Clinical Chemistry 3 Lecture 5 CALCIUM HOMEOSTASIS AND HORMONAL REGULATION Roles of Calcium Signal transduction pathways àacts as a second messenger‚ in neurotransmitter release from neurons Contraction of all muscle cell types Fertilization Enzyme cofactor àblood-clotting cascade Proper bone formation PRINCIPAL ORGANS INVOLVED IN CALCIUM HOMEOSTASIS Small Intestines Bones (Skeletal System) Kidneys Normal Total Calcium: 2.2-2.6 mmol/L (9-10.5 mg/dL) Normal Ionized Calcium:
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Homeostasis 1.Meaning of Homeostasis: A) contributor and provider B) expand * C) same or constant D) receiver 2.What is the normal pH value for body fluid? A) 7.15-7.25 * B) 7.35-7.45 C) 7.55- 7.65 D) 7.00-7.35 E) 6.5-7.5 3.An example of the urinary system working with the respiratory system to regulate blood pH would be A) When you hold your breath the kidneys will remove CO2 from your blood B) If you exercise a lot your urine will become more acidic * C) If you develop emphysema
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Homeostasis is the tendency of an organism or a cell to regulate its internal conditions‚ usually by a system of feedback controls‚ so as to stabilize health and functioning‚ regardless of the outside changing conditions. Humans use homeostasis to regulate control systems such as body temperature‚ osmotic balance‚ blood pressure‚ blood glucose and respiratory gases in tissues. This report will focus on thermoregulation‚ which is the ability of an organism to keep its body temperature within certain
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AIDS (acquired immunodeficiency syndrome) is caused by HIV (human immunodeficiency virus). HIV is transmitted usually through unprotected sex with someone who is already infected‚ but it can also be transmitted through infected blood. The immune system is greatly affected by the disease. Once it enters the body‚ the virus recognizes a protein on helper T-cells‚ called CD4 (Cluster of Differentiation Antigen No. 4)‚ and it attaches onto that receptor to take over the CD4 cell. The result is a virus
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LABORATORY REPORT Activity: Homeostatic Imbalances of Thyroid Function Name: Theres Castle Instructor: Virgil Stoia Date: 10.20.2014 Predictions TSH levels in patients with primary hypothyroidism are high Thyroxine (T4) levels in patients with primary hypothyroidism are low TSH levels in patients with secondary hypothyroidism are low Thyroxine (T4) levels in patients with secondary hypothyroidism are low TSH levels in patients with hyperthyroidism are low Thyroxine
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Title: Homeostasis Date: 19th January 2010 Aim: To observe‚ draw and label the parts of a nephron. Apparatus: Slide of the transverse section of a kidney Pencil Paper Microscope Method: The slide of the transverse section of a kidney was mounted on the microscope and observed under high power. Drawings of the parts of the nephron were made. Calculations of Magnification: Loop of Henle One Ocular Division = 0.22 µm Size of Specimen = 2 ocular divisions Conversion of Ocular
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Hyperthermia occurs at a temperature of 38 degrees or above. Hyperthermia occurs by the body absorbing or generating heat faster than it can be gotten rid of. In extreme cases it can cause the body’s enzymes and organ systems to fail. According to Homeostasis thermoregulation notes.pdf‚ Hypothermia occurs when the body temperature increases without an increase in the set point of the thermoregulatory centre of the hypothalamus. It occurs when thermoregulation fails and is unable to bring the body temperature
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1) Homeostasis is the condition in which the body maintains a. changing state‚ within an unlimited range. b. an equilibrium point that can change over a narrow range that is compatible with maintaining life c. an equilibrium change that balances external and internal environment such that values of each are equated 2) Anabolism is the a. breakdown of matter. b. expulsion of matter. c. synthesis of matter. d. All of the answers are correct. 3) The sum
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Unit 5 task 3 (P5 M2 D2) – explain the concept of homeostasis‚ discuss the probable homeostatic response to changes in the internal environment during exercise‚ how homeostatic mechanisms control temperature‚ breathing and heart rate and evaluate the importance of homeostasis in maintaining healthy functioning of the body. Homeostasis Homeostasis is the maintenance of a constant internal environment in organisms. It involves volume of blood and tissue fluid within restricted limits‚ it also maintains
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Introduction “Homeostasis refers to the ability of the body or a cell to seek and maintain a condition of equilibrium or stability within its internal equilibrium when dealing with external changes” (2). “Homeostasis keeps the body’s environment under control and keeps the conditions right for cells to live and function. Without the right body conditions‚ certain processes (e.g. osmosis) and proteins (e.g. enzymes) will not function properly” (1). Thermoregulation is the process that allows the cyclists
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