Pons - External and Internal (White & Grey matter) + QUIZ | Anatomy

Content:
0:00 Introduction
0:59 Topography of Pons
1:28 Anterior Surface of Pons
3:09 Posterior Surface of Pons
4:26 Internal Surface of Pons
6:11 Gray Matter: Basilar Part
7:06 Gray Matter: Tegmentum of Pons
7:42 White Matter: Basilar Part
9:58 White Matter: Tegmentum of Pons
16:14 QUIZ!
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Topograpgy of the Medulla Oblongata:
- Lies above the Medulla, Below Mesencephalon, In front of the Cerebellum
- Anterior Surface
- Postrior Surface
Anterior Surface of the Medulla Oblongata:
- Basilar Sulcus (Sulcus Basilaris)
- Middle Cerebellar Peduncles (Pedunculus Cerebellaris Media)
- Cranial Nerve IV: Nervus Abducens between pyramid and pons
- Between olives and middle cerebellar peduncles
○ Cranial Nerve VII: Facialis
○ Cranial Nerve VIII: Vestibulocochlearis
- Surface of Pons: Cranial Nerve V Trigeminus
Posterior View of Medulla Oblongata:
- Rhomboid Fossa (Fossa Rhomboidea)
- Cerebellar Peduncles (Pedunculi Cerebelli)
○ Inferior Cerebellar Peduncle
○ Middle Cerebellar Peduncle
○ Superior Cerebellar Peduncle
Internal Surface of Pons:
- Cochlear Nerve form Trapezoid Body (Corpus Trapezoideum)
- Dorsal Part: Tegmentum of Pons
- Ventral Part: Basilar Part
Gray Matter in Basilar Part of Pons:
- Pontine Nuclei (Nuclei Pontis)
○ For Frontopontine Tract
○ PontoCerebellar Tract (Transverse Pontine Fibers)
○ Cerebellorubral Tract
○ Rubrospinal Tract
Gray Matter in Tegmentum of Pons:
- Reticular Formation (Formatio Reticularis)
- Nuclei of Trapezoid Body (Nuclei Corporis Trapezoideum)
- Nuclei of the Rhomboid Fossa (Cranial nuclei of X-XII)
White Matter of Basilar Part of Pons:
- Pontocerebellar Tract (Transverse Pontine Fibers)
○ Coming from Corticopontine tract
§ Frontopontine Tract
§ Parietopontine Tract
§ Temporopontine Tract
§ Occipitopontine Tract
- Corticospinal Tract (Tractus Corticospinalis)
- Corticonuclear Tract (Corticobulbar tract)
White Matter in Tegmentum of Pons:
Ascending Tracts
- Medial Lemniscus (Lemniscus Medialis)
○ Gracile Fascicle (Fasciculus Gracilis) to Gracile Nucleus
○ Cuneate Fascicle (Fasciculus Cuneatus) to Cuneate Nucleus
○ Medial Lemniscus is formed through Internal Arcuate Fibers (Fibrae Arcuatae Internae)
○ Epicritic Sensibility (Proprioception and Mechanoreceptios)
- Spinal Lemniscus (Lemniscus Spinalis)
○ Anterior Spinothalamic Tract (Tractus Spinothalamicus Anterior)
○ Lateral Spinothalamic Tract (Tractus Spinothalamicus Lateralis)
- Trigemincal Lemniscus (Lemniscus Trigeminalis)
- Anterior Spiniocerebellar Tract (Tractus Spinocerebellaris Anterior)
- Lateral Lemniscus (Lemniscus Lateralis)
○ From Cochlear Nerve
Descending Tracts
- Vestibulospinal Tract (Tractus Vestibulospinalis)
- Rubrospinal Tract (Tractus Rubrospinalis)
- Tectospinal Tract (Tractus Tectospinalis)
- Reticulospinal Tract (Tractus Reticulospinalis)
- 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

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[@TaimTalksMed]

Hope the tests goes well! Glad your finding these videos helpful 💪

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neuro anatomy explained clearly ...xoxo ...could you solve few case study questions too would be really helpful in furthering the learning ..thank you sir

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gracile fascicle from muscle gracilis, located on the thigh.. that s how i remember
awesome videos! keep it up with the good work

[@TaimTalksMed]

Good one! A little creativity definetly helps remembering 😄

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I feel confident now 🤝

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[@TaimTalksMed]

I've put the standard publish days to be Wednesdays and Sundays at 11am (GMT+2). Glad your finding the videos helpful 😄

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Can a stroke in your pons be corrected or helped?

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[@TaimTalksMed]

Two videos will be uploaded at the start of October covering the basics of tonsil anatomy =)

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Thank you Doctor

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and also doctor please don't forget to talk about Salivary glands, I have exam next week
Thank you

[@TaimTalksMed]

@@alsharabyalsharaby1483 The salivary glands video will be published on October 13. You won't be able to watch them before your exam next week, unfortunately, but I'm very sure you'll ace the exam! 💪 (ps I'm still a student, not a doctor yet😁)

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please be clearer with the things you explain because there are differences between them for example during the description you said that the rubrospinal tract is responsible for supporting and coordinating voluntary movements while in the table at the end the rubrospinal tract is responsible for balance and posture.🤷🏻‍♂️🤷🏻‍♂️

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