Neuronal Damage And Recovery

Question 0

If we end up with too many disconnected, unused cells floating around, we disrupt the

Answer 0

Efficiency, connectivity, and speed of the entire system

Question 1

By what week in utero have we usually developed all requires nerve cells we will ever have

Answer 1

25th

But we have produced more than we need

Question 2

Apoptosis

Answer 2

Programmed death as much of 50% of cells that aren’t well-connected or we already have a redundant connection
Intentional death of cell body itself

Question 3

Synaptic pruning

Answer 3

Need to refine and support only efficient, necessary networks
Pruning away atonal connections that are not competitive, stimulated, used, or needed

Question 4

Apoptosis is programmed “clean”

Answer 4

Phagocytosis is executed without any explosive, leaky, mess

Question 5

Necrosis

Answer 5

Is messy unwanted phagocytosis, has a big mess on its hands

Tbi, cut off oxygen or blood

Question 6

Spinal cord trauma

Answer 6

Bending, tearing, cutting, dislocation, hyperextension, hypereflexion
Damage depends on level if SC injury, degree of injury

Question 7

Spinal cord injury- disease

Occlusion

Answer 7

Occlusion of arteries needed to supply neurons in the spinal cord
Anterior spinal artery occlusion due to atherosclerotic disease

Question 8

Degeneration of neurons in the spinal cord

Answer 8

Amyotrophic lateral sclerosis- ALS

Question 9

ALS

Answer 9

Progressive degeneration if lateral corticospinal tracts
Loss of anterior horn cells throughout sc and bs
Muscle atrophy, paresis, death
Spinal cord synapse are no longer available for motor control

Question 10

Spinal cord disease

Answer 10

Tumor

Question 11

Spinal cord disease inflammation

Answer 11

Transverse myelitis
Progressive inflammation and attack on myelin at one level of the sc
Better hope of recovery for this

Question 12

Spinal cord injury

Answer 12

Unnatural movement of axons

Depending where damage is/how far extend into spinal cord- motor or sensory