Category Archives: Environment

Flipped and Distant Multi-Section Teaching: An A&P Course Director’s Perspective, Pandemic Plan, and Transition Back to the Classroom.
Historically, flipped classrooms have been around since the mid-2000s and began as bottom-up pilot experiments in a single classroom or section of a course at the will of an inventive instructor. With a robust body of literature deeming these modern content delivery models effective in achieving student success in the classroom and beyond, many educators in the sciences have adopted this approach to active learning. However, I doubt very few decided the pandemic-forced transition to distance learning was the right time to pull the trigger on flipped classroom implementation at the course director level in a multi-section course. I’m happy to share my wild idea and the wild ride we (myself and the A&P faculty at Jefferson) have been on while we were “building the plane as we flew it” over the past 2 years.

I direct A&P undergraduate courses at Thomas Jefferson University and manage a large staff (12 faculty) consisting of myself and a largely part-time adjunct workforce serving about 300 undergrads spread across 12 sections of lecture and 20 sections of lab. Since 2019 when I took the job at Jefferson we have been ballooning with growth and the demand for A&P courses has nearly doubled in the past 3 years. I was just getting used to the new course director role, when we were all challenged in March of 2020. Overnight I went from settling into my new job, to calling upon every skill and resource I had in my academic tool bag.

This unique choice to flip at the director level was borne out of pandemic-generated necessity for a means to deliver a single series of digital content of core A&P concepts, remotely, to all students to ensure an equitable experience across sections. The A&P courses at Jefferson have historically been face-to-face only with the exception of a few “snow days” with “take-home” assignments across the Spring semester during hard Philadelphia winters. The decision to flip a classroom in general aligns well with Jefferson’s active (Nexus) learning approaches, however a flipped distant digital classroom taught in a course director-led multi-section, multi-instructor course is something only a pandemic makes one crazy enough to dream up.

Additional rationale for the implementation of the flip in Fall of 2020 was to seize the day, using March of 2020 as an opportunity to fully revamp a dated class, albeit in a very stressful crisis mode. At that very infamous time, during widespread lockdown, emergency recordings of A&P lectures over slides were the go-to tool to preserve the integrity of the course. With a small amount of course director forethought and rock star faculty teamwork, those initial post-spring break A&P II content videos were recorded with the thought and intention to not waste any effort as the entire sequence would in all likelihood need to be converted to a digital format to carry the FA20/SP21 rising cohort of students though the standard 2 semester A&P sequence.

While I can currently say from the perspective of the course director/major course designer that the goal of generating a flipped classroom that works both at distance and in person was absolutely, successfully, met.  I cannot yet speak to the experience of the faculty members who were handed the curricula and directed to teach in a new modality adopted over a short summer break in July of 2020. In hindsight, the A&P faculty ended up being tested much more than the students with little prep time, and direction to teach in a way they may be unfamiliar with, the flipped classroom, online. A plan for reflection and a revelation of the faculty member experience is in the works.

To better describe the design, active learning is implemented both equitably and autonomously across sections. All sections share the same assignment types, but not necessarily identical assignments nor the same instructor. All students must give two “teach-back” presentations where the student is tasked with becoming an expert on a single learning outcome (LO), and then “teaching-back” that learning outcome to a classroom audience of students. “Teach backs” account for about 25-30% of synchronous class time. The other 70-75% of synchronous class time is devoted to reviewing core concepts, demonstrating study strategies, and facilitating active learning activities. The active learning activities are curated by the course director with the intention that the individual instructors modify and adjust activities as they go, but have a safety net of resources to deliver the course as is.

Noteworthy, not all activities were totally unknown to the faculty with institutional knowledge when the new core curricula materials were shared. There were some upcycled former laboratory activities that were really “dry” classroom friendly labs. For example, basic sensory tests could be done at home with any willing quarantine mate. Activities requiring materials did have to wait for in person days. The future goal is to add more in-house generated collaborative work to the shared instructor pool to elevate each iteration of the course. However, “not fixing anything that wasn’t already broke” was deemed a resourceful jumping off point.

The course, now, is robust and both A&P I & II lab and lecture have run online in FA2020/SP2021. The course is now mid re-test during our first in person semester back, FA2021/SP2022, with the same content and resources generated in crisis mode March 2020-Summer2020-Fall 2020. We, transitioned synchronous lecture back to masked-face-to-masked-face in person learning in Fall of 2021 and the course is running as planned. No major changes needed to be made to Canvas sites housing core lecture content to make the shift back to in person. Courses were relatively easy to share and copy over to individual instructors prior to the start of the semester to allow time for autonomous course personalization.

The story is still in progress as we have only just begun to experience Spring of 2022. The course is being tested in another way now, with a virtual start and a mid-semester transition back to in person as the pandemic distance learning challenges keep coming. At this point I’m very grateful to say the course can also seamlessly transition with little notice from remote-to-face-to-face and back again. Collaborative drawing activities on white boards work on digital white boards with screen sharing. Paper worksheets can also be completed digitally and collaboratively in small digital break out rooms. Not every activity will transfer perfectly, but that is what makes a growing pool of shared instructor resources important and valuable. The flipped classroom does not have to be grassroots anymore. A growing body of generous teacher networks, education organizations, and professional societies continue to share and widely make active learning resources available to all and often, free.  And finally, there is also nothing like a global pandemic bearing down under uncompromising deadlines to force a little creativity and development of new ideas to share back to the community.

