Ace Your Genitourinary (Renal) System Classes and Exams with Picmonic: #1 Visual Mnemonic Study Tool for Medical (MD/DO) Students
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Genitourinary (Renal) System | Medical (MD/DO) School Study Aid
Plasma Solutes and Other Small Molecules Become Ultrafiltrate
Bowman's Capsule Encapsulates Glomerulus
2 mins
Proximal Tubule
Characteristics
Na+ Reabsorbed Via Active Transport
Water Follows Na+
Most Of Glucose Reabsorbed
Most Of Amino Acids Reabsorbed
Bicarbonate Exchanged For H+
Drugs and Toxins Excreted
Filtrate Osmolarity Same As Plasma
Leads To Loop Of Henle
2 mins
Loop of Henle
Characteristics
Descending Limb
Water Follows Na+
Medullary Hypertonicity
Increased Water Reabsorption
Vasa Recta
Na+ Reabsorbed Via Active Transport
Ascending Limb
Reabsorbs Na+, K+, Cl-
Decreased Concentration of Filtrate
Impermeable to Water
Distal Tubule
2 mins
Distal Tubule
Characteristics
Hormonally Regulated
Aldosterone Causes Na+ Reabsorption
Na+ Reabsorbed Via Active Transport
Water follows Na+
Parathyroid Hormone Causes Ca2+ Reabsorption
Leads to Collecting Duct
1 min
Collecting Duct
Characteristics
Na+ Reabsorption via Passive Transport
Vasopressin Causes Water reabsorption
Concentrates Filtrate
2 mins
Renin Angiotensin Aldosterone System (RAAS) Regulators
Activators
Hypotension
Hypovolemia
Decreased NaCl Delivery to Macula Densa
Sympathetic Stimuli
Key Mediators
Angiotensin II
Aldosterone
Antidiuretic Hormone
Negative Feedback
Atrial Natriuretic Peptide and Brain Natriuretic Peptide
2 mins
Angiotensin II Effects
Effects On Vasculature
Increases Vascular Smooth Muscle Contraction
Increases Blood Pressure
Effects on Kidney
Efferent Arteriole Vasoconstriction
Increases GFR
Proximal Tubule
Sodium and Water Reabsorption
Adrenal Cortex
Increases Aldosterone Secretion
Effects on CNS
Stimulates Posterior Pituitary Gland to Secrete Vasopressin (ADH)
Stimulates Thirst in Hypothalamus
2 mins
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