II - Neuro 2 Flashcards
TRUE or FALSE:
Cortical signs associated with water deprivation do not manifest until after animals are reintroduced to water. The key to preventing clinical disease is the SLOW reintroduction of water over 3-4 days.
True
TRUE or FALSE:
Treatment of sulfur intoxication as a cause of lesions consistent with polioencephalomalacia in a group of feedlot steers would include treatment with Thiamine HCl even though they have normal concentration of thiamine in the blood.
True
Which of the following statements regarding the clinical signs of Ryegrass staggers in cattle is correct?
- Cerebellar ataxia manifesting as hypermetria is a prominent feature of the disease
- Spastic paresis is a prominent sign that can result in accidental death in creeks and ditches
- Lolitrem B toxicity results in tetany and a “stiff-legged gait” due to hypomagnesemia
Cerebellar ataxia manifesting as hypermetria is a prominent feature of the disease
TRUE or FALSE:
Pleuropneumonia and myocarditis presenting as unresponsive pneumonia and pen deads (animals found dead in the pen without history of prior treatment) have replaced neurologic signs associated with Thrombotic Meningioencephalopathy as the predominant presentation of infection with Histophilus somni in feedlot cattle.
True
Which of the following lesions is consistent with Histophilosis in a high risk feed yard steer found unexpectedly dead in the pen 21 days after arrival?
- Thromboembolic meningioencephalitis (TEME)
- Myonecrosis of skeletal muscle of the neck and shoulder
- Vegetative valvular endocarditis in the right heart
- Myonecrosis of the papillary muscle of the left heart
Myonecrosis of the papillary muscle of the left heart
Enzootic ataxia (aka Swayback) is an unfortunate common name for a disease of lambs and kids that typically presents at 1-4 months of age as a progressive hind limb paresis leading to paralysis (e.g. hind limb weakness of neurogenic origin). Which of the following are an accurate description of the pathophysiologic insult and predisposing factor of this disease? Select all that apply.
- Degeneration / demyelination of upper motor neurons of the spinal cord due to copper deficiency of the young stock ration
- Degeneration / demyelination of upper motor neurons of the spinal cord due to copper deficiency of the dam’s ration during gestation
- Degeneration / demyelination of lower motor neurons of the spinal cord due to copper deficiency of the dam’s ration during gestation
- Degeneration / demyelination of lower motor neurons of the spinal cord due to copper deficiency of the young stock ration
- Degeneration / demyelination of lower motor neurons of the spinal cord due to copper deficiency of the dam’s ration during gestation
TRUE or FALSE:
Parenteral administration of a product like Multimin (Zn, Cu, Mn, Se) provides a sustained supply of Cu to livestock and can be used to prevent disease associated with copper deficiency.
False
Which of the following statements are correct regarding obturator nerve damage of cattle?
- Prolonged presence of calf in birth canal, pressure on obturator nerve(s) leads to aBductor muscle paresis
- Recumbency (inability to rise) following dystocia is commonly due to bilateral obturator nerve damage alone
- Prolonged presence of calf in birth canal, pressure on obturator nerve(s) leads to aDductor muscle paresis
- Recumbency (inability to rise) following dystocia resulting in obturator nerve damage is likely due to musculoskeletal damage following a fall due to inability to abduct the hind limbs on slippery surfaces
- Prolonged presence of calf in birth canal, pressure on obturator nerve(s) leads to aDductor muscle paresis
- Recumbency (inability to rise) following dystocia resulting in obturator nerve damage is likely due to musculoskeletal damage following a fall due to inability to abduct the hind limbs on slippery surfaces
Dystocia resulting in “calving paralysis” occurs most commonly due to damage to which of the following?
- DORSAL nerve roots of the Sciatic
- L2-L3 spinal cord
- VENTRAL nerve roots of the Sciatic nerve
- Obturator nerve(s)
VENTRAL nerve roots of the Sciatic nerve
