Anatomy and Cell Biology 3319 Lecture Notes - Lecture 10: Insular Cortex, Cerebellar Vermis, Cerebellar Peduncle

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sangriapanda814

13 Oct 2016

School

Western University

Department

Anatomy and Cell Biology

Course

Anatomy and Cell Biology 3319

Professor

Peter Merrifield

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Document Summary

Name and describe the pathways for transmission of sensory information from the periphery to the termination in the spinal cord and brain. Three main ascending pathways: dorsal column/medial lemniscus sensory system, spinothalamic and spinoreticular pathways, spinocerebellar pathways. Main sensory pathway transmitting information about discriminative touch, pressure, vibratory sensation, and conscious joint position (i. e. conscious proprioception) from periphery to the somatosensory cortex: tactile, conscious sensory information. **note that neurons within this pathway do not synapse at the level of the spinal cord (excluding those involved in reflexes) Sensory information from the lower/upper body synapse within the medulla at gracile and cuneate nuclei, respectively. Somatosensory cortex is plastic; proportion of cortex devoted to certain digits is dependent on how much those digits are used neuroplasticity can be changed. Discriminative touch, pressure, vibratory sensation, and conscious joint position enter the dorsal aspect of the spinal cord.

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1.All peripheral sensory input enters the spinal cord through the 2.Mechanoreceptor afferents are divided into two main classes based on(Points : 2) 3.Branches of SAI afferents terminate in ____________ where they are proposed to be the site of ____________ transduction.(Points : 2) 4.SAI afferents appear to be used by the CNS to perceive(Points : 2) 5.AII afferents have ________ receptive fields and greater sensitivity to ________ than do SAI afferents.(Points : 2) 6.Somatosensory afferents from the muscle are sensitive to ___________ while afferents from the tendon are sensitive to ___________.(Points : 2) 7.Kinesthesia is obtained by convergent afferents of the muscles, tendons, joints and___________8.Nociceptors respond to ________ stimuli and sense through use of ___________.(Points : 2) 9.First pain is transmitted through ______ receptors that carry discriminative information, and second pain is modulated by _______ receptors.(Points : 2) 10.Acute skin damage is accompanied by ____________ that is the result of local activation of nociceptors leading to ________.(Points : 2) 11.Somatic sensation retains separation of mechanosensation and __________ from nociception and ___________ which is evident from PNS to CNS.(Points : 2)12.The primary somatosensory cortex has ventral projections to(Points : 2) 13.The dorsal stream of the somatosensory cortex project to(Points : 2) 14.The dorsal column nuclei are located(Points : 2) 15.The lateral cervical nucleus is located in the ____________ and display ___________ receptive fields.(Points : 2) 16.Non-perceptual input of nociceptors influence behavior by(Points : 2)17. sensory trigeminal system is composed of the...18.The receptive fields of secondary somatosensory cortical neurons are ___________ than those of the primary somatosensory cortex.(Points : 2) 19.Receptive fields in the primary somatosensory cortex are(Points : 2)I really need help with this please! The person who is able to help me with the CORRECT answers will be compensated with 3000 points! This assignment will be graded instantly by a computer so I will know if the person actually tried or if they just put in some crazy answers just to get the points. The points will be rewarded IMMEDIATELY after the assignment is graded, which, as I stated above is done instantly by the computer once submitted. At least 75 to 80% of the questions must be correct in order to receice all 3000 points today. Thank you SO much in advance!!! :)

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Anatomy and Cell Biology 3319 Lecture Notes - Lecture 10: Insular Cortex, Cerebellar Vermis, Cerebellar Peduncle

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