from the superior border of each hamsphere, and goes down and ends before the lateral sulcus -Lateral Sulcus: starts from the inferior surface, then acendes towards the Bilateral side where it devides into three branches 8. Ankriors which guas conding loverds thodal of the Prontal labe puel . Acending acerals straight in fractal labe Posterer ramus & continues bloatwa (Pal Sp an the lateral. side and ending in perittal lobe It separates frontal lobe & temporal labe -Parieto-occipital sulcus & Between parietal and occipital Iobe •It appears deeper from the medial surface. Cerebral lobes •In the brain hemispheres, there are five lobes & frontal, peristal, temporel, occipital, and Insula •Insula is deep in the Cerebrum. It can be approached and visualized by opening the parietal sulcus. Its called Insula or Island because its deep and there is white matter surrounding it Frontal lobe 8-located anterior to central sulcus and superior to lateral Sulcus - Biggest lobe & the brain functions: -motor functions. -working memory -higher cortical functions (decesion making, Judgement, anticipation *Basically frontal lobe is responsible for excution(ould) of the brain* NILAI -Speech wewe meant Nila 8. Precentral sulcus Frontal lobe has 3 sulei •Superior frontal sulkes. Inferior frontal sulcus •Frontal lobe has 4 Gyri: 1. Precentral Giyrus 2 Sup. Frontal Gayrus Middle Frontal Gyrus. "Inferior Frontal Gyrus @Precentral gyrus s' betwein central steas and affrontal guri medial •It continues to the surface. primary mober area (4" Brodmacies) is a pr of the precantined gyrus Sup frontol gyrus A supplementary motor area 2. Superior to Sup. frontal sulcus •Its continuous with the meldte medial surface located in the lateral surface Middle frontal gyrus & •Between superior and inferior frontal suki Can only be seen in the lateral surface -Secondary motor area has the Moter Eye Field Inferior frontal gyrus 3-located on the lateral surface and is continuous towards inferions surface •Its called the Orbitofrontal gyrus. Another classification of brain areas was by Broadman, a neuresventart which discovered a functional classification called localization. However, the technique • used nowdays is circully, which emphasizes that many areas are involved in a specifie function not neccessarily by a single area (e.g. broadman area 4) ex. 8 when you are looking at a car moving, you are visualizing in -NILAI the occipitd love ; and recognizing that this is a cape web in the pre froutal area... and other sensations in different areas t Corte