Module 12: Renal Anatomy Flashcards
Renal system deals with what primarily?
Fluid balance in the body:
-regulation of metabolic waste
-regulation of body water and acid-base balance.
-blood pressure
-regulation of electrolytes
-Excretion of drugs and poisons
4 systems involved with the Renal system
Urinary: Kidneys
Integumentary: Skin (sweat glands)
Respiratory: Lungs
Digestive: Intestine.
What excretions does the urinary system manage?
Nitrogen compounds
Toxins
Water
Electrolytes
What excretions does the Integumentary system manage?
Nitrogen compounds
Electrolytes
Water
What excretions does the respiratory system manage?
CO2
Water
What excretions does the Digestive system manage?
Digestive wastes
Bile pigments
Salts of heavy metals
Kidney function
Process plasma and excrete urine
What do the kidneys control concentrations of?
Sodium
potassium
chloride
nitrogen wastes
Urine formation
Filtration
Reabsorption
secretion
How do kidneys control pH?
excretion of H+
What is the renin-angiotensin system?
A system that regulates blood pressure in the renal, cardiac, and vascular physiology.
i.e managing hypertension, heart failure, and renal disease
How does the renin-angiotensin system work when: blood pressure drops?
It increases water and electrolyte reabsorption in the kidney.
thus, it compensates for the drop in blood volume, increasing blood pressure.
How does the renin-angiotensin system work when:
Blood pressure is too high?
ANP is secreted by cardiac muscles -> reduction of blood volume -> reduced blood pressure.
TLDR: Can result/cause in inflammation/constriction.
Kidney function: two types of hormone secretion.
-Erythropoietin
-Calcitriol and renin
What does erythropoietin (EPO) do in the kidneys?
Stimulates red blood cell production.
The lower the PO2, the greater the production of EPO.
