Medical School MD + DO Mastery

A 4-year, board-aligned study system for medical school and licensing exams.

Walk the full Year 1–4 curriculum — foundational sciences, organ-system blocks, clinical clerkships and advanced practice — each with mastery checklists and linked learning resources, plus a dedicated review system for school exams, Shelf/COMAT, USMLE Step 1–3 and COMLEX-USA Levels 1–3.

GI / LIVER / NUTRITION

YEAR 2 | PAGE 23E - MOTILITY, DIGESTION / ABSORPTION + NUTRITION PHYSIOLOGY

BUILD THE NORMAL GI MODEL BEFORE THE DISEASE LIST

Organize normal function as MOTILITY / SECRETION -> DIGESTION -> ABSORPTION -> PORTAL / LYMPHATIC TRANSPORT -> HEPATIC PROCESSING. For every nutrient, predict what happens when acid, pancreatic enzymes, bile, mucosa or transporters fail.

A. DEEP GI PHYSIOLOGY + NUTRITION VIDEOS - DIRECT & PLAYABLE

#VideoTimeWhyLink
1.GI Secretory / Regulatory Physiology - Dirty Medicinehigh-yield physiologyIntegrated gastrin, histamine, acid, secretin, CCK, GIP and pancreatic/biliary regulation; efficient bridge from normal physiology into pharmacology.Open →
2.GI Motility of the Small Intestine - Ninja Nerddeep conceptSegmentation, peristalsis, migrating motor complex, enteric control and hormonal regulation; useful for obstruction and motility disorders.Open →
3.GI Motility of the Large Intestine - Ninja Nerddeep conceptHaustral contractions, mass movements, gastrocolic reflex and neural control; connect colonic physiology to diarrhea/constipation patterns.Open →
4.Digestion & Absorption of Carbohydrates - Ninja Nerddeep conceptAmylases, brush-border enzymes, SGLT1/GLUT5/GLUT2 and clinical consequences of carbohydrate malabsorption.Open →
5.Digestion & Absorption of Proteins - Ninja Nerddeep conceptPepsin, pancreatic proteases, enterokinase/trypsin activation and amino-acid/peptide transport into portal blood.Open →
6.Digestion & Absorption of Lipids - Ninja Nerddeep conceptBile salts, pancreatic lipase/colipase, micelles, chylomicrons and enterohepatic circulation - core for steatorrhea and fat-soluble vitamin questions.Open →

A. DEEP GI PHYSIOLOGY + NUTRITION VIDEOS - DIRECT & PLAYABLE — GI / NUTRITION CLOSED-BOOK CHECK

  • Rebuild the sequence from ingestion -> gastric processing -> pancreatic/biliary secretion -> intestinal digestion/absorption -> portal/lymph transport.
  • Predict the nutrient/lab deficiency produced by gastric, pancreatic, biliary, ileal or diffuse mucosal failure.
  • Distinguish osmotic vs secretory diarrhea, maldigestion vs malabsorption, and fat/carbohydrate/protein consequences from mechanism.
  • Keep vitamins and micronutrients integrated with disease context, not as an isolated memorization list. VIDEO-FIRST | SCHOOL-EXAM + BOARD-EXAM MASTERY