Studies looking at imagery in the brain, including Kosslyn’s transcranial magnetic stimulation experiment on brain activation that occurs in response to imagery, have found that the brain activity in the visual cortex
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If the plumb line falls posterior to the knee joint, which m…
If the plumb line falls posterior to the knee joint, which muscle group must contract constantly to maintain upright posture?
A nurse determines that high patient‑to‑nurse ratios are con…
A nurse determines that high patient‑to‑nurse ratios are contributing to increased medication errors and decides to advocate for change at the state level. Which action would the nurse take to most effectively support this advocacy effort?
A client becomes visibly uncomfortable after the nurse uses…
A client becomes visibly uncomfortable after the nurse uses the term “normal.” What is the best immediate nursing response?
Why are certain descriptive terms discouraged in professiona…
Why are certain descriptive terms discouraged in professional health care communication due to their historical use in marginalizing specific populations?
Language used in clinical documentation can most directly in…
Language used in clinical documentation can most directly influence which outcome?
Using the phrase “person with diabetes” instead of “diabetic…
Using the phrase “person with diabetes” instead of “diabetic” demonstrates which principle?
Hydrocarbon Resources: Which statements are correct regardi…
Hydrocarbon Resources: Which statements are correct regarding petroleum formation and movement? (Chose all that are correct)
After you completed your exam, scan your solution pages into…
After you completed your exam, scan your solution pages into a single PDF, name it Final_Student Name (example: Final_JohnSmith). Before uploading, verify your file has all the pages you need to submit. Upload it by clicking on “Choose a File” button in “Question 1” below. You are only allowed to upload one file to a question. Then click “Submit Quiz”. You may get a warning saying that you have some unanswered questions if you do not use optional file upload sections, click OK to submit anyway. View quiz document here. Use double-sided arrow icon on the tool bar below to preview it in full screen mode. You can also download it by clicking on the downwards arrow to the right of the exam file and open it on your computer. Final-2026.pdf
Synthetic surgical mesh devices are used to provide support…
Synthetic surgical mesh devices are used to provide support for damaged or weakened tissues in a variety of procedures including hernia repair, heart stents, and pelvic organ prolapse repair. These materials provide robust mechanical strength, but also cause a foreign body response with the associated complications of fibrosis and patient discomfort. In contrast, surgical mesh devices composed of naturally occurring extracellular matrix (ECM) are associated with constructive tissue remodeling, but lack the mechanical strength of synthetic materials. A study was performed to compare different synthetic surgical meshes: Uncoated and ECM coated heavy-weight BARD™ Mesh, light-weight ULTRAPRO™ mesh with a degradable mesh fiber component, and a light-weight BARD™ Soft Mesh. All 4 devices were implanted into a rat partial thickness abdominal defect overlay model and some of the results are shown below: Fig 2. Picrosirius red staining and quantification of collagen area between mesh fibers using polarized light microscopy. (A–D) Collagen fibers between the mesh fibers of each device after 35 days. The color hue of the fibers represents the relative collagen thicknesses: (in order of thinnest to thickest) green, yellow, orange, and red. (E) Quantification of the total area and proportion of collagen (defined by color hue) in each mesh after 35 days. Significant differences (p-value < 0.05) in total collagen content between devices within each time point are denoted: (*) as different from the ECM coated BARD™ Mesh, ($) as different from ULTRAPRO™, and (#) as different from BARD™ Soft Mesh. Scale bar represents 100 μm. J Biomedical Materials Res, Volume: 102, Issue: 1, Pages: 234-246, First published: 19 July 2013, DOI: (10.1002/jbm.a.34671) A. (.75 pts) Figure 2 shows the immunohistochemistry staining of collagen fibers with picosirius red in which the color of the staining indicates the fiber thickness. Briefly (in 2 sentences or less) describe immunohistochemistry staining and how it works. B.(.5 pts) Briefly (one sentence or less) describe the role of collagen in the extracellular matrix. C. (.5 pts) Fibrosis and patient discomfort are indicated by thicker collagen fibers and increased collagen content. Are there significant differences in the collagen content between the meshes? Which would be better for reducing patient discomfort for synthetic mesh surgeries? D. (1.5 pts) Based on prior literature, you know that monocytes can differentiation into macrophages that can have either a more pro-inflammatory and destructive phenotype (called M2) or an immunomodulatory/pro-healing phenotype (called M1). These different macrophage types express different cell surface markers. What assay could use to quantify the population of macrophages exposed to different surgical meshes and if they are M1 or M2 macrophages? Briefly describe the how it works. (Not required, but specifically CD206 is a marker for M2 and HLA-DR is a marker for M1 if you’d like to draw a diagram).