CRANIAL NERVE NUCLEI - LECTURE A NBIO 401 – Wednesday, October 3, 2012.

Slides:

Advertisements

Similar presentations

Neuroanatomy of Cranial Nerves

Advertisements

Peripheral Nervous System

David A. Morton, Ph.D. Jan 10th, 2013

Cranial Nerves.

CLOSED MEDULLA (MOTOR DECUSSATION)

Learn the name and numerical designation of each of the twelve

Brainstem II Medical Neuroscience Dr. Wiegand. Internal Brainstem Cranial nerve nuclei Location of selected tracts Reticular formation.

Xiaoming Zhang Zhejiang University. pons myelencephalon telencephalon diencephalon cerebellum mid-brain pons myelencephalon Brain Stem.

Brainstem and Cranial Nerves – 1 Human Neurobiology ANHB 2217 Avinash Bharadwaj Semester 1, 2006 Week 2.

Cranial nerves and their nuclei

Pons. Pons The base of the pons (basis pontis) contains three components: fiber bundles of the corticospinal tracts, pontine nuclei.

CRANIAL NERVES - LECTURE B

Senses General - located throughout body Special – localized to specific organs.

Summary of Function of Cranial Nerves

MEDULLA OBLONGATA INTERNAL FEATURES.

1 Nervous System Subdivisions : Peripheral Nervous System Cranial nerves arising from the brain Somatic fibers connecting to the skin and skeletal.

Practical Neuroanatomy Lecture 3 Christine Hulette MD Cranial Nerves Auditory System Visual System Olfactory and Limbic System Hypothalamus Reticular System.

Motor Functions of the Cranial Nerves I (Somatic Motor Functions)

EXERCISE 19: BRAIN AND CRANIAL NERVES

CRANIAL NERVES I, II, IV, VI, VIII, XI, XII.

* Compare and Contrast cranial nerves to spinal nerves * Know which cranial nerves are central and which are peripheral * Know the 4 functions of all.

Angelina, Eden, Titus, Joey, Gabe. Ana

Cranial Nerves Clinical Assessment The “FACE” of Cranial Nerves.

Cranial nerves. Names of cranial nerves Ⅰ Olfactory nerve Ⅱ Optic nerve Ⅲ Oculomotor nerve Ⅳ Trochlear nerve Ⅴ Trigeminal nerve Ⅵ Abducent nerve Ⅶ Facial.

Cranial Nerves.

SHANDONG UNIVERSITY Liu Zhiyu

Spinal Tracts & Brain Stem Revision

Brain stem & Cerebellum. The brain Telencephalon Diencephalon Cerebellum Brain stem.

1. By the end of the lecture, students will be able to :  Distinguish the internal structure of the components of the brain stem in different levels.

1. By the end of the lecture, students will be able to :  Distinguish the internal structure of the components of the brain stem in different levels.

Anatomy of the Brain Stem

The Nervous pathway 山东大学医学院解剖教研室李振华.

Brainstem and Cranial Nerves – 2 Human Neurobiology ANHB 2217 Avinash Bharadwaj Semester 1, 2006 Week 2.

Chapter 14: The Brain and Cranial Nerves

Peripheral Nervous System Includes: 1.Cranial nerves 2.Spinal nerves Can also be divided into: 1.Somatic nervous system – controls conscious activities.

INTERNAL STRUCTURE OF THE BRAIN STEM By Dr. Sanaa Alshaarawy

Central and Peripheral Nerves. Spinal Cord Gray Matter White Matter.

Review of The Cranial Nerves

Copyright © 2005 Pearson Education, Inc., publishing as Benjamin Cummings Classification of cranial nerves Sensory cranial nerves: contain only afferent.

Dr. Mujahid Khan. Pons  The pons may be divided into ventral or basal portion and a dorsal portion, also known as tegmentum  The ventral portion is.

FUNCTIONAL COMPONENTS AND ORGANIZATION OF SPINAL CORD AND BRAINSTEM

Peripheral Nervous System

How can you see in your eyes ? Of the end of this lecture you will be able to answer this question. Nerve supply (chapter 11)

BRAIN. BRAIN STEM Medulla Oblongata Pons Midbrain.

Diencephalon Figure

Brainstem Anatomy. General Organization General organization Sensory cranial nerve nuclei are lateral Sensory cranial nerve nuclei are lateral Motor.

CRANIAL NERVES HAPS-I Course Special Project JULIANN GARZA, PA-C, MS UNIVERSITY OF TEXAS-PAN AMERICAN.

LECTURE NO 12 THE BRAINSTEM MEDULLA OBLONGATA ANATOMY IV (Neuroanatomy)

Somatosensory Tracts and Maps NBIO 401 – Wednesday October 2, 2013.

