Mammalian Kidney Parameter Identification/Description/Enumeration Major regions of the kidney Bowman’s capsule and glomerulus (structure & function) Nephron tubule (structure & function) Other excretory structures and their respective functions
Q: Where does filtration occur? the glomerulus the proximal convoluted tubule the…
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Q: The actions of these nephron structures ________ make possible the process of countercurrent…
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Q: Describe the four functional regions of the mammalian kidney.
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Q: Draw a well labelled diagram of a mammalian kidney tubule(nephron) and its blood supply.
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Q: Why is there a need to modify the ultrafiltrate along the tubules of the mammalian kidney?
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. Mammalian Kidney
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Parameter |
Identification/Description/Enumeration |
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Major regions of the kidney |
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Bowman’s capsule and glomerulus (structure & function) |
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Nephron tubule (structure & function) |
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Other excretory structures and their respective functions |
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- Excretory System of the Toad, Rhinella marina Parameter Identification/Description/Enumeration Shape of kidney Position/location of the kidney Type of kidney and its evolutionary significance Accessory structure(s) and their function(s)Discuss (compare & contrast) the following types of kidney; Illustrate using a diagram; Label its parts and ducts. Kidney of anamniotes and opisthonephrosNephridium of the Bivalve of mussels Parameter Identification/Description/Enumeration Shape of kidney Position/location of the kidney and its functional significance Filtering unit of the kidney
- Describe (and label on a diagram) the organs of the mammalian urinary system and give the functions of each.Discuss (compare & contrast) the following types of kidney; Illustrate using a diagram; Label its parts and ducts. The ancestral kidney and holonephrosMatch the structure of the nephron to its primary function. Renal corpuscle Proximal tubule Loop of Henle Distal tubule Collecting duct responsible for size-selective filtration of the blood responsible for active transport and reabsorption of ions and nutrients as well as the reabsorption of water may or may not reabsorb sodium ions depending on the presence or absence of the hormone aldosterone. establishes a strong osmotic gradient allowing the reabsorption of water, sodium ions, and chloride ions. regulates reabsorption of water in response to the presence of ADH & secretes urea into the interstitial fluid to maintain the osmotic gradient of the medulla.
- Please define/describe the following 3 renal functions in mammals: filtration, reabsorption and secretion. Describe at least one location in the nephron where each of these functions takes place. How does each of these functions contribute to homeostasis of the organism?Illustrate the vertebrate kidney and its parts, including its ducts.Describe what happens during the following stages in urine forma-tion in the mammalian nephron: filtration, tubular reabsorption, tubular secretion.
- Match correct function with regions of the nephron. Region of Nephron Function V Filtration of blood to make filtrate. Mainly selective tubular reabsorption of glucose, amino acids, Na then CI, H,0 follows by v osmosis. Reabsorption of bicarbonate. Also tubular secretion of NH, and H; tubular secretion of drugs (e.g. penicillin). v To create and maintain the concentration gradient across the medulla. v Impermeable to NaCl, permeable to H,0. Water leaves filtrate (in response to concentration of surrounding interstitial fluid) as it descends making the filtrate more concentrated. v Impermeable to H,0, Na is pumped out of the tubule, (CI follows) so filtrate becomes less concentrated as it ascends. H2O reabsorption depending on ADH. Tubular secretion of NH", K and H depending on need. Reabsorption or secretion of bicarbonate depending on need. Loop of Henle (descending limb) V Reabsorption of H2O depending on levels of ADH. Loop of Henle (descending limb) Loop of Henle (as a unit) Loop…Nephron Describe the phsiology of the nephron. Explain the function of each structure and how the composition of the urine changes from the Bowmans capsule to the collecting duct. How does the function of nephron differ when the animal has an excess of water, as opposed to when it is dehydrated? How do hormones help regulate the physiology of the nephron? Why is the nephron so highly vascularized?Describe the functions of the urinary system. Identify the 4 organs of the urinary system. What is a nephron? Describe the gross anatomy of the kidneys Trace the blood flow (listed vessels only) from Abdominal Aorta to Inferior Vena cava. Describe the structure of the Glomerulus (Renal Corpuscle). Trace the flow of filtrate through the nephron. Identify which nephron parts are in the cortex and which are in the medulla of kidney. Describe the anatomy (layers and tissues) and the functions of the ureter, urinary bladder, and the urethra. Describe the following nephron functions and identify the specific nephron structures where these processes occur. Filtration – Reabsorption – Secretion - Identify the specific structure in the nephron and the process that occurs for each listed substance: Process: filtered, not filtered, reabsorbed, secreted. Substances = water, Na+, K+, H+, Bicarbonate (HCO3-), Cl-, Ca2+, urea, ammonia (NH3 or NH4+), glucose, protein, amino…