Neurology | Descending Tracts: Overview скачать в хорошем качестве

Neurology | Descending Tracts: Overview

Official Ninja Nerd Website: https://ninjanerd.org Ninja Nerds! In this lecture, Professor Zach Murphy provides a comprehensive overview of the major descending motor tracts discussed in previous sessions. We revisit the corticospinal tracts, both lateral and anterior, which are responsible for voluntary motor control, particularly fine movements of the distal limbs, and the corticobulbar tract, which governs cranial nerve motor nuclei for facial and head movements. We also review the vestibulospinal tracts, highlighting their role in maintaining balance and posture through extensor muscle activation in response to vestibular input, and the rubrospinal tract, which primarily facilitates flexor muscles of the upper limbs and serves as a supplemental pathway for motor control. The pontine and medullary reticulospinal tracts are contrasted, with the pontine tract exerting excitatory influences on extensor muscles and the medullary tract providing inhibitory modulation to fine-tune posture and movement coordination. By integrating these pathways, we see how the central nervous system coordinates voluntary and involuntary motor activities, postural stability, and reflex modulation. This overview ties together each tract’s unique origin, course, and function, illustrating how they collectively maintain fluid, precise, and adaptable movement patterns essential for daily activities and complex motor tasks. Enjoy the lecture and support us below! 🌐 Official Links Website: https://www.ninjanerd.org Podcast: https://podcast.ninjanerd.org Store: https://merch.ninjanerd.org 📱 Social Media   / ninjanerdlectures     / ninjanerdlectures     / ninjanerdlectures   https://x.com/ninjanerdsci/   / ninja-nerd   💬 Join Our Community Discord:   / discord   #ninjanerd #DescendingTracts #DescendingTractsOverview