PBL: Exam 2 Case Notes Exam Questions And Answers 100% Verified.
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T/F The DCML pathway decussates at the rostral medulla through the internal arcuate fibers; therefore forming the medial leminiscus - correct answer False. The DCML pathway decussates at the *caudal medulla* through the internal arcuate fibers; therefore forming...
PBL: Exam 2 Case Notes
T/F The DCML pathway decussates at the rostral medulla through the internal arcuate fibers; therefore
forming the medial leminiscus - correct answer False. The DCML pathway
decussates at the *caudal medulla* through the internal arcuate fibers; therefore forming the medial
leminiscus
What are the proprioceptive receptors responsible for limb/joint position sense?
(check) - correct answer Type 1 muscle spindle and Golgi tendon organ, and type 2
muscles spindles.
T/F The Meissner corpuscles and merkel discs are responsible for position sense - correct answer
True.
Meissner: glabrous skin
Merkel discs: finger tips+superficial skin
What type of receptors convey the pain and temperature senses?
What is meant by somatotropic organization of the anterolateral (spinothalamic) pathways that convey
pain, temp, and crude touch? - correct answer That the lower limbs are more
laterally represented in the tract while the upper limbs are more medial
*Feet would be the most laterally represented*
,What is sacral sparing? Why does it occur in central cord syndrome? - correct answer
Sacral section for pain and temperature is located on the outside of the spinal cord, and in central cord
syndrome the compression from within the spinal cord thus sparing the sacrum allowing *pain and
temperature to persist in the sacral area*
Where would pain from a meningioma compressing on the T5 spinal level refer pain to?
(Hint: causes a dermatomal pattern of pain where the nerve endings are located)
(Hint: T4 referred pain is at the nipple) - correct answer Pain anteriorly within the
chest
At what level are spinal taps usually performed in adults vs. infant? - correct answer
Adults: L4-L5
Infants: L5/S1
What level of the spinal cord is the cauda equina located at?
(Hint: Level where the spinal cord terminates) - correct answer L2
What layer of brain matter is not punctured by a spinal tap? - correct answer Pia
matter
Where is the CSF located? - correct answer subarachnoid space
What is the tumor that is attached to the dura compressing the brain?
(Hint: May extend to the bone and *psammoma bodies are commonly seen) - correct answer
Meningioma
, Why are meningiomas more common in *women during pregnancy*? - correct answer
Bc meningiomas contain *estrogen*/progesterone receptors
Where does a meningioma arise from? - correct answer Meningothelial cells of the
arachnoid
T/F Meningiomas are extramedullary while arachnoid cysts are intramedullary - correct answer
True
What structure is embryologically formed from the mesenchyme surrounding the neural tube?
(Hint: Forms the membrane called the *primordial meninx*) - correct answer
Arachnoid matter
What does the internal layer of the primordial meninx form? - correct answer Pia
arachnoid which then separates as neural crest cells form the pia mater leaving the arachnoid mater
separated.
What nerve weaknesses are involved with the abnormal articulation of speech? - correct answer
CN V3,
VII
IX
X
XII
V3 is the muscles of mastication
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