Spinal Cord Lesion & Blood Supply

Question 1

Mention results of complete spinal cord transection

Answer 1

Above C5, death due to respiratory muscle paralysis
Between C5 & T1 —quadriplegia
Below T1 — paraplegia

Question 2

Mention resukts of hemisection of spinal cord at different levels

Answer 2

At level of lesion, ipsiltaeral loss of all sensations (interruption of dorsal horn), LMNL due to damage of ant horn cells
Below level of lesion ipsilateral, loss of proprioceptive sensations (dorsal white column affection) + UMNL (interruption of corticospinal tract)
Below level of lesion contralateral, loss of pain & temperature sensations (lateral spinothalamic tract lesion)

Question 3

Mention results of anterior spinal artery occlusion on spinal cord

Answer 3

1. Biltaeral UMNL below level of lesion.
2. Bilateral loss of pain & temp below lesion with preservation of proprioception & fine touch.

Question 4

Name the arterial circle around spinal cord

Answer 4

Arterial vasacorona

Question 5

Adamkieweicz artery arises from….,,

Answer 5

11th intercostal artery

Question 6

The …..segment is most likely to become ischemic while….has richest blood supply

Answer 6

Mid-thoracic
Lumbar

Question 7

Enumerate spinal veins

Answer 7

Anterior & posterior medial veins
2 Anterolateral & 2 potserokateral which run on either side of ventral & dorsal roots

Question 8

Spinal veins drain into…..which communicates with….. Near the skull, the longitudinal veins communicate with….&….

Answer 8

Internal vertebral venous plexus
Intervertebral veins
Cerebellar & cranial venous sinuses