Histology
Lessons
Illustrated, high-yield walkthroughs of the histology concepts the boards test most.
A board-focused tour of epithelial classification and the epithelial junctional complex — tight, adherens, desmosome, and gap junctions plus hemidesmosomes — mapping each junction's protein components to the high-yield blistering and genetic diseases (pemphigus vs. bullous pemphigoid, connexin mutations, E-cadherin loss) tested on Step 1.
A board-focused tour of connective tissue histology: its cells, fibers, and ground substance, then the high-yield collagen types, the step-by-step synthesis pathway, elastin, and the diseases (osteogenesis imperfecta, scurvy, Ehlers-Danlos, Marfan, Alport) that arise when a specific step fails.
A board-focused walkthrough of the three muscle types — how to identify skeletal, cardiac, and smooth muscle on histology, the sarcomere band anatomy and what changes during contraction, and the calcium-handling and intercalated-disc details Step 1 loves to test.
A Step 1–focused histology lesson on nervous tissue that maps neuron ultrastructure and axonal transport, then pairs each CNS/PNS glial cell with its origin, function, marker (GFAP, S-100), and disease. Reinforced with schwannoma and glioblastoma vignettes and classic transport/marker mnemonics.
A board-focused tour of the peripheral smear and bone marrow: identifying each formed element, the leukocyte-frequency mnemonic, and the classic morphologic buzzwords (hypersegmented neutrophils, Auer rods, schistocytes) that map to Step 1 diagnoses and next-best-steps.
A boards-focused walk through respiratory histology: the conducting-to-respiratory epithelial gradient, key cells (goblet, club, type I/II pneumocytes, macrophages, neuroendocrine), and the classic vignettes of neonatal RDS and Kartagener syndrome.
A board-focused walk through GI tract histology: the universal four-layer wall plan and enteric plexuses, the epithelial transitions and cell types of each segment, and the classic disease correlations (Barrett metaplasia, Hirschsprung aganglionosis, pernicious anemia).
A board-focused tour of reproductive histology anchored on gonadotropin targets and secretory products: Sertoli/granulosa (FSH) versus Leydig/theca (LH), the ovarian two-cell model, and classic buzzwords — Reinke crystals, Call–Exner bodies, stereocilia, and corpora amylacea — plus the clinical vignettes that test them.
Sample flashcards
Simple columnar epithelium locations?
Gap junction function?
Parathyroid chief cells function?
Stratified cuboidal epithelium location?
Osteon (Haversian system) structure?
Paneth cell function?
FAQ
What's covered in the Histology topic?
Histology covers high-yield mechanisms, clinical presentations, diagnostic workup, and management — drawn from First Aid, Pathoma, and the NBME content outline.
How many practice questions does Histology have?
0 board-style multiple-choice questions and 95 spaced-repetition flashcards. Sign up free to drill them with adaptive difficulty and a Socratic AI tutor that explains every wrong answer.
Is Histology on USMLE Step 1 or Step 2 CK?
Histology appears on both Step 1 (foundational mechanisms) and Step 2 CK (clinical decision-making). Our questions are tagged by exam target so you can filter to just the Step you're studying.
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