1. Once again, consider the spinal reflex that prevents the avulsion of tendon f

Question

1. Once again, consider the spinal reflex that prevents the avulsion of tendon from bone. What would you expect to find in body space?

a single sensory neuron synapsing with many -motor neurons

a single sensory neuron synapsing with many glycinergic interneurons

2. The term rigor mortis denotes temporary rigidity throughout the musculature after death. This effect can be explained in terms of:

a. denaturation of actomyosin

b. intracellular energy depletion that disables Ca2+sequestration

3. Assume that Clarke’s columns were one neuroanatomical landmark within our model animal.

Where would you find these two nuclei in body space?

a. along the length of the cord

b. only in the pelvic cord

4. What type of sensory information is routed into Clarke’s columns?

proprioceptor input or nociceptor input

5. Axons from interneurons in Clarke’s nuclei project through the cord towards the

cerebellum

brainstem

Explanation / Answer

1. A single sensory neuron synapsing with many -motor neurons.

2. The term rigor mortis denotes temporary rigidity throughout the musculature after death. This effect can be explained in terms of intracellular energy depletion that disables Ca2+ sequestration.

3. Only in the pelvic cord

4. Proprioceptor input is the type of sensory information routed into Clarke’s columns

5. Axons from interneurons in Clarke’s nuclei project through the cord towards the cerebellum

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