🧠 Step 8 — Student Memory Support
This final section is designed for rapid revision, memory strengthening, and last-day exam preparation. Use it after completing the topic to recall high-yield facts quickly.
🎯 How to Use This Section
- Revise flashcards for quick recall.
- Use mnemonics to remember lists.
- Review memory tables for comparison-based questions.
- Read clinical hooks before exams.
- Mark the topic complete after revision.
🃏 1️⃣ High-Yield Flashcards
What is the main function of the fundus and body of the stomach?
Which part of the stomach is mainly responsible for grinding food?
What is the normal frequency of basic electrical rhythm in the stomach?
Which cells act as pacemakers in the stomach?
What is the pyloric pump?
What is retropulsion?
Which factor is the strongest promoter of gastric emptying?
Which hormone most strongly slows gastric emptying in response to fats?
Which reflex slows gastric emptying when the duodenum is overloaded?
Which hormone is released in response to acidic chyme in the duodenum?
Which nerve increases gastric motility?
Which nervous system decreases gastric motility during stress?
🧠 2️⃣ Mnemonics
2️⃣ Mnemonics
Mnemonic Title: Duodenal Factors Slowing Gastric Emptying
Mnemonic Word:
DAFH
Meaning:
D — Distension
A — Acid
F — Fat
H — Hyperosmolar chyme
Mnemonic Title: Hormones Slowing Gastric Emptying
Mnemonic Word:
CSG
Meaning:
C — CCK
S — Secretin
G — GIP
Mnemonic Title: Gastric Regions and Functions
Mnemonic Word:
“Store–Grind–Gate”
Meaning:
Store — Fundus & Body
Grind — Antrum
Gate — Pylorus
📋 3️⃣ Memory Tables
Table 1 — Gastric vs Duodenal Control of Emptying
| Feature | Gastric Control | Duodenal Control |
|---|---|---|
| Main Role | Promotes emptying | Inhibits emptying |
| Key Stimulus | Gastric distension | Acid, fat, osmolarity |
| Major Reflex | Vago-vagal reflex | Enterogastric reflex |
| Hormones | Gastrin | CCK, Secretin, GIP |
| Functional Goal | Push chyme forward | Protect duodenum |
Table 2 — Parasympathetic vs Sympathetic Effects
| Feature | Parasympathetic | Sympathetic |
|---|---|---|
| Nerve | Vagus nerve | Sympathetic fibers |
| Motility | Increases | Decreases |
| Pyloric Tone | Decreases | Increases |
| Gastric Emptying | Promotes | Inhibits |
⚡ 4️⃣ Rapid Revision Points
Must Remember
• Fundus stores food; antrum grinds food.
• Basic electrical rhythm = 3 waves/minute.
• Interstitial cells of Cajal act as pacemakers.
• Pyloric pump produces strong antral contractions.
• Retropulsion improves mechanical digestion.
• Pylorus regulates rate of gastric emptying.
• Gastric distension promotes gastric emptying.
• Fat is the strongest inhibitor of gastric emptying.
• Enterogastric reflex slows gastric emptying.
• CCK is the most powerful hormonal inhibitor.
• Secretin is released in response to acid.
• Sympathetic activity slows gastric motility.
🩺 5️⃣ Clinical Memory Hooks
Clinical Hook 1:
Diabetic gastroparesis → Vagal nerve damage → Delayed gastric emptying.
Clinical Hook 2:
Pyloric stenosis → Narrowed pylorus → Projectile vomiting.
Clinical Hook 3:
Post-gastric surgery → Loss of pyloric control → Rapid gastric emptying.
Clinical Hook 4:
High-fat meal → CCK release → Slow gastric emptying.
Clinical Hook 5:
Duodenal ulcer → Acid entry into duodenum → Enterogastric reflex activation