Rheumatoid Arthritis-Links Between the Immune System and the Lymphatic System

I chose the objective “Explain the role of the lymphatic system in the immune response”. In the autoimmune disorder, Rheumatoid Arthritis (RA) the immune system malfunctions and identifies healthy immune tissue as a threat and begins an immune response that eventually trickles into the dysfunction and damages the lymphatic system.

Placenta Previa

My objective for the STEAM project is to describe placental formation and function, specifically on the topic of placenta previa. The media is water-based markers and colored pencil on paper. It depicts a fetus sitting on top of the placenta which is placed on top of the vaginal canal. Normally, …

The Lymphatic System- A Biological Waste Water Treatment Plan – Micah Hassen

For my project, I decided to cover the objectives “Identify the key structures of the Lymphatic System” and “Explain the role the Lymphatic System plays in the Immune Response”. I have related the individual members of the lymphatic system to the different structures that treat sewage: it is comprised of …

Eosinophils and How They Defend Against Helminths

Objective: Describe the various WBC and their function Topic: Eosinophils and how they defend against parasites Media: A drawn comic depicting how eosinophils fight against parasites. Eosinophils as a super hero and a parasite as the villain  In my comic eosinophils are shown as the super heroes fighting against the villain, …

Chronic Obstructive Pulmonary Disease

This project analyzes causes, symptoms and treatments of Chronic Obstructive Pulmonary Disease and the effects it has on the function and structure of the respiratory system. COPD is a progressive inflammatory airway disease characterized by perpetual restriction of airflow and related respiratory symptoms, due to damage to the airway and …

Follicular, Ovulatory, and Luteal Phases with and without PCOS: A model with clay

Two models are shown: one will show the normal development of tertiary follicles and dominant follicles, and the other will show the disrupted development in a woman with PCOS related to hormone imbalances.
This shows the follicular phase. As you can see, gonadotropin-releasing hormone (GnRH) stimulates follicle-stimulating hormone (FSH) and luteinizing hormone (LH) production. In the case of PCOS, too much LH is produced, resulting in several more follicles.
Continuing out the follicular phase, a dominant follicle produces estrogen, leading to a decrease in GnRH, LH, and FSH. In the ovary of a woman with PCOS, a dominant follicle does not emerge, and the regular estrogen production may not occur.
This shows the beginning of the ovulatory phase. The dominant follicle survives in the follicular phase, secretes estrogen, and triggers a positive feedback loop in that causes LH and FSH production to rise again. For a woman with PCOS, this positive feedback loop is never triggered.
During the luteal phase, the released oocyte travels towards the uterus while the granulosa and theca cells in the follicle form the corpus luteum, which produces progesterone. With PCOS, there is no corpus luteum and therefore no progesterone production.
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