Human Anatomy at Colby

Danielle Levine (’15, Biology)

To complete the Biology major at Colby, one has to take a minimum of six biology lab classes. As a senior biology major who at the end of the fall semester needed to take one more biology lab class, I chose to sign up for BI265 Introduction to Anatomy and Physiology for my January course rather than take an additional lab course (I will be taking the second semester of physics, which also has a lab) in the spring with my busy tennis team schedule. Having been warned before the class started that anatomy and physiology courses are a lot of work and a whole lot of memorization, I was expecting and prepared for an intensive month – but as the first week started, I found I was not quite ready for this class! During the first week, I was very nervous about the class – very concerned and stressed about the workload – and I remember wondering if I made the right decision to take the class, or if I should have just taken another lab course in the spring. After having now finished the class, I am very grateful for the opportunity to have taken BI265 with Dr. Klepach, as I truly enjoyed the class (excepting, of course, that first very difficult week!) to the fullest extent. I would recommend this class to every biology major, pre-med student, or any student at Colby just interested in learning how the human body works.

The class was, in fact, a lot of work, from studying for quizzes for almost every lecture, to listening to podcasts of lectures and labs for the next day, to making and presenting a Grand Rounds powerpoint to physicians and nurse practitioners, to studying for hours on end memorizing and identifying different anatomical structures and features on plastic models in the lab. However, the amount of material I learned and the understanding I achieved with respect to the structure and function of the human body was unimaginable to me before I took the class. The sheer volume of knowledge to be gained from this course is reason enough to recommend this class to other Colby students.

As a pre-med student, I am easily caught up with concern over my grades, GPA, exams and assignments, but taking this class reminded me of the importance of seeking to understand and learn material for oneself and for one’s own knowledge rather than for the primary purpose of getting a certain grade on an exam. As I hope to become a medical professional one day, this class had many practical aspects beyond the classroom; I was able to practice presentation skills via the class’s Grand Rounds presentation project, build a foundation of human anatomy and physiology for medical school (which I hope to go to!), learn how to succeed under stressful situations, and finally, balance my schedule keeping in mind the importance of maintaining a healthy lifestyle.

In taking this course, I was given many wonderful opportunities, such as being able to perform a wet dissection of a pig heart, and then being able to help visiting high school students perform a dissection on another pig heart, teaching them and sharing with them the material I had learned about the cardiovascular system the week prior, listening to guest lecturers, including Dr. Zak Nashed, who discussed interventional radiology and peripheral artery disease, and Dr. Peter Millard, who spoke about the field of epidemiology. Overall, I enjoyed this course very much, as it was a wonderful opportunity that I believe prepared me for the future after I graduate from Colby this spring, and reinforced my decision to pursue a career in medicine.

Here are some of the models used during lab and for studying for the lab practical exams.

Danielle Levine (’15, Biology)

One of the opportunities I had during this Jan Plan course was to participate in a Grand Rounds Presentation; Grand Rounds, in which physicians give lectures to their peers, including other physicians and medical students, on a medical topic is a common tradition in medical education. In groups of three students, we were able to pick any topic of interest for a fifteen minute oral presentation that we would present at the end of the semester. Given the vast array of medical topics that could be picked for a presentation, we looked to academic medical sources, including the New England Journal of Medicine, for possible past case studies that we could research and discuss. After scrolling through dozens of case studies, and clicking on articles with titles that seemed very interesting and then reading the articles’ summaries, we finally settled on an interesting case subject, one about celiac disease or gluten-induced enteropathy, that we considered particularly relevant given the current emphasis on the effects of gluten in the diet in popular culture.

In this case study, a 42-year old man presented to the emergency room with the chief complaint of chest and abdominal discomfort; given his additional history of unintentional weight loss and chronic diarrhea for ten years following coronary artery bypass grafting, an inflammatory disorder or a cancer of the chest or abdomen were differential diagnostic considerations. After multiple tests were performed, including an invasive exploratory laparotomy done after a CT scan showed enlarged jejunal lymph nodes, a small bowel biopsy revealed the diagnosis of celiac disease given the presence of flattened villi and intraepithelial lymphocytes. Today, celiac disease can be diagnosed via a simple blood test for IgA tissue transglutaminase and IgA endomysial antibodies. This case study demonstrates the importance for physicians, especially given the increasing incidence of celiac disease, to test for it non-invasively when a patient’s symptoms may be suggestive of it.

The diagnosis of celiac disease has been increasing in the developed world, at least in part due to the availability of new non-invasive tests to diagnose the autoimmune disorder. Also, there has been an increase in the diagnosis of non-celiac gluten sensitivity, which has been an even more significant factor in the increase in the number of people now adhering to a gluten free diet in the developed world. Unfortunately, some people do not have a true gluten-related disease or sensitivity, but are adopting a gluten free diet in a fad-like way. This is unfortunate because a gluten free diet can cause its own problems, such as nutritional (in particular, certain vitamins) deficiencies, and a lack of fiber in the diet leading to bowel-related issues.

Given the occurrence of a generalized increase in autoimmune disorders today, the hygiene hypothesis has been offered as a possible explanation, the basic tenet of which is that given increasingly prevalent strict hygienic practices, children today are exposed to fewer pathogens, and as a result can develop autoimmune disorders in which their own immune systems attack self antigens. Given the increasing numbers of people diagnosed with autoimmune disorders, it is hoped that research into celiac disease as well as other autoimmune disorders will lead to improved treatments of and ways to prevent them.

This Grand Rounds presentation was very informational as it allowed us to research a current topic of interest and, in so doing, learn the signs and symptoms that may exist at presentation of a certain disease (in this case, celiac disease), and how that disease may ultimately be diagnosed. As celiac disease is likely to continue to be a relatively common disease in the developed world, I believe this experience will be helpful to me, since I hope to become a physician someday. Being able to present our research to our peers as well as physicians and nurse practitioners, that is, to emulate something a real physician might engage in, was a wonderful experience. Furthermore, my mom, as a physician, talks about attending Grand Rounds Presentations every week at a hospital in New Jersey, and for me to be able to present a case study in the same manner was a fun and great opportunity.

http://youtu.be/DiKDOyG6Olg

Cameron Matticks, (’15, Cell & Molecular Biology) was the 2015 Bi265j TA and intern. Listen to his talk to the class about his experience below.

http://youtu.be/1uU5Tpgoaf8