Valley: Renal Functions Flashcards
—— are 90% of total osmolality of the extracellular fluid
Sodium salts
When we talk about regulating osmolality, we are talking about regulating — concentration
sodium
Normal osmolality is about — mOsm/l
300 ; 270-310
Conservation of non-ionic components of plasma: (5)
Glucose, amino acids, proteins, water, vitamins
Excretion of non-volatile end-products of metabolism: (6)
HP042-, Urea, Uric Acid, S042-, Creatinine, Lactic Acid
Maintenance of extracellular fluid volume is achieved by controlling — and — excretion
salt (NaCI) and water
3 Endocrine functions:
Erythropoietin, renin-angiotensin system, vitamin D
Renal hormone that acts on bone marrow and stimulates red blood cell production
Erythropoietin
the patient with chronic renal disease is anemic because there is a deficiency of —.
erythropoietin
Enzyme-hormone system that participates in blood pressure regulation, potassium excretion,
and sodium excretion
Renin-angiotensin system
The kidney converts — to its physiologically active form (Vitamin D3)
vitamin D
The patient with chronic renal disease becomes — because calcium absorption from the intestine is impaired when there is a deficiency of
vitamin D.
hypocalcemic
About —% of the total quantity of blood pumped by the heart each minute, or —liters/min, passes
through the kidneys.
25 ; 1.25
As it turns out, the kidneys re-work the extracellular fluid about once every two —, thereby maintaining its composition and volume.
hours
dialysis machines are capable of re-working the extracellular space of anephric (kidney-free) patients once every 8-12 —.
hours
Blood is delivered to the glomerulus via the — arteriole and exits the glomerulus via the — arteriole.
Afferent ; efferent
What are the two types of nephrons?
Cortical nephrons and juxtamedullary nephrons
Cortical nephrons have — loops of Henle and glomeruli located near the —.
Short ; surface of the kidney
Juxtamedullary nephrons have — loops of Henle and glomeruli located deep in the cortex near the —.
Cortical medullary junction
Blood passes through the —, the —, the —, and the — before it drains into the venous system.
Afferent arterioles ; glomerular capillaries ; efferent arterioles ; peritubular capillaries
The — branches into a capillary network that entwines the renal tubule.
Efferent arteriole
The — arise from the efferent arteriole and engulf the renal tubule.
Peritubular capillaries
The — are the peritubular capillaries of the loops of Henle of the juxtamedullary nephrons.
Vasa recta
The vasa recta constitute a — exchange system.
Countercurrent