Extrapyramidal Tracts & Clinical Signs | Rubrospinal, Reticulospinal, Vestibulospinal & Tectospinal

For more cadaveric images and question banks, visit https://bootcamp.com/med-school In this high-yield neuroanatomy video, we dive into the extrapyramidal tracts — descending motor pathways essential for posture, balance, and reflexive movement. Unlike the pyramidal system, these tracts operate automatically to fine-tune motor control. Topics covered: 1. Rubrospinal tract – red nucleus origin, contralateral innervation, upper limb flexor tone 2. Reticulospinal tracts – medial vs lateral roles in regulating extensor and flexor tone 3. Vestibulospinal tracts – posture and antigravity control via vestibular nuclei 4. Tectospinal tract – reflexive coordination of head, eyes, and trunk to sensory input 5. Clinical correlation – extrapyramidal damage and decerebrate rigidity By the end, you’ll clearly understand how the extrapyramidal system integrates sensory and cerebellar input to maintain automatic motor control, balance, and reflexes. ⏱️ Timestamps 0:00 – Intro 0:19 – What are the extrapyramidal tracts? 0:45 – Rubrospinal tract (red nucleus origin, decussation, function) 2:16 – Input from cerebellar nuclei to rubrospinal pathway 2:40 – Function: flexor tone, fine motor control of upper limbs 3:06 – Reticulospinal tracts overview (medial vs lateral) 3:25 – Medial (pontine) reticulospinal tract origin & function 4:16 – Sensory input to medial reticulospinal pathway 4:52 – Function: facilitating extensor tone 5:22 – Lateral (medullary) reticulospinal tract origin & function 6:54 – Cortical & sensory modulation of reticulospinal tracts 7:17 – Vestibulospinal tracts overview (medial vs lateral) 7:48 – Medial vestibulospinal tract (bilateral projections) 8:10 – Lateral vestibulospinal tract (ipsilateral projections) 8:44 – Vestibular input: utricle, saccule, semicircular canals 9:38 – Cerebellar input to vestibular nuclei 9:59 – Function: posture, antigravity muscle tone 10:27 – Clinical correlation: decerebrate rigidity 10:51 – Tectospinal tract origin in superior colliculus 11:18 – Decussation & pathway of tectospinal tract 11:45 – Function: reflexive head, eye & trunk movements to stimuli 12:12 – Wrap-up & conclusion This lesson is especially helpful for medical students, or anyone reviewing for anatomy exams. If it helps you out, give it a like, leave your questions in the comments, and subscribe for more Bootcamp videos. TikTok:   / medschoolbootcamp   INSTAGRAM:   / medschoolbootcamp   #medschoolbootcamp #medicine #Medical #MedStudent #MedicalStudent #MedSchool #MedicalSchool #Doctor #Resident #Hospital #MD #Med #Anatomy #Science #Whitecoat #WhiteCoatCeremony #MS1 #ms2 ______________________________________________________________________ extrapyramidal tracts, rubrospinal tract, reticulospinal tract, vestibulospinal tract, tectospinal tract, descending motor pathways, extrapyramidal vs pyramidal system, motor pathways neuroanatomy, posture and muscle tone, decerebrate rigidity, vestibular nuclei, superior colliculus, motor control tracts, neuroanatomy explained, extrapyramidal functions, high-yield neurology, med school neuro review, extrapyramidal lesions