Essay Reproductive system The reproductive system is a system of organs within an organism which work together for the purpose of reproduction. Hormones and pheromones are also important accessories to the reproductive system. The major organ of the reproductive system includes penis and vulva as well as a number of internal organs including the testicles and ovaries. Most other vertebrate animals have generally similar reproductive systems consisting of gonads‚ ducts‚ and openings. Human reproduction
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Know what the major sources of water intake and output are (see Figure 26.4 on page 994) 9. Know what the driving force for water intake is 10. Know which part of the brain functions greatly in water balance 11. Know what the mechanism of action of ADH (antidiuretic hormone) is and what triggers its release (see Figure 26.6 on page 996 and Figure 26.10 on page 1002) 12. Know what dehydration‚ hypotonic hydration‚ and edema are‚ what causes them‚ and their major symptoms 13. Know what electrolyte balance
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in Reabsorption -Mammalian’s kidney’s ability to conserve water is considered an important adaptation -Antidieretic hormone is important in osmoregulation -Made in hypothalamus and released when osmolarity in blood rises above certain point -ADH acts on the distal tubules and collecting ducts by increasing their permeability to water -Causes more water Reabsorption -Is turned off through negative feedback -Juxtaglomerulur apparatus located in the vicinity of the afferent arteriole‚ which
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You will then drink water so your body can gain more water in the blood to get back to the right water balance. When the osmoreceptors detect the change in osmotic pressure this increases the hormone ADH (antidiuretic hormone) which then causes the kidneys to retain some of the fluid‚ so the water level within the body can stay at the level it should. What are the consequences if the mechanism fails? If these mechanisms fail then you can become
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Nicola Cooper Student No; cs329513 What effect does alcohol have on a person’s health and life expectancy? The consumption of alcoholic beverages dates back to approximately 10‚000 years ago when viticulture’ (the selective cultivation of grape vines for making wine) is said to have originated in the mountains between the Black and Caspian Seas. (1) It is one of the most commonly used psychoactive drugs in the world. Alcohol interacts with gamma amino bultyric acid (GABA) receptors in the
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As long as you are alive‚ your body will constantly metabolize organic molecules and produce waste products. If you can not get rid of these metabolic waste products‚ they will accumulate to toxic levels and poison your body. The urinary system is very important because it perform the essential function of getting rid of these metabolic wastes. Main Structures of the Urinary System The main structures that make up the urinary system are two kidneys (contains nephrons)‚ two ureters‚ one bladder‚ one
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Antidiuretic Hormone (ADH) – Causes kidneys to reduce water excretion; in high concentrations‚ raises blood pressure. Oxytocin (OT) – Contracts muscles in uterine wall and those associated with milk-secreting glands. Thyroid Gland – In front of trachea below larynx. Thyroxine
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Marijuana and Alcohol: Effects on the Body It shouldn’t be much of a surprise that alcohol and marijuana comprise the two most commonly abused drugs by young adults in America. But while many would ask why young adults use these drugs‚ it’s more important to understand how these drugs affect the body. What exactly do these drugs do to the body and how does the body process them? Are the effects always negative? Does the amount consumed make a significant difference? First I will give a brief history
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of the choices are correct. 3. Benign prostatic hyperplasia: A.is prostate cancer B.involves enlargement of the prostate‚ affecting the urethra C.must be treated with surgery D.occurs in both men and women 4. An increased amount of ADH leads to: A.an increased amount of urine B.a decreased amount of urine C.no change in the amount of urine D.kidney failure 5. How do the urinary and reproductive tract come into direct contact? A.In females the urethra joins with the vagina
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Final Study Guide-PSIO 36 questions Unit 1 1. Vena cava--right atrium--tricuspid valve--right ventricle--pulmonary valve--pulmonary artery--pulmonary vein--left atrium--bicuspid valve--left ventricle--aortic valve--aorta 2. SA node--AV node--AV bundle--right and left bundle branches--conducting myofibers (purkinje fibers) a. pacemaker cells in SA node spontaneously discharge action potentials at a rate of 100-120+ per minute *AP process: 1. depolarization due to na inflow when voltage gated
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