Ace Your First Aid for the USMLE Step 1 (2021) Classes and Exams with Picmonic: #1 Visual Mnemonic Study Tool for Physician Assistant (PA) Students
With Picmonic, facts become pictures. We've taken what the science shows - image mnemonics work - but we've boosted the effectiveness by building and associating memorable characters, interesting audio stories, and built-in quizzing. Whether you're studying for your classes or getting ready for a big exam, we're here to help.
First Aid for the USMLE Step 1 (2021) | Physician Assistant (PA) School Study Aid
Oral Cavity
- Characteristics
- Mouth
- Mechanical Digestion
- Salivary Amylase Begins Carbohydrate Breakdown
- Lingual Lipase Begins Lipid Breakdown
- Esophagus
- Bolus
- Peristalsis
1 min
Stomach Digestion
- Characteristics
- Chief Cells Secrete Pepsinogen
- Pepsinogen Turned to Pepsin By H+
- Protein Breakdown Begins
- Mucous Cells Secrete Mucus and Bicarbonate
- G Cells Secrete Gastrin
- Gastrin Stimulates Parietal Cell HCl Release
- Parietal Cells Secrete Intrinsic Factor
2 mins
GI Absorption
- Stomach
- Alcohol
- Duodenum
- Iron
- Jejunum
- Folate
- Terminal Ileum
- Vitamin B12
- Bile Resorption
1 min
Small Intestine Digestion
- Brush border enzymes
- Pancreatic Enzymes are secreted via a Duct
- Pancreas secretes bicarbonate
- Brush Border activates Pancreatic Trypsin
- Trypsin activates Chymotrypsin
- Trypsin and Chymotrypsin digest Proteins
- Gallbladder Releases Bile
- Pancreatic Lipase breaks down Lipids
- Goblet cells secrete mucus
- Pancreatic Amylase breaks down Carbohydrates
- Pancreatic Nucleases breakdown DNA/RNA
- Digestion occurs in the Duodenum
2 mins
Small Intestine Absorption
- Characteristics
- Carbohydrates Undergo Active Transport
- Amino Acids Undergo Active Transport
- Small Lipids Undergo Passive Diffusion
- Epithelial Cells
- Intestinal Capillaries
- Hepatic Portal Transports Nutrients
- Liver
- Large Lipids Transported as Chylomicrons
- Lacteals Transport Chylomicrons
2 mins
Pancreas
- Characteristics
- Acinar Cells Release Digestive Enzymes
- Ductal Epithelial Cells Release Bicarbonate
- Islets of Langerhans
- Beta Cells Release Insulin
- Alpha Cells Release Glucagon
- Delta Cells Release Somatostatin
- Somatostatin Inhibits Alpha and Beta Cells
3 mins
Large Intestine
- Characteristics
- Colon
- Electrolyte Reabsorption
- Water Reabsorption
- Microflora Produce Vitamins
- Rectum Stores Feces
1 min
Somatostatin
- Secreted by D Cells
- Pancreas
- GI Tract
- Action
- Decrease Secretion of Gastric Acid and Pepsinogen
- Decrease Pancreatic and Small Intestine Fluid Secretion
- Decrease Gallbladder Contraction
- Decrease Glucagon and Insulin Secretion
- Regulation
- Secretion is Increased by Acid
- Secretion is Decreased by Vagal Stimulation
- Clinical Use
- Octreotide
- Carcinoid Syndrome
- Variceal Bleeds
2 mins
Cholecystokinin (CCK)
- Secreted by I Cells
- Duodenum and Jejunum
- Physiology
- Increase Pancreatic Secretions
- Increase Gallbladder Contraction
- Induce Relaxation of Sphincter of Oddi
- Decrease Gastric Emptying
- Regulation
- Increased by Fatty Acids and Amino Acids
1 min
Insulin Regulation
- Master Regulator
- Glucose
- Incretins Released with Oral Glucose
- GLP-1
- GIP
- Positive Regulators
- Beta-2 Receptor Stimulation
- M3 Acetylcholine Receptor Stimulation
- Negative Regulators
- Alpha-2 Receptor Stimulation
- Somatostatin
2 mins
