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Medulla Oblongata Anatomy - External u0026 Internal (White u0026 Grey matter) + QUIZ

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Taim Talks Med

Content:
Introduction: 0:00
Topography of the Medulla: 01:03
Anterior Surface of the Medulla: 01:52
Posterior Surface of the Medulla: 04:19
Internal Surface of Medulla: 05:47
Grey Matter of Medulla 07:08
White Matter of Medulla (Ascending Tracts): 07:51
White Matter of Medulla (Descending Tracts): 11:58
QUIZ! 16:11


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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 XXII)

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

posted by kustlichtkl