ANATOMY
33
Central Nervous System – Cord and tracts
13.
Transection of anterolateral spinal cord results in…
(phys notes and lasts)
a.
ipsilateral weakness, hyperreflexia hypertonia
T - Ipsi weakness since corticospinal tracts decussate in medullary pyramids
b.
Ipsilateral loss of pain
F - contralateral because spinothalamic tract decussate in
spinal cord immediately
c.
Ipsilateral loss of temperature
F - since spinothalimic columns decussate immed in the spinal cord
d.
Contralateral loss of vibration
F - because dorsal columns decussate by synapsing in the gracile and
cuneate nuclei
14.
Considering a complete spinal transection:
a.
C1-C3 – quadriplegia and no respiration
T
b.
T10-L1 – loss of thigh movements
T - since they are below it
c.
L2-L3 – loss of most of the leg movements
T - Yes Fuuuck
Yes, this question was as ambiguous as you’re thinking
15.
The posterior columns transmit which of the following?
Lasts p 482, 484
a.
tendon stretch, vibration
T
b.
afferent pain and temperature
F – spinothalamic
c.
afferent tendon stretch impulses
T
d.
motor tracts
F - corticospinal
16.
Which of the following are not involved in the control of
posture and movement
a.
Tractus solitaries
T - It is involved in sending impulses from chemo and stretch receptors
b.
Lateral reticulospinal tract
F - Extra pymramidal
c.
Medial reticulospinal tract
F – exrapyramidal
d.
Vestibulospinal tract
F - extrapyramidal
e.
Spinocerebellar tracts
F - Cerebellum therefore posture
17.
Identify the layers pierced when performing a lumbar puncture
in the correct order
•
Skin
•
Superficial then deep fascia
•
Supraspinous lig
•
Interspinous lig
•
Lig Flavum
•
(Extradural space)
•
Dura
•
(Subdural space)
•
Arachnoid mata
•
Subarachnoid space/lumbar cistern – CSF
