Excretory System
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| Anitdiuretic Horomone | is a amino acid peptide secreted from the posterior pituitary, so more water is reabsorbed back into blood. So amount of urine is smaller and more concentrated.
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| Adrenal Cortex | mediates the stress response through the production of mineralocorticoids
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| Afferent and Efferent Arterioles | brings blood to the glomeruli, and the efferrent arteriole takes blood away
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| Aldosterone | a steroid hormone produced by the outer sectionof the adrenal cortex in the adrenal gland
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| Bowmans Capsule | A sac at the beginning of the tubular component of a nephron
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| Collecting Duct | system of the kidney consists of a series of tubules and ducts that connect the nephrons to the ureter
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| Golmerulus | located in the olfactory bulb of the brain where synapses form between the terminals of the olfactory
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| Homeostasis | Functions staying the same.
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| Hypothalamus | a portion of the brain that contains a number of small nuclei with a variety of functions.
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| Kidney | Removes waste products from blood and produce urine.
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| Loop of Henle | long, U-shaped portion of the tubule that conducts urine within each nephron of the kidneys
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| Metabolic Waste | substances left over from excretory processes, which cannot be used by the organism
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| Nephron | the basic structural and functional unit of the kidney
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| Nitrogenous Waste | are substances left over from excretory process
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| Osmotic Gradient | the difference in concentration between two solutions on either side of a semipermeable membrane
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| Peritubular Capillary Network | tiny blood vessels that travel alongside nephrons allowing reabsorption and secretion between blood
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| Posterior Pituitary | comprises the posterior lobe of the pituitary gland which is part of the endocrine system.
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| Pressure filtration | approximately 20 percent of the blood gets filtered under pressure through the walls of the glomerular capillaries and Bowman's capsule.
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| Proximal and Distal Convoluted Tubules | is a portion of kidney nephron between the loop of Henle and the collecting duct system.
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| Reabsportion of Water | Water gets reabsorbed passively by osmosis in response to the buildup of reabsorbed Na in spaces between the cells that form the walls of the nephron.
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| Renal Cortex | outer portion of the kidney between the renal capsule and the renal medulla.
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| Renal Medulla | the innermost part of the kidney
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| Renal Pelvis | the funnel-like dilated proximal part of the ureter in the kidney
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| Selective Reabsorption | takes place in the proximal convoluted tubule (PCT) of the kidney. It is the process by which certain substances that the body needshave been filtered out of the blood during ultrafiltration, are reabsorbed.
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| Tubular Excretion | Tubular secretion is the reverse process of tubular reabsorption
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| Urea | a chemical compound found in urine
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| Ureter | tubes made of smooth muscle fibers that take urine from the kidneys to the urinary bladder
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| Urethra | a tube that connects the urinary bladder to the genitals for the removal of fluids from the body
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| Urinary Bladder | the organ that collects urine excreted by the kidneys before disposal by urination
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| Urine | A liquid by-product of the body secreted by the kidneys through a process called urination
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| PH | The measurement of hydrogen ion concentration. The more Hydrogen ions the more acidic and lower the number.
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