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Understanding Basal Ganglia Transition and Blood Supply to Forebrain

Explore the transition levels in the basal ganglia system and learn about the blood supply to the forebrain through interventricular foramen. Specific nuclei and structures are identified in this detailed study guide.

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Understanding Basal Ganglia Transition and Blood Supply to Forebrain

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  1. Lab 11 Basal Ganglia System & Blood Supply to Forebrain

  2. transition between head & body = level of interventricular foramen (like level of transition between frontal horn & body of lateral ventricle) 2 (nucleus, be secific) Body of caudate nucleus 1 (nucleus, be specific) Head of caudate nucleus Interventricular foramen 3 (space)

  3. 5 (nucleus, be specific) 1 8 9 2 3 10 Thalamus Thalamus 4 What are the two components of the lenticular nucleus? Putamen & Globus Palidus

  4. 5 (nucleus, be specific) 1 2 3 4

  5. 1 2 3

  6. 1 2 3 4

  7. 5 Anterior (frontal) horn of lateral ventricle 6 nucleus 4 Anterior (frontal) horn of lateral ventricle Septum pellucidum head of caudate nucleus 3 nucleus head of caudate nucleus Anterior Limb, IC 7 2 Anterior Limb, IC 8 putamen 1 putamen 9 nucleus accumbens

  8. body of caudate nucleus (part of lateral wall of body of lateral ventricle 1 Posterior limb, internal capsule 2 Insular cortex Putamen Globus pallidus (only small fragment left) 3 5 Lateral thalamus (this image Is posterior to the VL nucleus) 4

  9. Posterior limb, IC Posterior limb, IC 7 4 9 nucleus Cortical fibers In crus cerebri Body of caudate Body, lateral ventricle Body, lateral ventricle 1 10 2 nucleus Body, caudate nucleus General position, Tail of caudate 11 nucleus lentiform nucleus 5 • Tentorium • cerebelli • (inner edges • tentorial notch 8 thalamus MIDBRAIN 3 Tentorium cerebelli Temporal horn, Lat. Ventricle (very dark) 12 PONS substantia nigra 13 MEDULLA 6 Substantia nigra internal capsular fibers enter midbrain lateral to substantia nigra

  10. 4 Anterior (frontal) horn of lateral ventricle 5 nucleus 1 anterior limb, internal capsule head of caudate nucleus 6 putamen 7 Globus pallidus Genu, internal capsule (interventricular foramen) 2 8 thalamus 3 Posterior limb, internal capsule 9 Atrium of lateral ventricle III Ventricle

  11. 3 nucleus 4 2 5 nucleus 1 6

  12. What neurologic signs & symptoms would this patient have? What anatomic structure is affected by the lesion? The patient would develop over the course of several months “unintentional, forceful, flinging movements” of his contralateral limbs, i.e. right upper and lower limbs. These involuntary movements resolved after several weeks of anti-toxoplasmosis treatment . The rim enhancing lesion is in the location of the subthalamic nucleus.

  13. Caudate Body Insular cortex Posterior Limb Int. Capsule Putamen Thalamic Fasciculus Globus pallidus What is the ~location of the: Insular Cortex? Caudate Body? Posterior Limb of IC? Putamen? Thalamic Fasciculus? Globus Palidus?

  14. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

  15. 2 1 3 4 5 6

  16. 1 2 3 5 4

  17. 1 2 3

  18. 2 1 3 4 5

  19. 3 4 1 2 5

  20. 1 2 3 4 5

  21. 4 1 5 6 8 7 3 9 2

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