Renal Anatomy and the Urogenital System Flashcards
What are the 3 components of the kidney we discussed?
Renal Cortex, Renal Medulla, Renal Pelvis
(collect my pee)
What are the functions of the kidney?
Volume of blood, Concentration of ions, pH, Metabolic, Excretion, Endocrine
(very cool pigeons migrate east excitedly)
What is the functional unit of the kidney?
Nephron
How many total nephrons are in the both kidneys?
Millions
What is the importance of the nephron?
Filters blood
What are the 3 steps the nephron does?
Filtration, Reabsorption, and Secretion
(fun, renal, stuff)
What is the difference between reabsorption and secretion?
Reabsorption puts substances back into the bloodstream and secretion removes substances from the body
Where does most of the reabsorption occur?
Proximal Convoluted Tubule (PCT)
How much filtrate is produced per minute?
about 120 mL/min
How much urine is produced per day?
2 L
Define filtration, reabsorption, and secretion
Filtration: filters water, ions, and small particles in the nephron
Reabsorption: take substances that you do to want to lose out of the nephron and puts them back into the bloodstream
Secretion: put waste and other substances directly into the nephron do they can be removed from the body
What percentage of filtrate is reabsorbed in the various locations of the nephron?
99%
What nervous system innervates the kidneys and how does it impact the kidney function?
Sympathetic nervous system
It impacts blood pressure, urine production, and sodium reabsorption
Why does aldosterone get released?
It is released when there is decreased sodium, increased potassium, and increased angiotensin 2
What does aldosterone do?
increases sodium absorption and potassium excretion which you pee out
It also increases blood pressure and blood volume
