for lecture exau she was the reason Annie felt despondent He

for lecture exau she was the reason Annie felt despondent. Her teammates were being kind to her, but she knew that injury, she her that her team swim meet against the neighboring college. To add insult to helped relieve that hard to see her sub-par times on the scoreboard. Even swim practice, which coach noticed stress in the past, had become taxing and she often found it difficult to breathe. Her practice. Annie were getting worse, even though he could see that she was working hard in told the doctor about her symptoms, who recommended she see a neurologist. 2a. hat were Annie\'s symptoms? fatigue and blurred vision At the neurologist office, Annie had been subjected to several different tests and finally got to see the doctor. The neurologist through the chart, Hmm, blurred vision, weak fingers, and decline in swimming performance. OK, let\'s see what we found out today. First, the nerve conduction and the electromyography (EMG) tests; these are the only results we have right now.This was the test when they put sticky electrodes on your skin, remember? One set of electrodes stimulated the nerve and another recorded its response a little way down the nerve. There is no nerve fatigue and the conduction velocity is fine. Now, the electromyography test involves recording from a muscle; it was done in two stages. The first stimulated the muscle directly, and there isn\'t too much out of the ordinary there. The second stage is when the nerves were stimulated and the muscle response was recorded. These results concern me because the muscle response decreased quickly during repeated nerve stimulation, indicating that your muscle response fatigued over time. 2b. According to the conduction test, was Annie\'s nerve function normal? NO, because the nene response decreased overtime 2c. According to Annie\'s EMG test, was Annie\'s skeletal muscle function normal? What aspect of it? yes

Solution

2b. Yes, Annie’s according to the neurologist nerve conduction test was normal

2C. No, Annie’s skeletal muscle function was not normal. In the electromyography test, The second test, Annie’s “muscle response decreased quickly during repeated nerve stimulation”.

2d. Nerve impulses that originate in the central nervous system cause muscles to contract. Both neurons and muscle tissue conduct electrical current by moving ions across cellular membranes. A motor neuron ends in a synapse with a muscle fiber. The neuron releases acetylcholine and transfers the action potential to the muscle tissue. The signal will travel through the tissue and trigger the contraction of individual sarcomeres. One synapse generally controls an entire muscle fiber. One motor neuron usually controls several adjacent muscle fibers

2e. sustained neural activity could create a dysfunction and result in a decrease in muscle response during repetitive motor nerve stimulation.

2f. During the repetitive stimulation of Annie’s nerves must be no transmission occurring along the pathway.This means that Annie’s central nervous system is having problems completing a message without delay which resulted these symptoms.