What is the purpose of this exercise? Are there any safety concerns associated with this exercise? If so, list what they are and what precautions should be taken.…
c. Describe the path that urine takes to exit the body, starting in the kidney.…
In this experiment, contractions of the earthworm gut are measured in an organ bath with a force transducer. The effect of neurotransmitters and ionic concentrations on contraction strength and rate will be investigated.…
B. It binds to the target cell surface receptors and never goes through the membrane.…
Schettler, T. (2001). Toxic threats to neurologic development of children. Environmental Health Perspective 109(6). P. 813–6 Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1240616/pdf/ehp109s-000813.pdf…
2) Why did the metabolic rates differ between the normal rat and the surgically altered rats? How well did the results compare with your prediction?…
How could you treat a thyroidectomized animal so that it functioned like a “normal” animal? I would assume giving it shots of thyroxine or t4, of course by measuring weight and figuring out exactly the right amount to keep it established.…
* HDL: 32 mg/dL- Decreased levels of HDL indicates metabolic syndrome and increased risk of diabetes mellitus…
Through our wide span utilization of chemicals, we’ve altered the condition of our Earth in unpretentious ways. Such chemicals include arsenic (which is a supreme cancer causer) and DDT (dichloro-diphenyl-trichloror-ethane). With the mentioning of DDT, the idea is introduced that these toxins not only stick to our bodies by hiding in our fats and bones but also act as mutations that can be carried on to our next generations. She spends the majority of the chapter listing off other pesticides like Dieldrin, Heptachlor, Chlordane, and Aldrin. She also talks of herbicides which are chemicals that kill plants…
The purpose of this paper is to reflect on Sandra Steingraber 's book, Living Downstream: An Ecologist Looks at Cancer and the Environment. I will examine Sandra Steingraber 's compilation of scientific studies that link environmental pollution, contamination and toxicity to various types of cancers in humans and in animals as well. I will also discuss my personal opinion of the book, how my thinking and perspective has changed as a result of this book, and the importance and value of educating oneself by reading books such as this.…
B. Hormones diffuse from ( interstitial fluid )into ( bloodstream ) and eventually act on ( cells )…
The book, Silent Spring, by Rachel Carson is regarded as the most significant environmental novel as it was the start of the environmental movement. This book highlights the human poisoning of the biosphere through chemicals aimed at pests and disease control, particularly dichlorodiphenyltrichloroethane (DDT). DDT pesticides were particularly harmful because as they entered the biosphere, they not only killed the bugs but also entered the food chain. DDT accumulated in the fatty tissues of animals and humans which had potential to cause cancer and genetic damage. This also contaminated world food supply as DDT can enter any animal that we eat. Despite the immense effect of DDT some insects survived and passed on their resistance resulting in tougher descendants, so more toxic insecticides needed to be…
The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things. The endocrine system is a very important system in the human body. There are many endocrine glands in this system, including -but not limited to- the pituitary gland, hypothalamus, pineal gland, thyroid gland, parathyroid glands, adrenal glands, pancreas, gonads, placenta, thymus, heart and gastric and intestinal mucosa. Endocrine glands are ductless glands that secrete hormones directly into the blood stream. The basic function of the endocrine system is to maintain homeostasis. The endocrine system uses hormones to communicate/control.…
Cushing Syndrome is a condition that presents itself due to the endocrine system. The endocrine system is responsible for secretion of hormones. Cushing syndrome comes about when the body has excess levels of a hormone called cortisol in the body. Cortisol is very important. It plays a role in managing blood pressure and keeps the cardiovascular system functioning normally. Cortisol also aids the body in digesting fats and carbohydrates found in a person’s diet and converts those to energy that the body can use.…
Menopause is defined as cessation of menstruation for one year usually occurring between the ages of 45 and 55 (3). Replacement of estrogen, progesterone and testosterone, or HRT, is a common treatment for symptoms associated with menopause. The available HRT options are conventional HRT (CHRT)(4) and bioidentical HRT (BHRT). CHRT was developed in the 1940s to solve the problem that bioidentical hormones degraded rapidly (5). After development, CHRT was tested, approved by the Food and Drug Administration (FDA) and then prescribed to control menopausal symptoms. BHRT (estradiol, estrone, estriol, progesterone and testosterone) was first made available in the 1930s. BHRT is prescribed by a physician and prepared by a “compounding pharmacy”. In Canada, compounding pharmacies are provincially regulated and employ professional pharmacists that provide individualized custom preparations for…