Somatosens - Study guides, Class notes & Summaries

NUR 4125: Chapter 14 Somatosensory Function, Pain, and Temperature Questions With Complete SOLUTIONS

CNIM Highlighted 4 Somatosensory evoked potential monitoring during scoliosis surgery may replace the need for the: A- Removal of hardware B- Ruben hematocrit test C- Stagnara wake-up test D- O'Hara clonus test - answer-C- Stagnara wake-up test Somatosensory evoked potentials are less reliable in patients with: A- A tethered spinal cord B- Severe scoliosis C- Neuromuscular disease D- History of nicotine abuse - answer-C- Neuromuscular disease Monitoring somatosensory function may fa...

Merkell cells - ~~> - slowly adapting - 25% of mechanosensory afferents in hand - highest spatial resolution - edges, points, corners, curvature - static indentation ** Meissener - ~~> - rapidly adapting -40% of mechanosensory innervation in hand - skin motion, indentation, low frequency vibrations for textured objects*** - more than 4x more sensitive than Merkell to skin deformation, but larger receptive fields so less spatial resolution - ie. tea set plate etchin...

dermatome - ~~> the area of skin supplied by the sensory axons of a single spinal nerve dorsal horn - ~~> the POSTERIOR column of grey matter in the spinal cord (shape differs depending on spinal segment) - contains SENSORY neuron cell bodies ventral horn - ~~> the ANTERIOR column of grey matter in the spinal cord (shape differs depending on spinal segment) - contains MOTOR neuron cell bodies 3 types of primary somatosensory afferent axons - ~~> 1) Aβ 2) Aδ 3...

RAPID-adapting mechanoreceptors - ️️Meissner and Pacinian (dynamic phase QUICKLY becomes static phase) dorsal root ganglion (DRG) - ️️(part of the PNS) cluster of cell bodies in the dorsal root of a spinal nerve (when the action potential reaches the DRG, it splits into 2 - one travels toward the cell body and the other continues down the axon) dorsal horn - ️️the POSTERIOR column of grey matter in the spinal cord (shape differs depending on spinal segment) - contains SENSORY n...

NR 412 Exam 2 (Acid/Base, Pulmonary, Somatosensory) Questions With Complete Solutions

DCML - 1) mechanosensory receptors send info to fibers in gracile & cuneate pathways 2) fibers travel to caudal medulla, synapse at dorsal column nucleus (and switch sides) 3) exit DCN as arcuate fibers, cross the midline to form medial lemniscus carries through pons, midbrain, brainstem 4) synapse at thalamus (VPL) 5) internal capsule takes axons to post-central gyrus/S1, some to S2. Meissener - - rapidly adapting -40% of mechanosensory innervation in hand - skin motion, indentation, lo...

NUR 529 - Exam 1 (Somatosensory Function, Pain, Headache, Temperature Regulation) Questions And Revised Correct Answers | Already Passed what does somatosensory component of NS do? - Answer -provides the CNS an awareness of body sensations such as touch, temperature, body position, and pain sensory neuron types (3) - Answer -general somatic afferent neurons special somatic afferent neurons general visceral afferent neurons general somatic afferent neurons - Answer -have branches with ...

Evoked Potentials - Answer The electrical response of the nervous system to external stimulation 2 Types of EPs - Answer 1. Sensory: Stimulus is delivered peripherally (ear, leg, arm, etc.), and the resulting response is recorded centrally (the cortex) 2. Motor: stimulus is delivered centrally (cortex, spinal cord) and the resulting response is recorded peripherally (at a peripheral nerve or muscle) Depending on the stim modality, sensory EPs are divided into - Answer -Somatosenso...

Guideline 11B: RECOMMENDED STANDARDS FOR INTRAOPERATIVE MONITORING OF SOMATOSENSORY EVOKED POTENTIALS Stimulus and Safety: A constant current stimulator is recommended for use in the operating room. Care should be exercised to prevent blood or other fluid from contaminating the stimulating site. Either standard disk electroencephalography (EEG) electrodes or sterile subdermal needle electrodes may be used. Disk EEG electrodes should be applied to the scalp with collodion and ...