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

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 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

Пікірлер: 128

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  • @TaimTalksMed
    @TaimTalksMed Жыл бұрын

    PS! There's a little mistake in the table at the end (grey matter). Number 2 and 3 are switched. Apologize for the minor mistake!

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    @jennyvarshavski3138

    Жыл бұрын

    There is a mistake only in 2 and 3 right ??

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    @jennyvarshavski3138

    Жыл бұрын

    Rest of the table is correct right??

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    2 ай бұрын

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    @TaimTalksMed

    3 ай бұрын

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    @TaimTalksMed

    2 жыл бұрын

    Glad to hear!

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    @lucasmistery62302 жыл бұрын

    First off, thanks so much for your videos, they are all really informative and so well made! However I have one question here: At about 13:40, you talk about the olivocerebellar tract and how it comes form the olivary nuclei and then goes on into the cerebellum. Wouldn't this be a sensory/ascending pathway and thus blue? Hoping you will see this and answer me because it confuses me a little! Thank so much!😃

  • @TaimTalksMed

    @TaimTalksMed

    2 жыл бұрын

    Totally understand your confusion! Keep in mind that the olivocerebellar pathway initially relays information from the cerebral cortex that projects to the olivary nuclei and then to the cerebellum. So if you make a ''mindmap'' of this pathway, you'll see that it is in fact descending. You can blame me for not elaborating on this one =)

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    @lucasmistery6230

    2 жыл бұрын

    @@TaimTalksMed Ah I see that makes sense!! Thanks so much for your very quick answer and explanation! Got it 😃

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  • @TaimTalksMed

    @TaimTalksMed

    2 жыл бұрын

    You're welcome! Glad you found it helpful =)

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  • @maradol3813
    @maradol3813 Жыл бұрын

    hey at the end at min 16:19 u switched the names of cuneate nucleus and gracile nucleus ? and u mentioned in the video when u were explaining them other way around

  • @TaimTalksMed

    @TaimTalksMed

    Жыл бұрын

    Thank you for pointing that out! I've pinned a little note in the comment section :)

  • @yadinoori7372
    @yadinoori73722 жыл бұрын

    Thank u

  • @ahmedabdellatif1365
    @ahmedabdellatif13654 ай бұрын

    are pyramidal & medial lemininsci occur at vertical or transverse plane? in another way : do the two decussations actually appear in a transverse section ?

  • @TaimTalksMed

    @TaimTalksMed

    4 ай бұрын

    Deccusations in general can be seen in both planes. You'd rather visualize these tracks using visual imaging like track density imaging and tractographies though (as it's hard to localize tracts in the white matter on a cadaver). I only show relative schemes though, really only to help with the visual learning. Hope you found the video helpful nevertheless 😊

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    @dr.venkataramulumutyalapat2437 Жыл бұрын

    good dedication . keep it up. u r bit fast. try to tune for best speed..

  • @BloxyFliks
    @BloxyFliks Жыл бұрын

    thanks😆😁😁😃😀

  • @hiraafzal6208
    @hiraafzal62082 жыл бұрын

    Why decussation occurs? What's its significance? Please tell the answer!

  • @kalavallambhan9062
    @kalavallambhan9062 Жыл бұрын

    i suppose this is the lower medulla... as we are able to see the nucleus cuneatus and gracillis ..am i right ?

  • @drousa9388
    @drousa93882 жыл бұрын

    تحفة تحفة تحفة شرحك بكددد جامممد جدااا متشكرة حضرتك 😭❤️ Actually Your explanation is so great, you saved me. Thank you soooooooooooooo match ❤️

  • @TaimTalksMed

    @TaimTalksMed

    2 жыл бұрын

    Really glad to hear! 💪🏽🥳💝 All the best with your studies!

  • @ahmedhersi9188
    @ahmedhersi91882 жыл бұрын

    Please upload pons,midbrain and reticular formation have my last attempt on the 17th September 😭

  • @TaimTalksMed

    @TaimTalksMed

    2 жыл бұрын

    Hey man! Glad you're finding the videos helpful! Pons is up on Sunday, 4th ventricle and rhomboid fossa on the 15.09. I'm sure you'll do great in the test, just keep your head cold and focused 💪

  • @TheMinenow1
    @TheMinenow12 жыл бұрын

    Thank you for a very good explanation of the structure and function of the medulla. I have several autoimmune diseases and had inflammation in this portion of the brain as a consequence. It is helpful in explaining some of my symptoms, wish there were better methods for helping these symptoms!

  • @TaimTalksMed

    @TaimTalksMed

    2 жыл бұрын

    Sorry to hear about your condition, and I truly hope they find better treatment options in the future as well! I'm glad I could contribute to your learning =)

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    @nitesh3473 Жыл бұрын

    Sooooooo gooodddddd

  • @SharkFishSF
    @SharkFishSF Жыл бұрын

    What happens if medulla oblongata is constricted?

  • @trayanc1496
    @trayanc14962 жыл бұрын

    wonderful explanation. only if it shows first when searching :l

  • @TaimTalksMed

    @TaimTalksMed

    2 жыл бұрын

    Glad it helped! Yeah the KZread algorithm's not my friend unfo😅 The more people reacts with the video, the higher it gets in the search results though; so I'm staying positive! 💪

  • @shifataskeen1354
    @shifataskeen1354 Жыл бұрын

    2 is nucleus gracilis and 3 is nucleus cuneatus

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  • @illyy-dr8db
    @illyy-dr8db2 жыл бұрын

    guys i dont understand the kind of fibres that goes to the gracilis nucleus,i understand that there coming from the lower part of the body but what is propreception what kind of fibres are they ???

  • @TaimTalksMed

    @TaimTalksMed

    2 жыл бұрын

    They mainly come from muscle tendons and joints; so they help your brain understand the position of your joints and the stretch of the muscles :)

  • @illyy-dr8db

    @illyy-dr8db

    2 жыл бұрын

    @@TaimTalksMed thanks a lot brother

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    @nargizatashmetova9200 Жыл бұрын

    Can I translate it into Uzbek and post it on the channel?

  • @TaimTalksMed

    @TaimTalksMed

    Жыл бұрын

    Absolutely! As long as you refer it back to the original video :)

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    @satishwadje7729 Жыл бұрын

    Can i get these notes

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    @moonyy10372 жыл бұрын

    Where can I find this brain model?

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    @TaimTalksMed

    2 жыл бұрын

    I use the program Complete Anatomy :)

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    @Rebecca-zr3lu2 ай бұрын

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    @vivekkashyap8462 Жыл бұрын

    I can't understand

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    @Rebecca-zr3lu2 ай бұрын

    Blessings in an abundance of the faith. I salute you. 😘🙏Grace and peace be unto you and to this place. God bless you. 🤍🌈🤍Thank you. 💌Will you believe and receive Jesus Christ as your LORD and personal saviour??? I do. 😊

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    @barracudanr4959 Жыл бұрын

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    @nickb8507 Жыл бұрын

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    @barracudanr4959 Жыл бұрын

    Ghj