Spinal Cord Touro Neuroscience Quiz
Quiz for the spinal cord for Touro Neuroscience course
- 1.The spinal cord extends from the foramen magnum to _________________.
- A.
T11-T12
- B.
L1-L2
- C.
S1-S2
- D.
L4-L5
- 2.The cervical enlargement is located between___________ and is enlarged due to the _______________.
- A.
C1-C4, cervical plexus for head and neck region making the dorsal gray matter bigger.
- B.
C1-C4, brachial plexus for upper limbs making the dorsal gray matter bigger
- C.
C4-T1, brachial plexus for upper limbs making the dorsal gray matter bigger
- D.
C4-T1, brachial plexus for respiratory function making the dorsal gray matter bigger
- 3.The anterior spinal artery branches are located in the ____________.
- A.
Anterior medial fissure
- B.
Anterolateral tract
- C.
Anterolateral sulcus
- D.
Anterior medial sulcus
- 4.In the upper thoracic and cervical spinal cord, the posterior intermediate sulcus divides the ____________.
- A.
Anterolateral tract from dorsal columns
- B.
Dorsal columns
- C.
Anterolateral tract from the corticospinal tract
- D.
Corticospinal tract
- 5.There are ________ pairs of spinal nerves and the region that has one more than it's number of vertebrae is the _________.
- 6.Spinal nerve T7 emerges between T6 and T7.
- A.
True
- B.
False
- 7.GSA, somatic sensory fibers, transmit information from _______________.
- A.
Receptors for hearing and vision
- B.
Mechanoreceptors and nociceptors
- C.
Receptors in skin, muscle, tendons, and joints
- D.
Receptors in smooth muscle, cardiac muscle and glands
- 8.Local anesthetic drugs are injected into this space to anesthetize the lumbar and sacral spinal nerves during operative procedures and for postoperative pain control
- A.
Sub-pia mater
- B.
Subarachnoid
- C.
Subdural
- D.
Epidural
- 9.The spinal cord is stabilized by these structures:
- A.
Denticulate ligaments
- B.
Collagen fibers of subarachnoid space
- C.
Filum terminale
- 10.The filum internim is a continuation of a pial thread that caudally pierces the thecal sac to become surrounded by dura and attach to the coccyx.
- A.
True
- B.
False
- 11.The dorsal horn contains laminae:
- A.
VII
- B.
I-VI
- C.
X
- D.
VIII & IX
- 12.Lamina ____________ recieves descending motor pathways and proprioceptive input from the periphery and is located in the _________.
- A.
VI, ventral horn
- B.
VI, dorsal horn
- C.
VII, intermediate zone
- D.
VII, central canal
- 13.The _________of Clarke (Clarke’s column) is found in the dorsal medial part of lamina VII at spinal segments _______. The nucleus receives proprioceptive input from muscle and sends axonal projections to the ipsilateral cerebellum (dorsal spinocerebellar tract).
- A.
Posteromarginal nucleus, C8-L2
- B.
Substantia gelatinosa, T4-L2
- C.
Nucleus dorsalis, C8-L2
- D.
Interomediolateral cell column, T1-L2
- 14.The ____________nucleus is located in spinal segments C3-C5.
- A.
Somatic motor
- B.
Phrenic
- C.
Nucleus dorsalis
- D.
Cervical autonomic
- 15.Nuclei in the ventral horn are somaticotopically arranged so that the flexors are dorsally located and the extensors are ventrally located.
- A.
True
- B.
False
- 16.The crossed extensor reflex refers to
- A.
Signal crosses through the dorsal horn to directly stimulate the withdrawl from nocioceptive stimulis by activating extensors and inhibiting flexors in ipsolateral leg.
- B.
Signal transversing the midline and activation of extensors contralaterally to support the body on the opposite leg.
- C.
The nocioceptive signal synapses on the contralateral side and so the withdrawl signal must cross the midline to activate the extensors and inhibit the flexors in the correct leg
- D.
Motor pathways cross in the intrafusal muscles while delivering withdrawl signal to extensors.
- 17.The myotactic reflex stimulates ____________ muscles and inhibits ___________ muscles from the tapped tendon.
- A.
Contralateral, ipsolateral
- B.
Opposite, same
- C.
Intrafusal muscles, extrafusal muscles
- D.
Same, opposite
- 18.The corticospinal tract conveys______________.
- A.
Discriminative touch, vibration, joint position
- B.
Sensory from the upper extremities
- C.
Skilled, volitional movement
- D.
Crude touch, pain, temperature
- 19.Spinocerebellar tract motor information is under conscious control.
- A.
True
- B.
False
- 20.If you took an axial CT scan at the level of S3, would you be able to visualize the cuneatus tract?
- A.
No, because the spinal cord white matter does not descend as far as S3
- B.
No, because this white matter tract is only above T6 as it has signals from upper extremities
- C.
Yes, because it is continuous through the entire spinal cord
- D.
Yes, because this white matter has fibers that convey information from the lower extremities
- 21.Internal arcuate fibers of the dorsal column tract decussation in the ____________.
- A.
Thalamus
- B.
Medulla
- C.
Midbrain
- D.
Immediately in the spinal cord segment
- 22.Which tract has a lesion if coordination problems begin to occur?
- A.
Spinocerebellar
- B.
Corticospinal
- C.
Dorsal column
- D.
Anterolateral system
- 23.All of the fibers in the coricospinal tract decussate in the medulla.
- A.
True
- B.
False
- 24.The rubrospinal tract is the minor descending motor pathway for the _______________.
- A.
Lower limbs
- B.
Respiratory muscles
- C.
Upper limbs
- D.
Intrinsic back muscles
- 25.Reticulospinal tract is responsible for_______________________
- A.
Excitatory to extensor (antigravity) musculature and act to maintain body posture and orientation in space
- B.
Unconscious coordination signals
- C.
Flex arms and forearms
- D.
Extensor muscle posture and tone
Questions: 26 | Attempts: 3910 | Last updated: Mar 22, 2022
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