the urinary system is made up of what structures - Answers kidney ureter urinary bladder and
urethra
what is the major function of the urinary system - Answers excretion
kidney functions - Answers excretion
regulation of blood volume and pressure
regulation of blood solute concentrations
regulation of extracellular fluid
regulation of red blood cell synthesis
regulation of vitamin D synthesis
where are the kidneys located - Answers behind the peritoneum
kidneys are organzied into two major regions - Answers cortex and medulla
urine goes from the kidney through the ureter to the - Answers bladder
what is the function unit of the kidney - Answers nephron
what are the 4 regions of the nephron - Answers renal corpuscle, proximal convoluted tubule, loop of
Henle, distal convoluted tubule
what is the renal corpuscle - Answers glomerulus and bowmans capsule
two types of nephrons - Answers juxtamedullary and cortical nephrons
what are teh 3 major processes of urine formation - Answers filtration
tubular reabsorption
tubular secretion
filtration - Answers in the cortex,
only things that fit through the filtration membrane stay
goes in througgh afferent artery and comes out through efferent artery
tubular reabsoption - Answers - movement of water and solutes from the filtrate back into the blood
(Waste products, excess solutes, small amounts of H2O remain in filtrate)
what hormonal mechanisms are involved in regulating urine concentration and volume - Answers
renin angiotensin system (blood pressure)
adh mechanism (blood pressure)
anh mechanism (blood conc)
Renin-Angiotensin-Aldosterone System (RAAS) - Answers Hormonal system regulating blood pressure
and fluid balance.
Antidiuretic Hormone (ADH) mechanism - Answers Mechanism that is a first line defense against
hypovolemia
ANH Mechanism (Atrial Natriuretic Hormone) - Answers increased sodium exctretion and increased
water loss results in decreased BP
needed when BP is too high
ureters - Answers The tubes that carry urine from the kidneys to the bladder.
which sphincter allows for voluntary flow of urine - Answers the external urethral sphincter
the internal one is smoothmuscle (not voluntary)
Micturition Reflex - Answers relaxation of the urethral sphincter in response to increased pressure in
the bladder
what accounts for more of the bodys fluid composition - Answers intracellular fluid compartments
what two mechanisms regulate the levels of ions in the extracellular fluid - Answers thirst regulation
ion concentration regulation
what ions are important for fluid regulation - Answers sodium potassium and calcium
what 3 hormones regulate blood levels of calcium - Answers parathyroid hormone
vitamin d and calcitonin