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physiology Essay Topics & Paper Examples

Formation of Sperm

The formation of sperm in humans, also called spermatogenesis is a process that spans 65-75 days and permits the production of approximately 300 million mature sperm per day in a normal male individual (Tortora and Derrickson, 2006, p. 1062). Sperm develop from the specialization of stem cells located close to the basement membrane of seminiferous tubules in the testis. These stem cells are called spermatogonia which form from the yolk sac or the extraembryonic membrane and migrate into the testis during the fifth week of embryonic development (Tortora and Derrickson, 2006, p. 1059, G37). Spermatogonia are inactive during childhood as spermatogenesis begins at the onset of puberty – around 10 years of age when hormones effect the maturation of the…

Anatomy and physiology of the human body

Each week, the discussion questions will examine issues in the reading. This thread is meant to foster a better understanding of the anatomy and physiology of the human body and how that knowledge is applied to in real life situations. Discussion responses should be on topic, original, and contribute to the quality of the discussion by making frequent informed references to lesson material. Initial discussion responses should be around 100 words; responses to your classmates or instructor should be around 75 words. Make two or more responses to classmates that are thoughtful and that advance the discussion of each topic. Your initial response is to be made no later than Saturday 11:59 PM of the current unit. Additional responses are…

The Lymphatic System

A. What was the purpose of doing this exercise? The purpose of this exercise was to learn about the lymphatic system and its components. We learned about lymph, structure and function of lymph nodes, T-Cells, B-Cells, and Macrophages, and differentiating between antigens and antibodies. Exercise 1: Microscopic Anatomy of Lymphatic Structures A. Sketch of Reticular Connective Tissue Slide (Lymph Node). Describe the structures you observed on the slide. B. Sketch of Spleen Slide: Describe the structures you observed on the slide. C. Sketch of Tonsil Slide: Describe the structures you observed on the slide. D. Sketch of Thymus Slide: Describe the structures you observed on the slide. Exercise 2: Immunity and the Immune Respose A. Describe what happened to the…

Physiology of Aging

Physiology of aging is two different terms with a common meaning. That is, the aging processes. The term ‘physiology’ is defined by White (2008) as “the biological study of the processes and activities of the working parts and systems in the human body” (p. 8). Aging on the other hand simply refers to accumulation of age. Thus, in a sense, physiology of aging refers to the natural processes of the human body as it accumulates more years of existence. This processes according to Rastogi (2001) is “characterized by deterioration of several functions…and its rate occurs at different times” (p. 519). Physiology aging therefore Based on the definitions of White and Rastogi, it appears that physiology is a process that facilitates…

Two case studies on the integumentary system

Chief Complaint: 8-year-old girl admitted for severe second- and third-degree burns following her rescue from a burning house. History: Angela Creighton, an 8-year-old white female, was transported by ambulance to the emergency room after being rescued from her burning house. She was asleep at night when a spark from the family fireplace started a fire, leaving her trapped in her bedroom. By the time the fire rescue squad arrived, she had suffered severe burns and excessive smoke inhalation. In the emergency room, Angela was unconscious. She had second-degree burns over 5% of her body and third-degree burns over 15% of her body — both covering her thoracic and abdominal regions and her right elbow. Her vital signs were quite unstable:…

Explaining the Concept of Homeostasis

The actual word homeostasis means “steady state”. Homeostasis describes how the body regulates its process to keep its internal conditions as stable as possible. Homeostasis is necessary because human cells are efficient but very demanding. The phrase homeostasis is a bit confusing; conditions inside our bodies are not constant but are kept within a narrow range. Some factors such as temperature and blood PH change slightly while others such as blood glucose very considerably throughout a normal day without producing any harmful effects. A brief description of homeostasis is that it is maintenance of a constant internal environment in response to a change in external environment. Negative feed makes sure that as levels return to normal, corrective mechanisms are scaled…

Homeostatic Imbalances a person on Dialysis Might Face

The human body relies on homeostasis to function properly, so the body makes adjustments constantly to keep balanced within physiological limits. The kidneys in the urinary system are a major workhorse in keeping the body in balance. They regulate the ionic composition of blood, pH of blood, blood volume, blood pressure, blood glucose, production of hormones, and excretion of foreign materials and waste products (Jenkins & Tortora, 2013). If this process fails or there is impairment (renal failure), then a person relies on dialysis to artificially clean the blood, remove excess fluid and electrolytes. The patient will have to go to a facility to have this done on a routine schedule. The dialysis machine uses dialysate solution to maintain diffusion…

Organisms Physiology

Organism Physiology is the method in which many diverse living organisms are considered to have developed from earlier forms during the history of the earth that can be defined as Evolution. Several organisms have evolved as a result of environmental changes within their habitats. Example is a diagram of a whale and details about how the whale has evolved physiologically and has become adapted to fit the environment. Kingdom: Animalia, Phylum: Cordata, Class: Mammalia, Order: Cetacea, Sub-order: Odontoceti, Family: Delphinidae, Genus: Orcinus, Species: Orca. Whales occupy all oceans and major seas, even some are in larger river systems. They are very large animals. They can grow up to 100 ft. or more in length. They can weigh up to 200…