Trigeminal System.

Slides:



Advertisements
Similar presentations
Ascending tracts and general sensory neuro stuff 
Advertisements

Copyright © 2007 Wolters Kluwer Health | Lippincott Williams & Wilkins Neuroscience: Exploring the Brain, 3e Chapter 12: The Somatic Sensory System.
Somatic Sensation of the Face and Head
No. 26 Sensory Pathways (1).
Long Sensory Pathways (Somatic Sensation) David A. Morton, Ph.D. Thursday January 31 st, Anterolateral System (Pain and Temperature Pathway) - DCML.
Ascending Sensory Pathways
CLOSED MEDULLA (MOTOR DECUSSATION)
CNS Anatomy: Brainstem & Spinal Cord Lecture 6. Mesencephalon n Surrounds cerebral aqueduct n Tectum l Superior Colliculi - vision l Inferior Colliculi.
Xiaoming Zhang Zhejiang University. pons myelencephalon telencephalon diencephalon cerebellum mid-brain pons myelencephalon Brain Stem.
Pons. Pons The base of the pons (basis pontis) contains three components: fiber bundles of the corticospinal tracts, pontine nuclei.
The Trigeminal Nerve Dr. Nimir Dr. Safaa. The Trigeminal Nerve Dr. Nimir Dr. Safaa.
The Somatic Sensory System Chapter 12 Friday, November 7, 2003.
Touch (discriminative sensation) Proprioception (joint position and movement senses) Pain.
Chapter 4 Anatomy of the Nervous System. Structure of the Vertebrate Nervous System Terms used to describe location when referring to the nervous system.
1 Chapter 7 Somatosensory System Chris Rorden University of South Carolina Norman J. Arnold School of Public Health Department of Communication Sciences.
1 Somatic Sensation ( MCB160 Lecture by Mu-ming Poo, Friday March 9, 2007) Introduction –Adrian’s work on sensory coding –Spinal cord and dorsal root ganglia.
The cranial nerves. Central Nervous System - Brain Identify the anatomical location of each major brain area. Describe the functions of the major brain.
Anatomical Substrates of Somatic Sensation
Dermatomes overlap Skin Peripheral nerve Dorsal root Ventral root.
Anatomy of the Central Nervous System
Chapter 12 The Somatic Sensory System. Introduction Somatic Sensation –Enables body to feel, ache, chill –Responsible for touch and pain –Somatic sensory.
CUTANEOUS SENSES Overview of Cutaneous Senses Receptors and Fibers Pathways Gate Control Theory Phantom Limbs.
Somatic Sensory Pathways
Click to Play! Neuro Quiz  Michael McKeough 2008 Identify the correct question The Somatic Sensory System.
Anatomy of the Spinal Cord  Structure of the spinal cord  Tracts of the spinal cord  Spinal cord syndromes Anatomy of the Spinal Cord  Structure of.
Spinal Pathways CD-ROM Case V: Spinal Cord Injury Notes: Chapter 7, p
Part 6 The Sensory Function of CNS. Sensation production Changes of internal and external environment Interoceptor and exteroceptor Sensation conduction.
Bear: Neuroscience: Exploring the Brain 3e
PAIN !!! DENT/OBHS 131 Neuroscience Pain…. Is a submodality of somatosensation Is the perception of unpleasant or aversive stimulation (sensory.
Somatic senses  There are 4 somatosensory modalities  Touch  Temperature  Nociception (pain and itch)  Proprioception.
Practical Neuroanatomy Lecture 4 Christine Hulette MD General Sensation and Review.
Reticular formation. Consists a substantial portion of the dorsal part of the brain stem in which a group of neurons and netlike fibers. The reticular.
IX. cerebrum – 83% of total brain mass
The sensory function of brain
First Term Functions Second Term Functions First Term.
Somatic Sensory System Sensation arising from skin muscle joints Allow you to survive in your environment and make appropriate motor responses.
Pain pathway Y Tang.
Central Nervous System. Lecture Outline Spinal Cord Design & Function Functional Brain Regions –Flow of Information –Learning.
Central nervous system (CNS) Brain + Spinal Cord
Somatic Senses General Sensory System. Sensation Define Stimulus Type Sensory Organ Sensory Receptors Exteroceptors Interoceptors Proprioceptors Receptor.
The Cranial Nerve Nuclei and the Trigeminal System
SOMATIC SENSORY SYSTEM D. C. MIKULECKY PROFESSOR OF PHYSIOLOGY AND FACULTY MENTORING PROGRAM.
Sensation- conscious (perception) or subconscious awareness of changes in environment.
The Anterolateral System Pain and Temperature Transmision.
INTERNAL CAPSULE Reticular Formation.
مسیرهای انتقال حسهای پیکری
Anatomy of the Central Nervous System Lesson 5. Functional Anatomy: CNS n Major Divisions l Forebrain, Midbrain, Hindbrain l Know structure *name, location.
Trigeminal Nerve.
ORGANIZATION OF THE NERVOUS SYSTEM D. C. Mikulecky Professor of Physiology.
IV. Thalamic Afferent/Efferent Connections A.Sensory Thalamus – Somatosensory & gustatory VPM Afferent – Trigeminothalamic fibers (pain, temperature, touch.
Somatosensory Systems
Somatosensory Pathways Lectures Organization of the Course Spinal Cord Brainstem/ Cerebellum Sensory Pathways Cerebrum Motor Pathways Cranial Nerves.
The nervous pathway SHANDONG UNIVERSITY Liu Zhiyu
05. The Trigeminal System Somatic Sensation of the Face and Head David A. Morton, Ph.D. Thursday February 7 th, 2013.
Introduction to Neuroanatomy II: Functional Anatomy.
Brainstem Anatomy. General Organization General organization Sensory cranial nerve nuclei are lateral Sensory cranial nerve nuclei are lateral Motor.
Ascending Sensory System
Structure and Function of the Cerebellum The Cerebellum is a cauliflower-shaped lobe of the brain. Cerebellum means “Little brain” in Latin. The cerebellum.
Somatic Sensory System
Somatosensory Tracts and Maps NBIO 401 – Wednesday October 2, 2013.
Int. Environ. Ext. environ. Sensory N.S.. Sensation. Reaction. Body func. Cont. Sensory N.S.. Sensory receptor. Afferent Nerve. CNS(sensory center)
Brain stem Midbrain D.Nimer D.Rania Gabr D.Safaa D.Elsherbiny.
Anatomy of the Spinal Cord The ascending and descending tracts Anatomy of the Spinal Cord The ascending and descending tracts.
The Trigeminal Nerve Dr. Nimir Dr. Safaa. The Trigeminal Nerve Dr. Nimir Dr. Safaa.
Pain systems Domina Petric, MD.
Mechanosensation Domina Petric, MD.
1° Visual Cortex • Cell-stained section (Nissl) • most 6 cell layers.
Lab 5- ALS, Trigeminal System
Thalamus OBJECTIVES: At the end of this lecture you should understand:
Presentation transcript:

