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MED 412_2021 > Neuroanatomy 3- Spinal cord > Flashcards

Neuroanatomy 3- Spinal cord Flashcards

(61 cards)

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4
Q

82 year old female with chronic low back pain radiating to both legs. Pain is relieved when she leans forward or rests.

What is the abnormality and what could be the underlying cause?

A

L4/L5 Disc herniation and compression of the spinal nerves

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5
Q

The ____ _____and brainstem are supplied by the _______-_______ ______. The _______ is supplied by both the vertebral-basilar system and ______ _______ system.

A

The spinal cord and brainstem are supplied by the vertebral-basilar system. The cortex is supplied by both the vertebral-basilar system and internal carotid system.

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6
Q

All along the spinal cord you can find ____ anterior spinal artery and____ posterior spinal arteries.

A

All along the spinal cord you can find one anterior spinal artery and two posterior spinal arteries.

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12
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What space is highlighted

A

Epidural Space

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13
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What space is highlighted?

A

Subarachnoid space

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14
Q

What is the Filum Terminale made of and what is its function

A

Extension of the pia and supporting cells and it attaches to the caudal end of the spinal cord to coccyx

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15
Q

What is in the white mater

A

Ascending and descending tracts

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16
Q

Where are the sympathetic neurons located?

A

In the lateral horn of spinal cord T1-L2

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17
Q

Where are the parasympathetic neurons located

A

CN 3,7,9,10 in the brainstem and in the lateral horn of S2,3,4

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18
Q
A

Green: substantia gelatinosa

Blue: Lissaur’s tract

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19
Q

which part of the spinal cord has the most white matter

A

Cervical

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20
Q

What type fo motor neurons are in the Lateral grey horn

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21
Q

Which part of the spinal cord has the most grey matter

A

Sacral spine

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22
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23
Q

1) Fibres carrying Pain and temp information enter in the ______. _______
2) Fibers travel up and down _______ _______
3) The first synapses occur in the ______ _______ of the posterior horn
4) These 2nd order neurons now cross the midline in the _____ ___ ______ and ascend inthe spinothalamic tract

A

1) Fibres carrying Pain and temp information enter in the posterior horn
2) Fibers travel up and down Lissauer’s tract
3) The first synapses occur in the substantia gelatinosa of the posterior horn
4) These 2nd order neurons now cross the midline in the Anterior white commissure and ascend inthe spinothalamic tract

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24
Q

What is the purple

A

Anterior white commissure

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Where is this section from?
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Ligth blue: Nucleus Cuneatus Dark blue: Fasciculus Cuneatus
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Light blue: Nucleus Gracilis Dark Blue: Fasciculus Gracilis
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Yellow: Spinothalamic Tract Pink: SPINOCEREBELLAR TRACT
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What is this a slice of
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Yellow : Spinothalamic tract Pink: spinal cerebellar tract Orange: lateral Corticospinal tract Blue Fasciculus cuneatus
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Blue: Faciculus Gracillis Orange: Anterior cortico spinal tract
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Orange: Pyramid Red" internal arcuate fibers
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What is this
Superior medulla
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Yellow: Spinothalamic tract Purple: medial lemniscus Brown/Grey: medial longitudinal fasciculus Pink: Spinocerebellar tract Orange: Pyramid
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What is this a slice of?
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Purple: medial lemniscus Brown/Grey: medial longitudinal fasciculus Orange: Corticospinal fibers
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What is this a slice of
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Yellow: Spinothalamic tract Purple: medial lemniscus Brown/Grey: medial longitudinal fasciculus
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What is the function of the lateral corticospinal tract?
Skilled movement of the extremities
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What is the function of the anterior corticospinal tract
Postural adjustment and help stablize the body with muscles of the trunk
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What is the blood supply of the anterior cortical spinal tract
THe anterior spinal artery
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What is the blood supply of the lateral corticospinal tract?
Posterior spinal arteris and the anterior spinal artery
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Where does the corticospinal tract originate from?
The motor cortex
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Where does the corticospianl tract decussate
85% of the fibers decussate in the medulla at the decussation of the pyramids and from the lateral(crossed 85% )and anterior corticospinal tract (15% uncrossed)
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Where does the fibres of the anterior corticospinal tract cross
THey cross at the midline in the spinal cord where they terminate at LMN
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Descending fibres of the corticospinal tract fROm the _____ **\_\_\_\_\_** and converge to pass through the **\_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_**of the **\_\_\_\_\_\_ \_\_\_\_\_\_**
Descending fibres of the corticospinal tract form the **Corona Radiata** and converge to pass through the **posterior limb** of the **internal capsule**
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Contralaterla hemiparesis
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what is the function posterior column medial lemniscus pathway
Discriminative touch pressure vibration proprioception
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What spinal tracts are found in the fasciculus gracilis (somatotopic organization)
The sacral and lumbar regions of the spinal cord
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What is the blood supply of the Posterior column medial lemniscus pathway?
The posterior spinal arteries
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Secondary neurons of the posterior column-medial lemniscus pathway cross the midline as _____ \_\_\_\_\_
Secondary neurons of the posterior column-medial lemniscus pathway cross the midline as Arcuate fibres
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What type if innervation does the internal urethral sphincter have?
Sympathetic
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What type if innervation does theDetrusor muscle have?
Parasympathetic S12,3,4
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* What type if innervation does the External urethral sphincter have?
Somatic
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What centre in the pons coordinates the action of voiding?
Pontine micturition centre
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At rest/bladder filling the Pontine micturition centre _____ neurons with **\_\_\_\_\_\_\_\_** actions and activates neurons with **\_\_\_\_\_\_\_\_** innervation
At rest/bladder filling the Pontine micturition centre i**nhibits** neurons with **parasympathetic** actions and activates neurons with **Sypmathetic** innervation
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Spastic bladder results from a lesion ______ T12
Spastic bladder results from a lesion **above** T12
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Flaccid bladder occurs a lesion _____ T12
Flaccid bladder occurs a lesion **BELOW** T12
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MED 412_2021 (12 decks)

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