USA neuroscience exam 2 QUESTIONS AND CORRECT ANSWERS

USA neuroscience exam 2 QUESTIONS
AND CORRECT ANSWERS
muscle spindle senses: - CORRECT ANSWER proprioception



golgi tendon organ senses: - CORRECT ANSWER proprioception



meissner's corpuscle senses: - CORRECT ANSWER light touch



merkel's receptor senses: - CORRECT ANSWER 2 pt discrimination



Pacinian corpuscle senses: - CORRECT ANSWER deep touch, vibration



ruffini ending senses - CORRECT ANSWER deep touch, vibration



hair receptor senses: - CORRECT ANSWER lighter touch, vibration



bare nerve ending senses: - CORRECT ANSWER pain, warm/cold, itch



A-alpha sensory neuron fiber characteristics - CORRECT ANSWER alternate name: I



larger diameter, myelinated,



includes muscle spindle and GTO


spinocerebellar tract



A-beta sensory neuron fiber characteristics - CORRECT ANSWER Alterate name: II

, smaller than alpha but larger than other 2, myelinated



includes muscle spindle, meissner's corpuslce, merkel's receptor, pacinian corpuslce, ruffini
ending



DCML tract



A-delta sensory neuron fiber characteristics - CORRECT ANSWER alternate name: III



smaller, myelinated


includes bare nerve endings for pain, cool temp, and itch


Anterior lateral spinothalamic tract A pain



C sensory neuron fiber characteristics - CORRECT ANSWER alternate name: IV



smallest, unmyelinated


bare nerve ending for pain, hot temp, itch



anterolateral spinothalamic tract C pain



Functions of thalamus - CORRECT ANSWER Filters incoming info to go to certain
areas of the game



Relay center, integrates and relays sensory info, integrates and relays motor control info from
cerebellum and basal ganglia to motor cortex