PSY 325 Study Guide - Midterm Guide: Coronary Artery Disease, Aids, Atheroma

• School: University at Buffalo
• Department: Psychology
• Course: PSY 325
• Professor: Daniel Moritz

Document Summary

Sense receptors located on the surface of the body turn physical energy into neural impulses. These neural impulses can travel to the pns toward the spinal cord & brain. Afferent neurons: sensory neurons that relay info from the sense organs toward the brain. Primary afferents: specialized receptors in sense organs that convert physical energy into neural impulses & carry this info to the brain to be processed: myelinated afferent neurons: A-fibers important in pain perception - responsible for fast , prickly pain. C-fibers are unmyelinated afferent neurons - responsible for slower, dull pain. Nocireceptors: receptors in the skin & organs that are capable of responding to various types of stimulation. Spinal cord: pathway for ascending sensory info & descending motor info to & from the brain. The brain: from the spinal cord, the brain receives info from afferent neurons, somatosensory cortex: part of the brain that receives sensory info that allows the entire surface of the skin to be mapped.