case study neurons and cell communication worksheet

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Case Study Neurons and Cell Communication

Unit 4: cell communication and cell cycle, mcnaughton high school - moosomin-sk, recommended for you, students also viewed.

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Name:________________________________ date:, case study: neurons and cell communication, part 1: christmas lights, jenna was home from college for thanksgiving and was, helping her mom put up christmas lights when she noticed, that her mother, margaret, was having trouble holding onto, the wires and her hand seemed to be shaking. after the, third time she dropped the wire, jenna asked if there was, anything wrong., her mother sat down with a sigh “i’ve just been tired lately, it feels like everything takes so much energy that i, just don’t have.” when her mother stood back up, she stumbled and nearly fell., jenna returned to college to finish the semester but she was still troubled. she spoke to her father on the, phone to ask if there were other things her mother wasn’t telling her. her father admitted that her mother often, had slow speech and was losing her balance more frequently. she also complained about numbness or, tingling in her hands. the biggest issue was fatigue; some days her mother wouldn’t even get out of bed., she tried to reassure her father: “mom is only 40 years old, surely it can’t be anything serious.” though she, tried to reassure her father, she knew from her biology classes that those symptoms could indicate a, neurological disorder. neurological disorders affect the brain and nerves., jenna suggested her mother see a neurologist, a type of doctor that specializes in nerves and nervous, system disorders. that doctor could use magnetic resonance imaging (mri) to see if there’s anything, 1. what are margaret’s symptoms, 2. what is a “neurological disorder”, 3. what is fatigue what illnesses could cause fatigue, 4. how would a neurologist determine if there was a problem in the brain, part 2: a lesson on the neuron, margaret finally took her daughter’s advice and decided to see a doctor about how she felt tired all the time, and experiencing tingling in her hands. the doctor performed several tests in the office but said he wanted to, do a spinal tap, to get fluid from her brain and spinal cord. margaret was alarmed, was there something, wrong with her brain, the doctor tried to reassure her as he scheduled the spinal tap. “we just need to rule some things out.” in the, meantime, i’d like you to start taking this antibiotic, just in case you have an inner ear infection that might be, causing the dizzy spells.”, margaret was skeptical, she’d had ear infections before and this didn’t seem like an ear problem. she felt the, doctor might be hiding something from her so she decided to call jenna., jenna told her that a spinal tap might indicate an infection on the brain, like meningitis. the test might also, show that it’s not a problem with her brain, but instead might be related to her neurons in her brain and, nervous system. and how her nerves were communicating with the rest of the body. she explained further:, “your central nervous system is your brain and spinal cord, where you have cells called neurons which do, your brain’s work. the brain can then send and receive messages from your peripheral nervous system,, where your muscles and senses are.”, jenna sent her mother a text message with a link to a video that explained neurons., ** watch “2-minute neuroscience: the neuron” - youtu/6qs83wd29py or biol/2mneuron, 5. sketch a neuron and label the important features of a neuron. annotate the features to include basic, functions of each part of the cell., 6. what is the difference between the central and peripheral nervous system, .part 4 - a lesson on myelin sheaths, margaret had taken a nerve conduction test and the lumbar, puncture (spinal tap). her neurologist noted that there were, antibodies in the spinal fluid and found her nerves were not, conducting as quickly as they should. she called her, daughter with the news, she had multiple sclerosis. ms is, considered an autoimmune disorder because symptoms are, caused by the body’s immune system attacking healthy cells., symptoms can be sporadic because myelin can repair itself., to reduce symptoms, margaret will take steroids that, suppress the immune system., jenna was also able to find some promising research on, drugs that can increase the rate of myelin repair. she shared, this research with her mother:, clemastine fumarate shows promise in treating ms, among the current investigations, a 2017 study published in lancet suggested that an, over-the-counter allergy drug called clemastine fumarate may promote myelin repair in the, brains of people with ms., in the study, 50 people with relapsing ms and optic nerve damage were given either a twice-daily, dose of clemastine or a placebo for 150 days. the participants then underwent visual evoked, potentials, which measure signal transmission from the retina of the eye through the optic nerve, to the brain., results revealed that the delay in visual evoked potentials was reduced by 1 milliseconds per eye, for the time that people were being treated with clemastine. this reduction in the nerve, transmission delay suggests that myelin repair occurred along the optic nerve signaling pathway., 9. why are symptoms of ms sporadic, 10. why is ms considered an autoimmune disorder, 11. what happened to the retina signals of patients who took clemastine, 12. another drug called guanabenz has been found to increase the survival of oligodendrocytes (cells that, produce myelin). how could this drug be helpful for someone with ms.

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Topic : Unit 4: Cell Communication and Cell Cycle

Subject : ap biology.

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