**Illustration by Andrea Rochat, MFA

Dr. Nanette J. Tomicek is an Assistant Professor of Biology in the College of Life Sciences at Thomas Jefferson University, East Falls where she has been a faculty member since 2019. Currently, she directs the undergraduate introductory A&P courses serving a variety of basic science, and clinical-track majors. Dr. Tomicek specializes in large lecture course, and multi-section course management and has previously done so at both Penn State (2006-2017) and Temple Universities (2017-2019). Her current work focuses on pedagogy, active learning, laboratory, and excellence in biology education. Dr. Tomicek is also an adjunct faculty member for Penn State World Campus in the Eberly College of Science. She has been teaching a special topics course, The Biology of Sex for almost 10 years and is an expert in reproductive physiology and digital course delivery. Past doctoral work at Penn State and research interests include developing targeted cardiovascular therapeutics for aging women, examining downstream estrogen receptor signaling pathways in the heart in an ovariectomized rat model of aging and estrogen deficiency. Dr. Tomicek earned her Ph.D. in Spring of 2012 at Penn State in the Intercollege Graduate Degree Program in Physiology, and is a proud active member of the Human Anatomy and Physiology Society.
Protecting yourself means more than a mask; should classes be moved outside?
Mari K. Hopper, PhD
Associate Dean for Biomedical Science
Sam Houston State University College of Osteopathic Medicine

Disruption sparks creativity and innovation. For example, in hopes of curbing viral spread by moving classroom instruction outdoors, one Texas University recently purchased “circus tents” to use as temporary outdoor classrooms.

Although circus tents may be a creative solution… solving one problem may inadvertently create another. Moving events outdoors may be effective in reducing viral spread, but it also increases the skin’s exposure to harmful ultraviolet (UV) radiation from the sun. The skin, our body’s largest organ by weight, is vulnerable to injury. For the skin to remain effective in its role of protecting us from pollutants, microbes, and excessive fluid loss – we must protect it.

It is well known that UV radiation, including UVA and UVB, has deleterious effects including sunburn, premature wrinkling and age spots, and most importantly an increased risk of developing skin cancer.

Although most of the solar radiation passing through the earth’s atmosphere is UVA, both UVA and UVB cause damage. This damage includes disruption of DNA resulting in the formation of dimers and generation of a DNA repair response. This response may include apoptosis of cells and the release of a number of inflammatory markers such as prostaglandins, histamine, reactive oxygen species, and bradykinin. This classic inflammatory response promotes vasodilation, edema, and the red, hot, and painful condition we refer to as “sun burn.”1,2

Prevention of sunburn is relatively easy and inexpensive. Best practice is to apply broad spectrum sunscreen (blocks both UVA and UVB) 30 minutes before exposure, and reapply every 90 minutes. Most dermatologists recommend using SPF (sun protection factor) of at least 30. Generally speaking, an SPF of 30 will prevent redness for approximately 30 times longer than without the sunscreen. An important point is that the sunscreen must be reapplied to maintain its protection.

There are two basic formulations for sunscreen:  chemical and physical. Chemical formulations are designed to be easier to rub into the skin. Chemical sunscreens act similar to a sponge as they “absorb” UV radiation and initiate a chemical reaction which transforms energy from UV rays into heat. Heat generated is then released from the skin.3  This type of sunscreen product typically contains one or more of the following active ingredient organic compounds: oxybenzone, avobenzone, octisalate, octocrylene, homosalate, and octinoxate. Physical sunscreens work by acting as a shield. This type of sunscreen sits on the surface of the skin and deflects the UV rays. Active ingredients zinc oxide and/or titanium dioxide act in this way.4  It’s interesting to note that some sunscreens include an expiration date – and others do not. It is reassuring that the FDA requires sunscreen to retain their original “strength” for three or more years.

In addition to sunscreen, clothing is effective in blocking UV skin exposure. Darker fabrics with denser weaves are effective, and so too are today’s specially designed fabrics. These special fabrics are tested in the laboratory to determine the ultraviolet protection factor (UPF) which is similar to SPF for sunscreen.  A fabric must carry a UPF rating of at least 30 to qualify for the Skin Cancer Foundation’s Seal of Recommendation. A UPF of 50 allows just 1/50th of the UV rays to penetrate (effectively blocking 98%). Some articles of clothing are produced with a finish that will wash out over time. Other fabrics have inherent properties that block UV rays and remain relatively unchanged due to washing (some loss of protection over time is unavoidable) – be careful to read the clothing label.

