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| Name | What is the PNS? (Classification, Spinal Nerve, Posterior Branch) |
| Video Uploader | Video From Taim Talks Med |
| Upload Date | This Video Uploaded At 20-07-2022 22:27:12 |
| Video Discription | Content: Introduction: 0:00 What is considered the PNS? 00:59 How to classify the PNS 02:05 Damage to Motor Neurons: 05:52 Spinal Nerve: 08:03 External Scheme of the Spinal Nerve: 08:50 Internal Scheme of Spinal Nerve: 13:05 Posterior Branch of Spinal Nerve: 16:25 Anterior Branch of Spinal Nerve: 17:55 ------------------------------- 💎Channel membership: https://www.youtube.com/channel/UCEr7pkSXVsHcBLLBcJAGV-Q/join 📷 Follow my IG: https://www.instagram.com/taimtalksmed/ 💝 Donation link: https://www.buymeacoffee.com/taimtalksmed ------------------------------- What is the Peripheral Nervous System? - Cranial Nerves 12 nerve pairs - Spinal Nerves 31 nerve pairs Classification of the PNS - Sensory System ○ Soamtic Sensory Fibers ○ Visceral Sensory Fibers ○ Exteroreceptors, Proprioreceptors, Periosteum - Motor System ○ Somatomotor System (Somatic system) § Voluntary control ○ Autonomic Nervous System / Visceromotor nervous system § Sympathetic Nervous System (C8-L2 Lateral horn) § Parasympahetic Nervous System (S2-S4 Lateral horn) § Enteric Nervous System (myenteric and submucosal plexuses in walls of digestive organs) Clinical Significance - Lower Motor Neuron damage ○ Located in anterior horn of spinal cord and nuclei of cranial nerves ○ Damage to lower motor neurons: ○ Flaccid Paralysis ○ Hypotonia ○ Paresis/Plegia ○ Hyporeflexia / areflexia - Upper Motor Neuron damage ○ May rise after a stroke or a perinatal hypoxia ○ Spastic Paralysis ○ Paresis / Plegia ○ Hypertonia ○ Hyperreflexia ○ Babinski's sign External Scheme of Spinal Nerve - Rootlets (fila radicularia) ○ Anterior root (radix anterior) ○ Posterior root (radic posterior) § Spinal Ganglion (ganglion sensorium nervi spinalis) - Trunk of Spinal Nerve (truncus nervi spinalis) ○ Posterior Branch (Ramus posterior) ○ Anterior Branch (ramus anterior) ○ Meningeal branch (ramus meningeus) ○ Ganglion of sympathetic trunk (ganglion trunci sympathici) ○ Gray ramus communicans ○ White ramus communicans (ramus communicans albus) Internal Scheme of Spinal Nerve - Somatomotor fibers - Pre-ganglionic sympathetic fibers (Visceromotor fibers) - Post-ganglionic Fibers - Pre-ganglionic parasympathetic fibers - Somatosensory fibers - Viscerosensory fibers (baroreceptors, chemoreceptors, unspecific organ senstation) Posterior Branch: - Suboccipital Nerve (nervus suboccipitalis) C1 - Greater Occipital Nerve (nervus occipitalis major) C2 - Occipital Nerve (nervus occipitalis tertius) C3 - Superior Clunial Nerve (Nervi Clunium Superiores) L1-L3 - Middle Clunial Nerves (Nervi Clunium Medii) S1-S3 Anterior Branch: - Cervical Plexus (Plexus cervicalis) C1-C4 - Brachial Plexus (Plexus brachialis) C4-T1 - Thoracic Nerves (Nervi thoracici) T1-T12 - Lumbar Plexus (Plexus Lumbalis) T12-L4 - Sacral Plexus (Plexus Sacralis) L4-S4 |
| Category | Education |
| Tags | nervous system | spinal nerves | spinal cord | Peripheral Nervous System | what is pns | pns overview | what is spinal nerve | classification of pns | Motor nerves | sensory nerves | upper motor neuron damage | lower motor neuron damage | scheme of spinal nerve | spinal nerve scheme | taim talks med | taimtalksmed | taim | meditay | taim talks emd | ttm | nercous system ttm | nercous system taim | overview pns | pns overviw | pns | pns anatomy | what is pns and cns | central nervous system |