Trigeminal System

Useful animations: Readings: https://www1.columbia.edu/sec/itc/hs/medical/neruoanatomy/neuroanat/ Somatic sensory: A007 Sensory cranial: F003 Sensory cranial: F004 Somatic sensory: AN01 Somatic sensory: A006 Readings: Principles of NS General somatic sensory organization: 447-449 Brain stem/cranial nerve review: 873-880 Sensory nuclei : 880-882, Fig 44-6

Nociceptors, thermoreceptors, & itch receptors are bare nerve endings Mechanoreceptors are encapsulated Bare nerve ending Merkel’s receptor Meissner’s corpuscle Pacinian corpuscle

Dorsal horn Anterolateral system: spino-thal spino-retic spino-mesen

Components of the trigeminal system Spinal nucleus Caudal nucleus Pain/temp/itch Interpolar nucleus Pain/reflexes, etc, ??? Oral nucleus Reflexes, etc, ??? Main sensory nucleus Mechanosensation Mesencephalic nucleus Jaw proprioception Motor nucleus Jaw muscles

Mesencephalic Trigeminal motor Main sensory Spinal trigeminal nuc: oral interpolar caudal

Organization of the spinal trigeminal nucleus: caudal nucleus

3 2 1 Interpolar nucleus 3 Caudal nucleus 2 1 Upper spinal cord Ophthalmic division Maxillary division Mandibular division 7, 9, & 10 3 C2 2 1 C2 Interpolar nucleus 3 Caudal nucleus 2 1 C2 Upper spinal cord

Input: Small-diameter fibers Marginal zone Substantia gelatinosa Spinal trigeminal tract Caudal nucleus Output: Marginal zone-->Thalamus, midbrain Substantia gelatinosa-->interneurons

Spinal trigeminal tract Caudal nucleus Anterolateral system

Main sensory Anterolateral/ trigeminothal Trigeminal motor lemniscus Medial Main sensory Anterolateral/ trigeminothal Trigeminal motor Medial/ trigeminal lemniscus

Mesencephalic Nucleus &tract

Mesencephalic Nucleus &tract

Somatic Sensory Thalamus Medial dorsal Ventral posterior (VMpo) Ventral posterior medial-VPM (trigem) Ventral posterior lateral-VPL (spinal) Touch Pain

Anterolateral and Trigeminal Systems Ventral posterior-->Postcentral gyrus •localization

Anterolateral System Ventral medial post-->Insular •behavioral & •autonomic responses •“Limbic” Amygdala

Anterolateral and Trigeminal Systems Medial dorsal-->Cingulate gyrus •emotional (-valence…) •“Limbic”

Pain suppression path - Limbic cortex Periaqueductal gray matter Raphe nuclei (5-HT) - Caudal nucleus

Trigeminal System Separate components for pain and touch Brain stem nuclei: Caudal nucleus (pain) Interpolar nucleus (caudal part for pain-mouth) Oral nucleus (???) Main sensory nucleus 3 Separate thalamic pain nuclei & 1 for touch: Pain (VPM, VMpo, MD) Touch (VPM) 3 Separate cortical representations: Postcentral gyrus (localization) Insular (important for pain) Cingulate (emotions, esp. for pain) Pain suppression system PAG-->Raphe nuclei (5-HT)-->Caudal nucleus

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2024 SlidePlayer.com. Inc. All rights reserved.