Biology exam Endocrine system: Hormones: chemical messengers that coordinate the body’s activates. Substances secreted by cells that act to regulate the activity of other cells in the body. They are part of the endocrine system and they are slow acting but have a longer affect than neurotransmitters. Functions: * regulate growth‚ development‚ behavior‚ and reproduction. * Maintain homeostasis * Regulate metabolism and water and mineral balance * Respond to external stimuli
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in the brain. Discovered in 1975 endorphins are one of several substances in the brain that resemble morphine. These substances were referred to as opoids. The polypeptide endorphin contains thirty amino acid units. Opoids are considered stress hormone like corticotrophin‚ cortisol‚ and catecholamines (adrenaline‚ nonadrenaline)‚ and are created by the body to reduce stress and pain levels. Endorphins are usually produced during periods of extreme stress and naturally block pain signals produced
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Homeostatic Imbalances Homeostasis is the maintenance of relatively stable conditions within the body. This process‚ controlled through feedback systems‚ ensures that the body’s internal environment remains stable despite changes in the external environment. Feedback systems are composed of a receptor‚ a control center‚ and an effector. When one or more of the components do not function properly the body is placed in a state of homeostatic imbalance. This condition can range in severity‚ but
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(specially‚ when a person is not engage with a proper diet and exercise) will clog into our veins. If that happens‚ the blood flowing through our veins will not flow very well through the streams. “Food produces hormonal effects in the body. Some hormones say ‘Store that fat’; others say ‘build muscle.’ Study after study shows that diets based on the same amount of Calories‚ but different proportions of fat‚ protein and carbohydrates‚ result in different amounts of weight loss.” -Jonny Bowden
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children and their movement. The muscles are poorly developed‚ including the inner muscles. In the period of puberty (age 10-14 for girls and 10-16 for boys) more differences between girls and boys appear. First of all‚ under the influence of gender hormones the secondary sexual characters develop: girls experience breast growth
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Teenagers today are living in a high technology environment. They could easily access to information just by sitting down in front of the laptop and having a better education system. So‚ we can see that children above the age of 15 today seem like having a greater knowledge and confidence if compared to the children in old days that look silly and know nothing. But with the age of only slightly above 15 they do not have emotional maturity or enough experience to take important decisions. During
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The hormone that raises blood sugar level is insulin. FALSE Atrial natriuretic peptide is a hormone that controls blood pressure in part by increasing the urinary excretion of sodium. FALSE Oxytocin and ADH are produced in the posterior pituitary? FALSE Aldosterone is the most potent mineralocorticoid produced by the adrenals but the least abundant? FALSE Mylocytotic leukemia involves a condition of lymphocytes? FALSE All lymphocytes are leukocytes‚ but not all leukocytes are lymphocytes? TRUE
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Three Stress Hormones Life is full of mystery‚ a journey that is full of twists and turns‚ ups and downs‚ that can sometime lead to depression or your simple happiness. But like all journeys there are obstacles that could go on your way and stop you to reach your personal goal. Various situations where one is unable to deal with this turns‚ let alone have the courage to face its ups and downs. Stress is no stranger to our lives. The term stress can be utilized in several approaches because stress
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(CALCITRIOL) INTRODUCTION: Bioactive vitamin D or calcitriol is a steroid hormone that has long been known for its important role in regulating body levels of calcium and phosphorus‚ and in mineralization of bone. More recently‚ it has become clear that receptors for vitamin D are present in a wide variety of cells‚ and that this hormone has biologic effects which extend far beyond control of mineral metabolism. Vitamin D is thus not a true vitamin‚ as
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through studies‚ different types of prevention methods such as hormone replacement therapy (HTR)‚ multivitamin‚ neuroprotectin supplementation. Revised paragraph Two authors‚ Zandi et. al and Pagaini-Hill‚ focus on Hormone Replacement Therapy as an effective preventive procedure to lessen the higher rate of AD in Women. According to Zandi et al.‚ basic neuroscience findings suggest that by replacing certain hormones through HTR (Hormone replacement therapy) as well as implementing minerals such as
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