Internal Capsule-Anatomy

Internal Capsule (Anatomy descriptions)
-parts (anterior limb, genu, posterior limb, sublentiform nucleus, retrolentiform nucleus)
-tracts (afferents and efferents passing each part)
- a video

1. INTERNAL CAPSULE (PARTS AND RELATIONS ) MARYAM JAMILAH BINTI ABDUL HAMID 082013100002 IMS BANGALORE

2. Coronal sectional of the brain Superior Inferior

3. Relations Transverse section Medially: Head of caudate nucleus Thalamus Laterally: Lentiform nucleus ( globus pallidus & putamen ) Ant. Med. Lat. Post.

4. Upwards: corona radiata Downwards: crus cerebri of the midbrain Sup. Ant. Post. Inf.

5. PARTS Anterior limb Posterior limb Genu Retrolentiform part Sublentiform part

6. Ant. Med. Lat. Post.

7. Sup. Post. Ant. Inf.

8. MRI

9. Why do we need to learn about internal capsule?

10. Ant. Med. Lat. Post.

11. PART DESCENDING TRACTS ASCENDING TRACTS Anterior limb Frontopontine fibres Anterior thalamic radiation ( fibres from ant. & med. nuclei of thalamus) Genu Corticonuclear fibres (a part of pyramidal tract; motor nuclei of cranial nerves ) Ant. part of superior thalamic radiation ( fibres from post. ventral nucleus of thalamus) Posterior limb Corticospinal tract (pyramidal tract; upper limb, trunk & lower limb) Corticopontine fibres Corticorubral fibres a) Superior thalamic radiation b) Fibres from globus pallidus to subthalamic nucleus Retrolentiform part Parietopontine & occipitopontine fibres Fibres from sup. colliculus & pretectal region Posterior thalamic radiation :- Optic radiation (mainly) Fibres connect thalamus to parietal & occipital lobes (partly) Sublentiform part Parietopontine & temporopontine fibres Fibres between temporal lobe & thalamus a) Auditory radiation b) Fibres connect thalamus to temporal lobe

12. REFERENCES Chaudrasia Volume III, Edition 6 th https:// www.youtube.com/watch?v=qLz7w5ow8uw

13. THANK YOU ~~ ~