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Concept explainers
To discuss:
Spinal gating mechanisms that modify a person’s sense of pain and awareness of body injury.
Introduction:
Structures that are specialized for the detection of a stimulus such as pain and heat are referred to as a sensory receptor. Such receptors can either be real sense organs or simple nerve endings. A sensory receptor converts energy from one form to another. It is involved in the conversion of various forms of stimulus energy, including sound, light, heat, vibration, and touch into nerve signals. Pain indicates the discomfort that typically leads to evasive action. It is caused by noxious stimulation and injury in tissues. The nociceptors indicate the pain receptors that respond to the injuries in tissues and situations that lead to the tissue damage. They occur in the protective tissue called meninges and are responsible for headaches. Nociceptors are tonic receptors since the brain must be aware of the pain all the time.
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Chapter 16 Solutions
Anatomy & Physiology: The Unity of Form and Function
- Which of the following nerves controls movements of the neck? oculomotor vestibulocochlear spinal accessory hypoglossalarrow_forwardd) Identify a passive tissue that could be exposed to continued plastic stress (deformation). Explain the deformation process in relation to the type of stress applied. This is often seen in persons with inactive dynamic spinal stabilizing mechanisms who spend large amounts of time in a static posture.arrow_forwardWeakness or paralysis of the trapezius may be due to damage of cranial nerve(s) which ones?arrow_forward
- Which is a symptom of upper motor neuron lesion Absence of all tendon reflexes Flaccid paralysis Presence is fasciculations Abnormal plantar reflexarrow_forwardComplete transection of the spinal cord produces all of the following effects, except :-a- permanent loss of all sensations mediated by the cord below level of lesionb- permanent loss of voluntary movements by muscles innervated by the cord below level of lesionc- permanent loss of reflexes mediated by the cord below level of lesiond- temporary loss of micturition reflexesarrow_forwardA lower motor lesion involving CNV will result in: Ipsilateral lower facial paralysis Contralateral lower facial paralysis A and B None of the abovearrow_forward
- explain spinal damage in terms of the function of the autonomic nervous systemarrow_forwardDeep pain shows the following characteristics, except :-a- dull achingb- throbbingc- evokes flexor reflexesd- diffusearrow_forwardFollowing a fracture of cervical vertebra a patient exhibit spastic paralysis on the right upper and lower extremities loss of pain and temperature sensation in the left upper and lower extremities and normal vibration sensors in all extremities. The spinal cord injury most likely involves which of the following?arrow_forward
- Loss of sensation to the thumb is indicative of injury to which nerve? median Oaxillary ulnar musculocutaneous.arrow_forwardThe spinal pain gate is :-a- Ligand controlledb- voltage controlledc- opened by enkephalind- closed by substance Parrow_forwardCorrectly identify and label the structures associated with this spinal plexus. Posterior root of ansa cervicalis Transverse cervical nerve Great auricular nerve Phrenic nerve Hypoglossal nerve Supraclavicular nerves C1 C2 C3 C4 C5 Ulnar nerve Long thoracic nerve Anterior root of ansa cervicalis Lesser occipital nerve Zoom Resetarrow_forward
- Surgical Tech For Surgical Tech Pos CareHealth & NutritionISBN:9781337648868Author:AssociationPublisher:CengageAnatomy & PhysiologyBiologyISBN:9781938168130Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark WomblePublisher:OpenStax College
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