ENDOCRINE SYSTEM The endocrine system helps regulate and maintain various body functions by synthesizing (making) and releasing hormones‚ chemical messengers. The endocrine system is composed of glands that release their hormones directly into the bloodstream for chemical signaling of target cells. Endocrine glands do not have a duct system and are called ductless glands. These glands release hormones directly into the blood or lymph. These glands include the pituitary gland‚ the pineal gland
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Lab 28B: Endocrine System Physiology Computer Simulation Introduction The endocrine system is the second greatest control system of the body and has many effects on the tissues and organs. The thyroid gland‚ which is a part of the endocrine system‚ releases a hormone that maintains metabolism. This hormone is thyroxine. Thyroxine production is controlled by thyroid stimulating hormone‚ which is released by the pituitary gland. TSH stimulates the thyroid gland to produce thyroxine. In
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Exercise 4: Endocrine System Physiology: Activity 2: Plasma Glucose‚ Insulin‚ and Diabetes Mellitus Lab Report Pre-lab Quiz Results You scored 80% by answering 4 out of 5 questions correctly. 1. Which of the following statements is false? Your answer : c. Insulin decreases plasma glucose levels. Correct answer: d. Insulin is a hormone secreted into the stomach to aid with starch digestion. 2. Which of the following statements is true? You correctly answered: d. All of these statements are true. 3
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Chapter 20: DNA Technology Biotechnology: Use of living organisms to perform tasks. * Wine & cheese * Selective breeding * Antibiotic production * Recombinant DNA Restriction Enzymes * Bacterial enzymes: cut up foreign DNA * Specific: only but at recognition sequences * Palindromic: cut at the same base sequence on each strand‚ but in the opposite direction * The exposed bases provide “sticky ends” * H-bond to compliment bases of segments cut with same restriction
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Biochemistry Essential Elements of Life Carbon‚ hydrogen‚ oxygen‚ nitrogen (96%) Calcium‚ phosphorus‚ potassium‚ sulphur (4%) Isotopes Atoms of an element that differ in neutrons Radioactive isotopes decay spontaneously‚ giving off energy Cohesion Hydrogen bonds hold water molecules together Adhesion is an attraction between two substances Surface tension measures how hard it is to break the surface tension of a liquid Hydrocarbons Organic molecules consisting of only carbon
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Lab 1 – Exercise 4: Endocrine System Name: Kathryn Marso ACTIVITY 1: Metabolism and Thyroid Hormone Part 1: Chart 1: Effects of Hormones on Metabolic Rate | | Normal Rat | Thyroidectomized Rat | Hypophysectomized Rat | BaselineWeightMl O2 used in 1 minuteMl O2 used per hourMetabolic ratePalpation results | 250.9 grams 7.1 ml 426 ml 1697 ml O2/kg/hr | 245.7 grams 6.2 ml 372 ml 1514 ml O2/kg/hr | 244.6
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HOMEOSTASIS BIOLOGY I BIO091 Prepared by: Nur Syakireen Bt. Ishak SCOPE •Definition and importance of homeostasis •Homeostatic organ •Negative and positive feedback mechanisms •Blood-glucose regulation •Thermoregulation •Osmoregulation DEFINITON & IMPORTANCE OF HOMEOSTASIS Homeostasis • Homeostasis: • is the steady state of physiological condition of the body. • it is the physiological processes by which organisms maintain a constant & balanced internal environment. • In achieving
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Biology has been the most interesting and appealing subject I have taken. Taking the course as a freshman‚ and the AP course as a junior‚ has really influenced my choice of a potential major. The course taught me how to be more studious and efficient with the information I retain. It is a puzzle‚ in which you piece together process by process‚ step by step. AP Biology also enhanced my collaboration skills. The course is very rigorous and challenging‚ and I struggled often trying to do it all by myself
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It is amazing how some systems in our body works together in situations to help us to have the ability to react and be alert of our surroundings such as being in danger or suffering from stress which is an important factor of many health problems. The two systems that I am referring to are the endocrine and nervous systems. they help to regulate our bodies back to our normal state to help to maintain healthy functioning. There are two systems that work with one another to signal the brain when something
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HSC Biology 9.4 The Search for Better Health 9.4-6 You have been looking at the different types of diseases that affect the human body and the natural defence mechanisms that maintain health. In this last part of the module you will look at how increased understanding has led to the development of a wide range of strategies to prevent and control disease. In this part you will have the opportunity to: • discuss the role of quarantine in preventing the spread of disease and plants and animals
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