Внешний спинной мозг (Поверхность, Сегменты, Спинномозговой нерв, Утолщения, Рефлекторная дуга) скачать в хорошем качестве

Внешний спинной мозг (Поверхность, Сегменты, Спинномозговой нерв, Утолщения, Рефлекторная дуга)

Content: 0:00 Introduction 1:07 Topography of Spinal Cord 2:44 External Surface of Spinal Cord 3:41 Spinal Segments 5:15 Spinal Nerve and Vertebral Canal 7:33 Enlargements of the Spinal Cord 8:27 Spinal Nerve Anatomy 14:13 Reflex Arch ------------------------------- 🫀 Join:    / @taimtalksmed   📷 Follow my IG:   / taimtalksmed   💝 Donation link: https://www.buymeacoffee.com/taimtalk... ------------------------------- Topography of Spinal Cord (Medulla Spinalis) Vertebral Canal (Canalis Vertebralis) Covered by: ○ Pia Mater ○ Arachnoid Mater ○ Dura Mater Foramen Magnus to L1/L2 40-45 cm long Medullary Cone (Conus Medullaris) Filum Terminale (Terminal Thread) Cauda Equina External Surface of Spinal Cord: Anterior Surface ○ Anterior Median Fissure (Fissura Mediana Anterior) ○ Right Anteriolateral Sulcus (Sulcus Anterolateralis Dexter) ○ Left Anterolateral Sulcus (Sulcus Anterolateralis Sinister) Posterior Surface ○ Posterior Median Sulcus (Sulcus Medianus Posterior) ○ Right Posterolateral Sulcus (Sulcus Posterolateralis Dexter) ○ Left Posterolateral Sulcus (Sulcus Posterolateralis Sinister) Segments of the Spinal Cord 8 cervical segments 12 thoracic segments 5 lumbar segments 5 sacral segemnts 1 coccygeal segments Spinal nerves going out throguh Intervertebral Openings (Foramina Intervertebralis) Relationship between the spinal cord and the vertebra: Spinous processes of cranial cervical vertebrae Correspond to same segment Spinous processes of caudal cervical vertebrae Segment +1 (e.g. vertebra C7 = spinal segment C8) Spinous processes of cranial thoracic vertebrae – segment + 2 (e.g. vertebra T3 = spinal segment T5) Spinous processes of caudal thoracic vertebrae – segment + 3 Vertebrae T10–T12 – lumbar segments L1–L4 Vertebrae T12–L1 (epiconus) – lumbar and sacral segments L5–S2 Vertebrae L1–L2 (conus) – sacral and single coccygeal segments S3–S5 and Co Enlargements of the Spinal Cord Cervical Enlargement (Intumenencia Cervicalis) ○ Brachial Plexus Lumbosacral Enlargement (Intumenencia Lumbosacralis) ○ Sacral and Lumbar Plexuses Anatomy of the Spinal Nerve: Spinal Nerves synapse with nuclei in gray matter of spinal cord Posterior Root / Sensory Root (Radix Sensoria) ○ Enter through the posterolateral sulci ○ Spinal Ganglion / Dorsal Root Ganglion (Ganglion sensorium nervi spinalis) ○ Pseudounipolar neurons Anterior Root / Motor Root (Radix Motoria) ○ Enter throguh the anterolateral sulci Spinal Nerve contain: ○ Sensory Fibers ○ Motor Fibers ○ Sympathetic Fibers (Between C8-L2) ○ Parasympathetic Fibers (Between S2-S4) Branches of the Spinal Nerve ○ Ventral Branch § Cervical Plexus § Brachial Plexus § Lumbar Plexus § Sacral Plexus ○ Dorsal Branch ○ White Ramus Communicans ○ Meningeal Branch Reflex Arch Mono-Synaptic Reflex ○ Patellar Tendon Reflex Multi-Synaptic Reflex ○ Withdrawal Reflex Sources used in this video: Memorix Anatomy 2nd Edition by Hudák Radovan (Author), Kachlík David (Author), Volný Ondřej (Author) Biorender University notes and lectures