When Looking at EMG Interference Patterns,a "Picket Fence" Appearance Suggests

question 4

Multiple Choice

When looking at EMG interference patterns,a "picket fence" appearance suggests a neuropathic lesion.The "space between the pickets" helps determine whether the neuropathy is due to an upper motor neuron lesion (UMNL) or a lower motor neuron lesion (LMNL) ,because:

• A)With a LMNL,the problem is one of motor unit Activation,resulting in a larger space between pickets
• B)With a LMNL,the problem is one of motor unit Recruitment,resulting in a larger space between pickets
• C)With an UMNL,the problem is one of motor unit Activation,resulting in a larger space between pickets
• D)With a UMNL,the problem is one of motor unit Recruitment,resulting in a larger space between pickets

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Definitions:

Sporophyte

The diploid, spore-producing phase in the life cycle of plants that undergo alternation of generations.

Gametophyte

A stage in the life cycle of plants and algae that is haploid and produces gametes.

Pollen Tube

A long, slender growth from a pollen grain that penetrates the ovule, allowing the sperm to fertilize the egg in plants.

Foreign Plant Species

Plant species that are introduced to a region where they are not native, often leading to ecological changes or disruptions.