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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STUDY GUIDE FOR FINAL EXAM AP120 CHAPTER 16 Respiratory system (~20) 1) The atmosphere is composed of which gases? 78% nitrogen‚ 21% oxygen‚ .04 carbon dioxide Which gas is most abundant in the air you breath? Nitrogen 2) Define dypsnea – difficult or labored breathing‚ air hunger hyperventilation – breathing rapidly and deeply hypoventilation‚ cyanosis – a blueish color of the skin and mucous membranes and hypoxia – deficiency in the amount of oxygen reaching the tissues (oxygen levels are
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through the glomerulus 2. Reabsorb and secrete substances along tubular tract. 3. Form a filtrate (urine) that is protein free. 4. Regulate filtrate formation to maintain body fluid volume‚ electrolyte composition‚ and pH within limits. URINE FORMATION 1. Glomerular Filtration 2. Tubular Reabsorption 3. Tubular Secretion 4. Excretion GLOMERULAR FILTRATION ž This is the movement of fluid and solutes out of the glomerulus‚ across the
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urine. 5. How did increasing the efferent radius affect glomerular filtration rate? >> Increasing the efferent radius decreases the glomerular filtration rate. Increasing the efferent radius allows more blood drainage out of the glomerulus and that decreases the amount of blood to be filtered so the glomerular filtration rate will decrease. 6. How did decreasing the efferent radius affect glomerular filtration rate? >> Decreasing the efferent radius increases the
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511). The functional unit of the kidney‚ referred to as the nephron‚ is composed of both tubular components—Bowman’s capsule proximal tubule‚ loop of Henle‚ the distal tubule‚ and the collecting duct—and vascular components—afferent arteriole‚ glomerulus‚ efferent arteriole‚ and peritubular capillaries (Sherwood‚ 2007‚ p. 514). Through its vascular and tubular components‚ the nephron performs three basic functions in order to carry out its regulatory role in the kidney: glomerular filtration
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Oxide‚ NOS-Nitric Oxide Synthase The nephron‚ the functional unit of the kidney‚ is made of 2 parts: the renal corpuscle and the renal tubule. The renal corpuscle is composed of the glomerulus and Bowman’s capsule while the renal tubule extends from the Bowman’s capsule to the collecting duct. The glomerulus is a globular network of capillaries surrounded by Bowman’s capsule. Filtration occurs under pressure through the fenestrations in the capillary wall and through gaps between the podocytes
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step that occurs in the kidney deals with the nephron‚ which is the functional unit of the kidney. In the glomerulus the formation of urine begins with the passive filtration of plasma through the pores that are found in the glomerulus. The plasma is forced through these pores by hydrostatic pressure. The only things that determines if a molecule will pass through the pores of the glomerulus is it’s molecular weight. The lower the molecular weight‚ the easier it will pass through the pores. Another
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Blood Water Homeostasis or Osmoregulation Osmoregulation is the process by which the body regulated the osmotic pressure of any organism’s fluids in order to keep the homeostasis of the organisms’ water level constant. Therefore osmoregulation is used to keep the bodily fluid from being too diluted or too concentrated. An osmotic pressure is used to measure the ability of water to move from one solution to another solution through osmosis. Osmotic pressure refers to tendency for a liquid solution
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EXERCISE 9: RENAL SYSTEM PHYSIOLOGY Student instructions: Follow the step-by-step instructions for this exercise found in your lab manual and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Rename this document to include your first and last name prior to submitting‚ e.g. Exercise9_JohnSmith.doc. Please make sure that your answers are typed in RED. (You may delete these instructions before submission.) Grading:
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renal corpuscle consist of a ball of capillaries called glomerulus and enclosed by a fluid-filled capsule called Bowman’s capsule Glomerular Capillaries- this is another name for the renal corpuscle. An afferent arteriole supplies the blood to the glomerulus. The blood flows through the glomerular capillaries‚ protein-free plasma filters into the Bowman’s capsule‚ and known as the glomerular filtration. The afferent arteriole then drains glomerulus of the remaining blood. 6. Starting at the renal
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