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Medulla Oblongata Anatomy - External & Internal (White & Grey matter) + QUIZ

Content: 0:00 Introduction 1:03 Topography of the Medulla 1:52 Anterior Surface of the Medulla 4:19 Posterior Surface of the Medulla 5:47 Internal Surface of Medulla 7:08 Grey Matter of Medulla 7:51 White Matter of Medulla (Ascending Tracts) 11:58 White Matter of Medulla (Descending Tracts) 16:11 QUIZ! ------------------------------- 🫀 Join:    / @taimtalksmed   📷 Follow my IG:   / taimtalksmed   💝 Donation link: https://www.buymeacoffee.com/taimtalk... ------------------------------- Topography of the Medulla Oblongata: - Lies above the Spinal Cord, Below Pons, In front of the Cerebellum, on clivus, above foramen magnum - 2,5 cm length - Anterior Surface - Posterior Surface Anterior Surface of the Medulla Oblongata: - Anterior Median Fissure (Fissura Mediana Anterior) - Right Anterolateral Sulcus (Sulcus Anterolateralis Dexter) - Left Anterolateral Sulcus (Sulcus Anterolateralis Sinister) - Right Posterolateral Sulcus (Sulcus Posterolateralis Dexter) - Left Posterolateral Sulcus (Sulcus Posterolateralis Sinister) - Pyramids of the Medulla Oblongata (Pyramis Medullae Oblongatae) ○ Contain deccusation of pyramid (Decussation Pyramidum) - Olives of the Medulla (Oliva) - Cranial Nerve XII (Hypoglossal Nerve) from anterolateral sulci - Cranial Nerve IX (Glossopharygeus) - Cranial Nerve X (Vagus) - Cranial Nerve XI (Accessorius) Posterior View of Medulla Oblongata: - Posterior Median Sulcus (Sulcus Medianus Posterior) - Gracile Fascicle (Fasciculus Gracilis) ○ Gracile Tuberce (Tuberculum Gracilis) - Cuneate Fascicle (Fasciculus Cuneatus) ○ Cuneate Tubercle (Tuberculum Cuneatus) - Inferior Cerebellar Peduncle (Pedunculus Cerebellaris Inferior) Gray Matter of Medulla - Gracile Nucleus (Nucleus Gracilis) - Cuneate Nucleus (Nucleus Cuneatus) - Reticular Formation (Formatio Reticularis) - Olivary Nuclei (Nuclei Olivares) - Nuclei of the Rhomboid Fossa (Cranial nuclei of X-XII) Ascending tracts of Medulla: - Gracile Fascicle (Fasciculus Gracilis) to Gracile Nucleus ○ Epicritic Sensibility (Proprioception and Mechanoreceptios) - Cuneate Fascicle (Fasciculus Cuneatus) to Cuneate Nucleus - External Arcuate Fibers (Fibrae Arcuatae Externae) - Internal Arcuate Fibers (Fibrae Arcuatae Internae) ○ Decussation of the Lemnisci (Deccusatio Lemnisci Medialis) ○ Medial Lemniscus (Lemniscus Medialis) - Anterior Spinocerebellar Tract (Tractus Spinocerebellaris Anterior) ○ Throguh inferior cerebellar peduncle - Posterior Spinocerebellar Tract (Tractus Spinocerebellaris Posterior) ○ Through Superior Cerebellar Peduncle - Anterior Spinothalamic Tract (Tractus Spinothalamicus Anterior) - Lateral Spinothalamic Tract (Tractus Spinothalamicus Lateralis) Descending tracts of the Medulla: - Corticospinal Tract (Tractus Corticospinalis) - Decussation of Pyramids (Decussatio Pyramidum) - Lateral Corticospinal Tract - Anterior Corticospinal Tract - Corticonuclear Tract (Corticobulbar tract) - Vestibulospinal Tract (Tractus Vestibulospinalis) - Olivospinal Tract (Tractus Olivispinalis) - Olicocerebellar Tract (Tractus Olivocerebellaris) - Rubrospinal Tract (Tractus Rubrospinalis) - Tectospinal Tract (Tractus Tectospinalis) - Lateral Reticulospinal Tract (Tractus Reticulospinalis Lateralis) - Medial Reticulospinal Tract (Tractus Reticulospinalis Medialis) - Medial Longitudinal Fasciculus (Fasciculus Longitudinalis Medialis) QUIZ Sources used in this video: - Memorix Anatomy 2nd Edition by Hudák Radovan (Author), Kachlík David (Author), Volný Ondřej (Author) - Biorender - University notes and lectures