Chapter 26 Urinary Part 1 Flashcards
What is the major excretory system of the body that eliminates waste and excessive products
urinary system
Protein metabolism forms what kind of wastes
nitrogenous wastes
What is formed from Ammonia (NH3) turning into urea (less toxic)
urine
What are the 4 parts of the urinary system
kidneys
ureters
bladder
urethra
What is the unit that filters the blood and removes wastes, and forms urine
kidney
What is the actual part of the kidney that forms urine
nephron
What are the 4 components of urine
1 excess H2O
2 excess ions
3 metabolic wastes (urea)
4 toxic substances
What is the arterial supply for the kidneys
renal arteries (from aorta)
The venous supply from the kidneys goes into the renal veins which drains into the ____________
inferior vena cava
Which kidney sits slightly lower
right
The position of the kidneys is _________ (cavity in the back)
retroperitoneal
With contraction of the diaphragm, the kidneys move which way and how much?
down, 1 inch
What is the main function of the urinary system
maintain homeostasis
(h2o, fluid, and electrolyte balance)
What are 6 other functions of the urinary system?
1excretion
2 regulation of BV and BP
3 Regulation of blood solute concentrations
4 regulation of extracellular fluid pH
5 regulation of RBC synthesis
6 regulation of vitamin D synthesis
Which urinary system function involves the filtering of waste products
excretion
In excretion, the kidneys filter the bodys plasma volume how many times a day
60x/day
~200L of fluid
Which urinary system function involves the control of extracellular fluid of the body and in dependent on hydration
Regulation of BV and BP
Controlling Blood volume ultimately also controls ______ via urine production
blood pressure
What BP falls, ________ is produced to split angiotensinogen to angiotensin
renin
Which urinary system function involves the regulation of ion concentration
regulation of blood solute concentrations
What ions are regulated by the urinary system (7)
Na
Cl
K
Ca
HCO3
HPO4
urea
Which urinary system function involves the secretion of variable amounts of H+ to regulate pH and create acid-base balance
regulation of extracellular fluid pH
Which urinary system function involves erythropoietin causing cell synthesis in red bone marrow
regulation of RBC synthesis
Which urinary system function involves the control of blood Calcium levels
regulation of vitamin D synthesis