MCAT 3B · Bio/Biochem
Organ Systems
537 original Anki flashcards, a 10-page illustrated study guide, a 3-page cheat sheet and 50 practice questions for MCAT content category 3B.
What is inside
- deck.apkg537 original Anki flashcards (280 short answer, 84 multiple choice, 70 cloze, 85 true/false, 18 image occlusion), 30 original diagrams
- guide.pdf10-page illustrated study guide that explains the ideas
- cheatsheet.pdf3 printable pages, US Letter at 100 percent
- questions.pdf50 original MCAT-style practice questions with explanations, including 3 passage-based sets
- README.txtimport steps
- 280 short answer
- 84 multiple choice
- 70 cloze
- 85 true/false
- 18 image occlusion
Topics (32)
- 01ReRespiratory anatomy and gas exchange
- 02VeVentilation mechanics and lung volumes
- 03ReRespiratory control and pH buffering
- 04HeHeart anatomy and cardiac cycle
- 05CaCardiac conduction and ECG basics
- 06BlBlood vessels and blood pressure
- 07BlBlood composition and hemostasis
- 08OxOxygen and carbon dioxide transport
- 09CaCapillary exchange and Starling forces
- 10LyLymphatic system
- 11InInnate immunity
- 12AdAdaptive immunity: B cells and antibodies
- 13AdAdaptive immunity: T cells and MHC
- 14ImImmune tolerance, vaccines and hypersensitivity
- 15DiDigestive tract anatomy
- 16DiDigestive enzymes and absorption
- 17LiLiver and gallbladder functions
- 18DiDigestive hormones and control
- 19KiKidney anatomy and nephron
- 20FiFiltration, reabsorption and secretion
- 21CoCountercurrent multiplier and urine concentration
- 22ReRenal hormones: ADH, aldosterone, renin-angiotensin
- 23AcAcid-base regulation by the kidney
- 24SkSkeletal muscle structure and sliding filament
- 25ExExcitation-contraction coupling
- 26SmSmooth and cardiac muscle
- 27BoBone structure and remodeling
- 28CaCartilage, joints and connective tissue
- 29SkSkin structure and thermoregulation
- 30MaMale reproductive system
- 31FeFemale reproductive system and menstrual cycle
- 32PrPregnancy and lactation
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Try it · sample practice questions
Five questions from the pack.
Q1A patient with pulmonary fibrosis has a normal alveolar PO2 but a low arterial PO2. What is the best explanation?
B. Fick's law says diffusion falls as membrane thickness increases, so equilibration is incomplete and PaO2 lags behind alveolar PO2. Surfactant loss lowers compliance, dead space affects ventilation not diffusion, and carbonic anhydrase handles CO2.
Q2A patient on warfarin has a prolonged INR. Which clotting factor is NOT reduced?
B. Warfarin blocks vitamin K recycling, lowering the vitamin K-dependent factors II, VII, IX and X. Factor VIII is not vitamin K dependent.
Q3A mouse lacks functional MHC II. Which defect is expected?
D. MHC II presents peptide to CD4 helper cells, which drive B cell class switching and memory. CD8 cells use MHC I, NK cells and complement do not require MHC II.
Q4Which structure senses distal tubular NaCl and regulates the afferent arteriole?
D. The macula densa signals tubuloglomerular feedback and renin release. Podocytes form the filtration slits, vasa recta preserve the gradient, and principal cells respond to ADH and aldosterone.
Q5An organophosphate pesticide inhibits acetylcholinesterase. What happens at the neuromuscular junction?
A. Persistent ACh keeps the end plate depolarized and desensitized. Botulinum toxin blocks release, curare blocks receptors, and dantrolene-type drugs affect SR Ca2+ release.
Those are real questions from the pack, word for word.