Cranial Nerves. IIIrd Nerve 3 Oculomotor Oculomotor nucleus (motoneurons for eye muscles) Oculomotor nerve (to eye muscles & pupil muscles) Edinger.

Functional Components GSE: III, IV, VI, XII GVE (parasympathetic): III, VII, IX, X GVA: VII, IX, X GSA: V, VII, IX, X SVE: V, VII, IX, X, XI SVA: I, VII,

Regions of the Brain  Cerebral hemispheres  Diencephalon  Cerebellum  Brain stem روند تکامل و تقسیم بندی سیستم عصبی.

Ch. 13 Anatomy of the Nervous System … PERIPHERAL N.S.

Cranial and spinal nerves

Brainstem Domina Petric, MD NOTE:

THE NERVOUS SYSTEM 4. Right vs. Left Hemisphere

Medical Neuroscience Dr. Wiegand

Nerves and Their Parts Nerve- cordlike organ part of PNS

Peripheral Nerves Notes

Cranial Nerves.

Localisation of the brainstem nuclei: the open book concept

General Sensory Pathways of the Face Area, Taste Pathways

Regions of the Brain Cerebral hemispheres Diencephalon Brain stem

The Cranial Nerves.

The Cranial Nerves.

BRAIN STEM AND CRANIAL NERVES

Presentation transcript:

CRANIAL NERVE NUCLEI - LECTURE A NBIO 401 – Wednesday, October 3, 2012

Objective for the first two cranial nerve lectures, those about cranial nerve nuclei: -Be able to summarize the function and location of each cranial nerve nucleus.

Cranial Nerve Nuclei Introductory Organization

V VI VII VIII IX X XII III I Optic Nerve II

V VI VII VIII IX X XII III I Optic Nerve II ONLY III - XII

V VI VII VIII IX X XII III I Optic Nerve II CRANIAL NERVE NUCLEI A = III - V

V VI VII VIII IX X XII III I Optic Nerve II CRANIAL NERVE NUCLEI B = VI - XII

Mesencephalic Trigeminal V (jaw muscle spindles) Main Sensory Trigeminal V (face touch & proprioception) Spinal Trigeminal V (face pain) Vestibular/ Cochlear VIII (vestibular & auditory signals from the inner ear) Oculomotor III (eye muscles) Trochlear IV (eye muscles) Abducens VI (eye muscles) Hypoglossal XII (tongue muscles) Sensory GSA and SSA Motor GSE GENERAL SOMATIC CRANIAL NERVE NUCLEI

Solitarius (caudal half) VII, IX, X (sensory information for autonomic control) Edinger-Westphal III (constricts pupil - parasympathetic) Superior salivatory VII (drives salivary glands - parasympathetic) Inferior salivatory IX (drives salivary glands - parasympathetic) Dorsal motor n. of X (parasympathetic drive to smooth muscles & organs in chest and abdomen) Sensory GVA Motor GVE GENERAL VISCERAL CRANIAL NERVE NUCLEI

Solitarius (rostral half) VII, IX, X (taste) Motor Trigeminal V (chewing muscles) Facial VII (muscles of facial expression) n. Ambiguus IX, X (muscles of the pharynx & larynx) Sensory SVA Motor SVE SPECIAL VISCERAL CRANIAL NERVE NUCLEI

sulcus limitans (divides motor nuclei [medial] and sensory nuclei (lateral]).

sulcus limitans (divides motor nuclei [medial] and sensory nuclei (lateral]).

sulcus limitans

Motor nuclei locations

General Somatic Efferents lie close to the midline

General Visceral Efferents lay laterally to the General Somatic Efferents

Cranial Nerve Nuclei III-V The Oculomotor (IIIrd) Nucleus

Oculomotor nucleus (motoneurons for eye muscles) Oculomotor nerve (to eye muscles & pupil muscles) Edinger Westphal nucleus (constricts the pupil)

General Somatic Efferents lie close to the midline

Mesencephalic Trigeminal V (jaw muscle spindles) Main Sensory Trigeminal V (face touch & proprioception) Spinal Trigeminal V (face pain) Vestibular/ Cochlear VIII (vestibular & auditory signals from the inner ear) Oculomotor III (eye muscles) Trochlear IV (eye muscles) Abducens VI (eye muscles) Hypoglossal XII (tongue muscles) Sensory GSA and SSA Motor GSE GENERAL SOMATIC CRANIAL NERVE NUCLEI

Cranial Nerve Nuclei The Trochlear (IVth) Nucleus

Trochlear nerve (to eye muscles) Trochlear nucleus (motoneurons for eye muscles)

