NURS113 Study Guide - Midterm Guide: Parietal Lobe, Osteoid, Ground Substance

• School: University of Alberta
• Department: Nursing
• Course: NURS113
• Professor: Alice Khin

Document Summary

Pathophysiology module 2 learning objectives: review the physiology of pns, coding of sensory information and ascending pathways. Efferent: motor pre central gyrus in frontal lobe-> anterior grey horns-> muscles. Afferent: sensory, receptors-> posterior grey horn-> post central gyrus in parietal lobe: somatic (body sense) sensation-> conscious perception. Provides awareness of body sensations (pressure, vibration, temperature, pain, limp position) Sensory receptors= discrete nerve endings: visceral-> unconscious. Incoming pathway for information from internal viscera (organs in body cavities) Co2 concentrations in blood and chemical content of digestive tract: nociceptors: pain receptors that are sensitive to tissue damage or distortion of tissue. Somatosensory pathways: lateral spinothalamic tract (pain and temperature, anterior spinothalamic tract (touch-> crude/vague and pressure, posterior column tract (specific touch vibration pressure) Stimulus strength= frequency-> if not strong enough you won"t feel it. Smaller field is more specific-> posterior column-> parietal lobe. Big is more crude sensations (back and trunk of the body)-> anterior spinothalamic-> parietal lobe.