Some individuals prefer relying on protective clothing instead of sunscreen due to concerns about vitamin D synthesis. Vitamin D activation in the body includes an important chemical conversion stimulated by UV exposure in the skin – and there is concern that sunscreen interferes with this conversion. However, several studies, including a recent review by Neale, et al., concluded that use of sunscreen in natural conditions is NOT associated with vitamin D deficiency.5,6 The authors did go on to note that at the time of publication, they could not find trials testing the high SPF sunscreens that are widely available today (current products available for purchase include SPFs over 100).

Additional concern about use of sunscreens includes systemic absorption of potentially toxic chemicals found in sunscreen. A recent randomized clinical trial conducted by Matta and colleagues investigated the systemic absorption and pharmacokinetics of six active sunscreen ingredients under single and maximal use conditions. Seven Product formulations included lotion, aerosol spray, non-aerosol spray, and pump spray. Their study found that in response to repeat application over 75% of the body surface area, all 6 of the tested active ingredients were absorbed systemically. In this study, plasma concentrations surpassed the current FDA threshold for potentially waiving some of the additional safety studies for sunscreen. The authors went on to note that the data is difficult to translate to common use and further studies are needed. It is important to note that the authors also conclude that due to associated risk for development of skin cancer, we should continue to use sunscreen.

Yet another concern for using sunscreen is the potential for harmful environmental and human health impact. Sunscreen products that include organic UV filters have been implicated in adverse reactions in coral and fish, allergic reactions, and possible endocrine disruption.8,9 In some areas, specific sunscreen products are now being banned (for example, beginning January of 2021, Hawaii will ban products that include oxybenzone and octinoxate). As there are alternatives to the use of various organic compounds, there is a need to continue to monitor and weigh the benefit verses the potential negative effects.

Although the use of sunscreen is being questioned, there is the potential for a decline in use to be associated with an increase in skin cancer. Skin cancer, although on the decline in recent years, is the most common type of cancer in the U.S. It is estimated that more than 3 million people in the United States are diagnosed with skin cancers each year ( Although this is fewer than the current number of Americans diagnosed with COVID-19 (Centers for Disease Control and Prevention, July 20, 2020) – changes in human behavior during the pandemic (spending more time outdoors) may inadvertently result in an increase in the number of skin cancer cases in future years.  

While we responsibly counter the impact of COVID-19 by wearing masks, socially distancing, and congregating outdoors – we must also continue to protect ourselves from damaging effects of the sun. As physiologists, we are called upon to continue to investigate the physiological impacts of various sunscreen delivery modes (lotion, aerosol, non-aerosol spray, and pumps) and SPF formulations. We are also challenged to investigate inadvertent and potentially negative impacts of sunscreen including altered Vitamin D metabolism, systemic absorption of organic chemicals, and potentially adverse environmental and health outcomes.

Again, solving one problem may create another challenge – the work of a physiologist is never done!

Stay safe friends!



  1. Lopes DM, McMahon SB. Ultraviolet radiation on the skin: a painful experience? CNS neuroscience & therapeutics. 2016;22(2):118-126.
  2. Dawes JM, Calvo M, Perkins JR, et al. CXCL5 mediates UVB irradiation–induced pain. Science translational medicine. 2011;3(90):90ra60-90ra60.
  3. Kimbrough DR. The photochemistry of sunscreens. Journal of chemical education. 1997;74(1):51.
  4. Tsuzuki T, Nearn M, Trotter G. Substantially visibly transparent topical physical sunscreen formulation. In: Google Patents; 2003.
  5. Passeron T, Bouillon R, Callender V, et al. Sunscreen photoprotection and vitamin D status. British Journal of Dermatology. 2019;181(5):916-931.
  6. Neale RE, Khan SR, Lucas RM, Waterhouse M, Whiteman DC, Olsen CM. The effect of sunscreen on vitamin D: a review. British Journal of Dermatology. 2019;181(5):907-915.
  7. Matta MK, Florian J, Zusterzeel R, et al. Effect of sunscreen application on plasma concentration of sunscreen active ingredients: a randomized clinical trial. Jama. 2020;323(3):256-267.
  8. Schneider SL, Lim HW. Review of environmental effects of oxybenzone and other sunscreen active ingredients. Journal of the American Academy of Dermatology. 2019;80(1):266-271.
  9. DiNardo JC, Downs CA. Dermatological and environmental toxicological impact of the sunscreen ingredient oxybenzone/benzophenone‐3. Journal of cosmetic dermatology. 2018;17(1):15-19.

    All images from:
    Royalty Free Stock Pictures – Public Domain Images

Prior to accepting the Dean’s positon at Sam Houston State University, Dr Hopper taught physiology and served as the Director of Student Research and Scholarly Work at Indiana University School of Medicine (IUSM). Dr Hopper earned tenure at IUSM and was twice awarded the Trustees Teaching Award. Based on her experience in developing curriculum, addressing accreditation and teaching and mentoring of medical students, she was selected to help build a new program of Osteopathic Medicine at SHSU. Active in a number of professional organizations, Dr. Hopper is past chair of the Chapter Advisory Council Chair for the American Physiological Society, the HAPS Conference Site Selection Committee, and Past-President of the Indiana Physiological Society.