The cervical enlargement is located between___________ and is enlarged due to the _______________.

C4-T1, brachial plexus for upper limbs making the dorsal gray matter bigger

C1-C4, cervical plexus for head and neck region making the dorsal gray matter bigger.

C1-C4, brachial plexus for upper limbs making the dorsal gray matter bigger

C4-T1, brachial plexus for upper limbs making the dorsal gray matter bigger

C4-T1, brachial plexus for respiratory function making the dorsal gray matter bigger

In the upper thoracic and cervical spinal cord, the posterior intermediate sulcus divides the ____________.

anterolateral tract from dorsal columns

anterolateral tract from the corticospinal tract

There are ________ pairs of spinal nerves and the region that has one more than it's number of vertebrae is the _________.

31 pairs, cervical spinal nerves have 8 pairs and only 7 associated vertebrae

GSA, somatic sensory fibers, transmit information from _______________.

receptors in skin, muscle, tendons, and joints

receptors for hearing and vision

mechanoreceptors and nociceptors

receptors in skin, muscle, tendons, and joints

receptors in smooth muscle, cardiac muscle and glands

The spinal cord is stabilized by these structures:

collagen fibers of subarachnoid space

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).

interomediolateral cell column, T1-L2

The crossed extensor reflex refers to

signal transversing the midline and activation of extensors contralaterally to support the body on the opposite leg.

signal crosses through the dorsal horn to directly stimulate the withdrawl from nocioceptive stimulis by activating extensors and inhibiting flexors in ipsolateral leg.

signal transversing the midline and activation of extensors contralaterally to support the body on the opposite leg.

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

motor pathways cross in the intrafusal muscles while delivering withdrawl signal to extensors.

The myotactic reflex stimulates ____________ muscles and inhibits ___________ muscles from the tapped tendon.

intrafusal muscles, extrafusal muscles

The corticospinal tract conveys______________.

discriminative touch, vibration, joint position

sensory from the upper extremities

If you took an axial CT scan at the level of S3, would you be able to visualize the cuneatus tract?

No, because this white matter tract is only above T6 as it has signals from upper extremities

No, because the spinal cord white matter does not descend as far as S3

No, because this white matter tract is only above T6 as it has signals from upper extremities

Yes, because it is continuous through the entire spinal cord

Yes, because this white matter has fibers that convey information from the lower extremities

Internal arcuate fibers of the dorsal column tract decussation in the ____________.

immediately in the spinal cord segment

Reticulospinal tract is responsible for_______________________

extensor muscle posture and tone

excitatory to extensor (antigravity) musculature and act to maintain body posture and orientation in space

unconscious coordination signals

extensor muscle posture and tone

Spinal Cord Touro Neuroscience Quiz

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Quizzes Created: 1 | Total Attempts: 375

Questions: 25 | Attempts: 375 | Updated: Mar 21, 2023

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Quiz for the spinal cord for Touro Neuroscience course

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Spinal Cord Touro Neuroscience Quiz

The spinal cord extends from the foramen magnum to _________________.

The cervical enlargement is located between_ and is enlarged due to the _____.

The anterior spinal artery branches are located in the ____________.

In the upper thoracic and cervical spinal cord, the posterior intermediate sulcus divides the ____________.

There are pairs of spinal nerves and the region that has one more than it's number of vertebrae is the _.

Spinal nerve T7 emerges between T6 and T7.

GSA, somatic sensory fibers, transmit information from _______________.

Local anesthetic drugs are injected into this space to anesthetize the lumbar and sacral spinal nerves during operative procedures and for postoperative pain control

The spinal cord is stabilized by these structures:

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.

The dorsal horn contains laminae:

Lamina ____ recieves descending motor pathways and proprioceptive input from the periphery and is located in the _.

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).

The ____________nucleus is located in spinal segments C3-C5.

Nuclei in the ventral horn are somaticotopically arranged so that the flexors are dorsally located and the extensors are ventrally located.

The crossed extensor reflex refers to

The myotactic reflex stimulates __ muscles and inhibits _ muscles from the tapped tendon.

The corticospinal tract conveys______________.

Spinocerebellar tract motor information is under conscious control.

If you took an axial CT scan at the level of S3, would you be able to visualize the cuneatus tract?

Internal arcuate fibers of the dorsal column tract decussation in the ____________.

Which tract has a lesion if coordination problems begin to occur?

All of the fibers in the coricospinal tract decussate in the medulla.

The rubrospinal tract is the minor descending motor pathway for the _______________.

Reticulospinal tract is responsible for_______________________

Spinal Cord Touro Neuroscience Quiz

The spinal cord extends from the foramen magnum to _________________.

The cervical enlargement is located between___________ and is enlarged due to the _______________.

The anterior spinal artery branches are located in the ____________.

In the upper thoracic and cervical spinal cord, the posterior intermediate sulcus divides the ____________.

There are ________ pairs of spinal nerves and the region that has one more than it's number of vertebrae is the _________.

Spinal nerve T7 emerges between T6 and T7.

GSA, somatic sensory fibers, transmit information from _______________.

Local anesthetic drugs are injected into this space to anesthetize the lumbar and sacral spinal nerves during operative procedures and for postoperative pain control

The spinal cord is stabilized by these structures:

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.

The dorsal horn contains laminae:

Lamina ____________ recieves descending motor pathways and proprioceptive input from the periphery and is located in the _________.

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).

The ____________nucleus is located in spinal segments C3-C5.

Nuclei in the ventral horn are somaticotopically arranged so that the flexors are dorsally located and the extensors are ventrally located.

The crossed extensor reflex refers to

The myotactic reflex stimulates ____________ muscles and inhibits ___________ muscles from the tapped tendon.

The corticospinal tract conveys______________.

Spinocerebellar tract motor information is under conscious control.

If you took an axial CT scan at the level of S3, would you be able to visualize the cuneatus tract?

Internal arcuate fibers of the dorsal column tract decussation in the ____________.

Which tract has a lesion if coordination problems begin to occur?

All of the fibers in the coricospinal tract decussate in the medulla.

The rubrospinal tract is the minor descending motor pathway for the _______________.

Reticulospinal tract is responsible for_______________________

The cervical enlargement is located between_ and is enlarged due to the _____.

There are pairs of spinal nerves and the region that has one more than it's number of vertebrae is the _.

Lamina ____ recieves descending motor pathways and proprioceptive input from the periphery and is located in the _.

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).

The myotactic reflex stimulates __ muscles and inhibits _ muscles from the tapped tendon.