1016MSC Study Guide - Midterm Guide: Brainstem, Hypoglossal Nerve, Dorsal Root Of Spinal Nerve
27 Jun 2018
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Review Questions and concept checks
PNS
Topic 3.3
Q1. Which region of the spinal column does not have a plexus?!
"Thoracic region!
Q2. What is the main nerve to emerge from the cervical plexus?!
"Phrenic nerve !
Q3. Which structure does it serve (mostly)?!
"does motor to and sensory from the diaphragm (C3 C4 C5, keep the diaphragm
alive)!
Q4. The femoral nerve is responsible for which action?!
"Knee extension!
Q5. The sciatic nerve arises from which plexus?!
"Lumbar plexus!
Q6.#Which cranial nerve arises from the ventral rootlets of the spinal cord and serves two
skeletal muscles in the neck?!
"Accessory nerve (XI)!
Q7.#Listening for vibrations from a tuning fork tests which cranial nerve?!
"Vestibulocochlear !
Q8. #List a motor function and a sensory function of the Trigeminal#Nerve.!
"Chewing!
"Pain, touch, temp !
Topic 3.3 concept check
Nerves are structurally arranged similarly to muscles, with connective tissue coverings
(epi, peri, endo) – instead ending in ‘neurium’!
Peripheral nerves regenerate, axons in the CNS do not!!
Sensory receptors functionally classified regarding type of stimulus they detect!
Mechanoreceptors, thermoreceptors, photoreceptors, chemoreceptors, nociceptors!
Can also be classified based upon body location/structure!
Sensory input is integrated at receptor, circuit and perception levels!
Motor output is integrated at pre-command, projection and segmental levels!
Spinal reflex arcs include 5 components#-#receptor, sensory neuron, integration centre,
efferent neuron, effector organ!
Stretch reflex#-Patellar Tendon reflex = short stretch quadriceps → muscle spindle
activation → #reflex arc → muscle contraction!
Cutaneous reflex-Plantar reflex → infant = +veBabinski; adult = -veBabinski!
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Document Summary
Which structure does it serve (mostly)? alive) does motor to and sensory from the diaphragm (c3 c4 c5, keep the diaphragm. List a motor function and a sensory function of the trigeminal nerve. Nerves are structurally arranged similarly to muscles, with connective tissue coverings (epi, peri, endo) instead ending in neurium". Peripheral nerves regenerate, axons in the cns do not! Sensory receptors functionally classi ed regarding type of stimulus they detect. Can also be classi ed based upon body location/structure. Sensory input is integrated at receptor, circuit and perception levels. Motor output is integrated at pre-command, projection and segmental levels. Spinal re ex arcs include 5 components - receptor, sensory neuron, integration centre, e erent neuron, e ector organ. Stretch re ex -patellar tendon re ex = short stretch quadriceps muscle spindle activation re ex arc muscle contraction. Cutaneous re ex-plantar re ex infant = +vebabinski; adult = -vebabinski. Cranial nerves numbered from anterior to posterior (i-xii)
