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Laboratory 08 Peripheral Nervous System
Laboratory 08 Peripheral Nervous System

... As  you  can  see  from  this  image  above,  the  spinal  cord  is  bisected  into  “mirror-­‐image”  left  and  right   halves  (in  a  similar  fashion  to  the  brain)  by  the  anterior  median  fissure  in  front  and  the   ...
Chapter 13: The Spinal Cord, Spinal Nerves, and Spinal Reflexes
Chapter 13: The Spinal Cord, Spinal Nerves, and Spinal Reflexes

...  Structurally and functionally integrated with brain ...
The Spinal Cord and Spinal Nerve
The Spinal Cord and Spinal Nerve

... 2. Sensory Neuron - has the cell body in the dorsal root ganglion (see diagram above) Passes nerve impulse into the spinal cord through the dorsal root to the posterior horn of the gray matter. 3. Center - region of the spinal cord where the incoming sensory information generates an outgoing motor i ...
Nervous System
Nervous System

... Exceptionally well-organized system  Responsible for coordinating all the many activates performed, both inside and outside, of the body ...
ANATOMY OF THE SPINAL CORD AND SPINAL NERVES
ANATOMY OF THE SPINAL CORD AND SPINAL NERVES

... DIVIDES INTO THE ULNAR NERVE AND MEDIAL HALF OF THE MEDIAN NERVE ULNAR NERVE PASSES POSTERIOR TO THE MEDIAL EPICONDYLE OF THE HUMERUS, SUPPLIES 1/1/2 MUSCLES OF THE ANTERIOR FOREARM AND THE MEDIAL AND DEEP MUSCLES OF THE HAND MEDIAN NERVE SUPPLIES MOST OF THE ANTERIOR FOREARM MUSCLES AND THE LATERAL ...
Gross Anatomy Lecture 1: Spinal Cord and Nerves I. Basic
Gross Anatomy Lecture 1: Spinal Cord and Nerves I. Basic

... 1. Voluntary – sensory info can be evaluated at higher centers such as cortex to formulate conscious (voluntary) motor plan to guide desired response a. Ex picking up glass of water b. Sensory limb  spinal cord cortex spinal cord  motor limb 2. Reflex - rapid involuntary movement in response to ...
•The Spinal Cord and Spinal Nerves
•The Spinal Cord and Spinal Nerves

... (3) Center – region of the spinal cord where the incoming sensory information generates an outgoing motor impulse, usually contains internuncial neurons (4) Motor Neuron transmit nerve impulses to muscle or gland through the ventral root to the spinal nerve (5) Effector the organ (gland or muscle) t ...
Lecture 13 – The brachial plexus
Lecture 13 – The brachial plexus

...  Musculocutaneous nerve (C5 – C7) o Innervates flexor muscles of the arm (specifically those on the ulnar/medial side e.g. flexor digitorum superficialis & profundus)  Median nerve, lateral root Medial cord  Ulnar nerve (C8-T1) o Innervates flexor muscles of forearm (FCU, medial FDP), hypothenar ...
Amber Benton Anatomical Organization of Nervous System Central
Amber Benton Anatomical Organization of Nervous System Central

... Once the spinal nerve has been formed from the dorsal root of the sensory neuron and ventral root of the motor neuron coming together in same “conduit”, it can then be branched off into two primary rami (which are both mixed nerves): Dorsal primary ramus: contains sensory neurons (originating from d ...
Ross Chezem
Ross Chezem

... lead in to the brainstem. From the brainstem he would reach the cerebellum and from the cerebellum he would reach the occipital lobe. After crossing the occipital lobe he would reach the parietal lobe. From the parietal lobe he would enter the frontal lobe and move down to the bottom of the frontal ...
CHA Laboratory Problem Examples
CHA Laboratory Problem Examples

... dorsi. The axillary nerve innervates deltoid and teres minor. The radial nerve innervates the triceps, brachioradialis, wrist extensors, and finger extensors. The supraspinatus is innervated by the suprascapular nerve off the upper trunk and therefore would not be affected by an injury to the poster ...
ANPS 019 Black 11-02-11
ANPS 019 Black 11-02-11

... More gray matter in cervical and lumbar enlargements because more motor neurons to innervate arm and leg More white matter at the cervical level because of all motor axons descending and all sensory axons ascending *C-spine injuries damage motor neurons going down and sensory going up SPINAL CORD SE ...
SESSION 7 - Palm And Hand - Hatzalah of Miami-Dade
SESSION 7 - Palm And Hand - Hatzalah of Miami-Dade

... 10. After the ulnar nerve has supplied the hypothenar muscles it goes on to supply two ………, then all the ………… and finally the ……… ………. Complete the gaps. ...
The Spinal Cord and Spinal Nerves
The Spinal Cord and Spinal Nerves

... muscle in response to stretching of the muscle.  Monosynaptic reflex arc.  Ipsilateral reflex.  This reflex helps avert injury by preventing overstretching of a muscle.  Reciprocal inhibition – when the stretched muscle contracts, the antagonistic muscle(s) relax. ...
Pre-Lecture Questions - Spinal Cord and Spinal Nerves
Pre-Lecture Questions - Spinal Cord and Spinal Nerves