General Somatic Efferents lie close to the midline

Mesencephalic Trigeminal V (jaw muscle spindles) Main Sensory Trigeminal V (face touch & proprioception) Spinal Trigeminal V (face pain) Vestibular/ Cochlear VIII (vestibular & auditory signals from the inner ear) Oculomotor III (eye muscles) Trochlear IV (eye muscles) Abducens VI (eye muscles) Hypoglossal XII (tongue muscles) Sensory GSA and SSA Motor GSE GENERAL SOMATIC CRANIAL NERVE NUCLEI

Cranial Nerve Nuclei III-V The Trigeminal Nuclei

Sensory Axons signals for conscious touch & muscle spindle/joint receptors (cell body in ganglion outside CNS) Sensory Axons of 1° sensory neuron for unconscious muscle spindle & joint receptors (cell body in mesencephalic trigeminal nucleus - the only 1° sensory cell body inside CNS) To Thalamus Sensory Axons signals for pain & temperature (cell body in ganglion outside CNS) Motor Axons carrying motor signals to jaw muscles (cell body motor trigeminal nucleus) Trigeminal nerve (sensory & motor axons of 4 types listed to the right) Mesencephalic trigeminal nucleus (1° sensory neurons for muscle spindles & joint receptors in head) Mesencephalic trigeminal tract (axons bringing unconscious signals from muscle spindles & joints in head)

Main sensory trigeminal nucleus Trigeminal nerve Spinal trigeminal nucleus Motor trigeminal nucleus Spinal trigeminal nucleus (pain & temperature from head) Motor trigeminal nucleus (motoneurons for jaw muscles) Main sensory trigeminal nucleus (touch, conscious spindle & joint from head) Trigeminal nerve (afferent: touch, muscle spindle/joint, pain & temperature from head efferent: chewing muscles)

Main sensory trigeminal nucleus (left) Motor Trigeminal Nucleus (right) Mesencephalic trigeminal tract (left) Mesencephalic trigeminal nucleus (left) Spinal trigeminal nerve (left) (1° axons on way to terminate in spinal trigeminal nucleus) Main sensory trigeminal nucleus (right) Spinal Trigeminal Nucleus (right) Trigeminal Nerve (left) Trigeminal Nerve (right) Spinal trigeminal nucleus (left)

Special Visceral (Branchial) Efferents lie most lateral of the motor nuclei.

Solitarius (rostral half) VII, IX, X (taste) Motor Trigeminal V (chewing muscles) Facial VII (muscles of facial expression) n. Ambiguus IX, X (muscles of the pharynx & larynx) Sensory SVA Motor SVE SPECIAL VISCERAL CRANIAL NERVE NUCLEI

Medial lemniscus Spinothalamic tract Pyramidal Tract Medial Longitudinal Fasciculus Pontine Gray matter Superior Cerebellar peduncle Mesencephalic trigeminal tract & nucleus ROSTRAL PONS

Medial lemniscus Spinothalamic tract Pyramidal Tract Middle Cerebellar peduncle MLF Pontine Gray matter Motor trigeminal nucleus Superior cerebellar peduncle Trigeminal nerve ( sensory & motor for the head) Mesencephalic trigeminal tract & nucleus (muscle spindles from chewing muscles & jaw joint receptors) MID PONS

Medial lemniscus Spinothalamic tract Pyramidal Tract Middle Cerebellar peduncle MLF Pontine Gray matter Superior cerebellar peduncle (fibers coming out of cerebellum) Main sensory trigeminal Nucleus (face touch) Motor nucleus of trigeminal (chewing muscle motoneurons) Spinal trigeminal tract & nucleus MID PONS

Medial lemniscus Spinothalamic Tract Pyramidal Tract Spinal trigeminal nucleus & tract Abducens Nucleus (eye muscle motoneurons) Vestibular nuclei Middle Cerebellar peduncle MLF Pontine Gray matter Inferior cerebellar peduncle Facial nerve fibers (looping around abducens nucleus) Facial motor nucleus CAUDAL PONS

Cuneate Fasciculus (touch-arm) Pyramidal Decussation (corticospinal fibers crossing midline) Spinothalamic Tract (body pain) Spinocerebellar Tract (sensory fibers - Muscle spindle & joint information to cerebellum - leg) Pyramids (corticospinal fibers) Spinal trigeminal nucleus & tract (head pain & temp) Cuneate Nucleus (touch-arm) Gracile Nucleus (touch-leg) Gracile Fasciculus (touch-leg) Central canal Medial Longitudinal Fasciculus (MLF) (vestibular & oculomotor information) Spinal Accessory Nucleus (motoneurons for trapezius & sternocleidomastoid muscles)

Fini