2. Forebrain TelencephalonDiencephalon

4. Diencephalon

5. Division of diencephalon by hypothalamic sulcus 1- pars dorsalis 2- pars ventralis

6. hypothalamic sulcus

7. Pars dorsalis 1- dorsal thalamus 2- meta thalamus Epithalamus Thalamus

9. Thalamus from above

10. Epithalamus

11. Pars ventralis hypothalamus subthalamus

13. Two points about the diencephalon 1- Impar (median telencephalon) 2- just inf surface of Diencephalon is visible in the intact brain

14. Thalamus

15. Meaning of thalamus prechamber

16. Size of thalamus 3- 4 cm length 1.5 cm width

17. Surfaces and poles of Thalamus 4 surfaces Superior, inferior, medial and lateral Two poles Anterior and posterior

18. Sup surface of thalamus (Lat ventricle)

19. medial surface of thalamus ( third ventricle)

20. Inferior surface of thalamus

22. lateral surface of thalamus

24. Limitation of sup.surface At the lateral: THALAMUSTRAIATE GROOVE Content: similar vein and stria terminalis At the medial: Stria medullary Thalamic and Tenia Thalamic.

25. Sup surface of thalamus

26. Lamina Affix

27. Limitation of Medial Surface 1- at the above : Stria medullary Thalamic and Tenia Thalamic 2- at the below : Hypothalamic Sulcus

28. medial surface of thalamus

29. Interthalamic adhesion

30. Internal structural of Thalamus Internal medullary Lamina

33. Thalamus nuclei 1- Ant group (AD,AV,AM) 2- Medial group (MD) 3- Lateral group: A- ventromedial group(VA,VI or VL,VP) B- dorsolateral group (LD,LP,Pulvinar) 4- Reticular nucleus 5- Interalaminar nucleus 6- Medline nucleus

34. ANT. GROUP ANTRODORSALANTROVENTRALANTROMEDIAL

36. Papez’s circuit (Korsakow syndrom) 1- mamillary bodies 2- ant nuclei of thalamus 3- cinguli gyrus 4- hippocumus

37. Papez’s circuit

38. Hippocumpus

39. Medial group Medialis Dorsalis Comminucation with: Prefrontal( ability to solve the problem, General character, consciousness) Smell regions (limbic system)

40. Medial group

41. Lateral Group 1- Ventromedial 2- Dorsolateral

42. Motor function Sensory relay nuclei Vision and lingual function

44. Reticular nucleus Bilateral communication with cortex Pay attention

45. Intralaminar nuclei 1-paracentral 2- centromedian 3- centralis lat and medial

47. Function of Intralaminar nuclei Function of Intralaminar nuclei 1- sleep and Arousal and Awareness 2- pain

48. Midline nuclei ParaventriculrRhombolidalis

50. Function Reticular formation of brain stem Limbic system