... 9. The spinocerebellar tracts transmit information concerning muscle or tendon stretch to the ____________. ...
C Fiber Stimulation
C Fiber Stimulation

... The majority of nocieptive input to the CNS is carried my C fibers. Somatic C fibers terminate principally within lamina 2 (substania gelatinosa) Visceral noicieptive C fibers from the esophagus, larynx, and trachea travel with the vagus nerve to enter the nucleus solitarious in the brain stem Some ...
Spinal and Cranial Nerves
Spinal and Cranial Nerves

... motor nerve fibers; most nerves General somatic efferent fibers • carry motor impulses from CNS to skeletal muscles ...
Slide 1
Slide 1

... Nerve III and Midbrain ...
Nerve activates contraction
Nerve activates contraction

... Mixed nerves – both sensory and motor fibers Afferent (sensory) nerves – carry impulses toward the CNS Efferent (motor) nerves – carry impulses away from the CNS ...
PNS - General
PNS - General

... Accessory [shoulder and head] XII. Hypoglossal [tongue] severe head injury often damages one or more cranial nerves Spinal Nerves 31 pairs all are mixed nerves all but 1st pass through intervertebral foramina they are named and numbered according to the level of the vertebral column from which they ...
Ch 14: Spinal Cord and Spinal Nerves
Ch 14: Spinal Cord and Spinal Nerves

... posterior white column anterior white column lateral white column anterior white commissure ...
Periph_nerves_reflex..
Periph_nerves_reflex..

... Muscle stretch causes more action potentials to be generated by the “sensors”: the muscle spindles. This causes activation of motor neurons going to that same muscle. This helps a muscle maintain its length relatively constant even when load on it changes quickly. Also, the antagonist muscle is ...
Slide () - AccessAnesthesiology
Slide () - AccessAnesthesiology

... All major branches of the brachial plexus contribute to its innervation. The musculocutaneous nerve (1), through the anterior articular nerve of the elbow that comes out from either the main trunk of the nerve or the nerve to the brachialis muscle.The median nerve (2), through its articular rami (up ...
Mutations in gamma adducin lead to an inherited
Mutations in gamma adducin lead to an inherited

... • Distinct from hereditary spastic paraplegia? ...
Selective dorsal rhizotomy in children: Comparison of
Selective dorsal rhizotomy in children: Comparison of

... arc in the spinal cord and reduces spasticity without causing weakness. Typically between 50% and 70% of dorsal roots were cut at each level of the spinal cord with the exception of the S2 level, where less than 35% of the posterior root was sectioned to avoid bladder dysfunction. More than 200 SDR ...
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Rhizotomy

This article deals with Selective Dorsal Rhizotomy (SDR) rather than the rhizotomy procedures for pain relief; for those procedures, which have begun to take the name ""rhizotomy"" in certain instances, see facet rhizotomy and similar.A rhizotomy (/raɪˈzɒtɵmi/ ry-ZOT-ə-mee) is a term chiefly referring to a neurosurgical procedure that selectively destroys problematic nerve roots in the spinal cord, most often to relieve the symptoms of neuromuscular conditions such as spastic diplegia and other forms of spastic cerebral palsy. The selective dorsal rhizotomy (SDR) for spastic cerebral palsy has been the main use of rhizotomy for neurosurgeons specialising in spastic CP since the 1980s; in this surgery, the spasticity-causing nerves are isolated and then targeted and destroyed. The sensory nerve roots, where spasticity is located, are first separated from the motor ones, and the nerve fibres to be cut are then identified via electromyographic stimulation. The ones producing spasticity are then selectively lesioned with tiny electrical pulses.In spasticity, rhizotomy precisely targets and destroys the damaged nerves that don’t receive gamma amino butyric acid, which is the core problem for people with spastic cerebral palsy. These over-firing, non-GABA-absorbing nerves generate unusual electrical activity during the EMG testing phase in SDR and are thus considered to be the source of the patient's hypertonia; they are eliminated with the electrical pulses once identified, while the remaining nerves and nerve routes carrying the correct messages remain fully intact and untouched. This means that the spasticity is permanently dissolved, and that this is done without affecting nervous system sensitivity or function in other areas, because the only nerves destroyed are the over-firing ones responsible for the muscle tightness.The terms rhizotomy and neurotomy are also increasingly becoming interchangeable in the treatment of chronic back pain from degenerative disc disease. This is a procedure called a facet rhizotomy and is not a surgical procedure but is instead done on an outpatient basis using a simple probe to apply radiofrequency waves to the impinged pain-causing nerve root lying between the facet joint and the vertebral body. Such radio frequency nerve lesioning results in five to eight or more months of pain relief before the nerve regenerates and another round of the procedure needs to be performed. A facet rhizotomy is just one of many different forms of radiofrequency ablation, and its use of the ""rhizotomy"" name should not be confused with the SDR procedure.
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