Tissue architecture, organ histology, and cellular ultrastructure. Each module includes core topics, high‑yield subtopics, and clinical correlations for Step 1 mastery.
Plasma membrane, nucleus, ER, Golgi, mitochondria, lysosomes, peroxisomes, cytoskeleton. Foundational for cell biology.
Explore module →Epithelial classification, cell junctions, glandular epithelium, basement membrane, specializations.
Explore module →Connective tissue proper, cartilage, bone, blood, adipose; extracellular matrix components.
Explore module →Skeletal, cardiac, smooth muscle; sarcomere structure, excitation‑contraction coupling, neuromuscular junction.
Explore module →Neuron structure, glial cells, synapses, peripheral nerve, CNS histology, blood‑brain barrier.
Explore module →Heart wall layers, blood vessel structure, capillary types, lymphatic vessels.
Explore module →Conducting airways, respiratory zone, pulmonary vasculature, pleura.
Explore module →GI tract wall layers, esophagus, stomach, small/large intestine, liver, gallbladder, pancreas.
Explore module →Nephron structure, glomerulus, tubular segments, collecting system, bladder.
Explore module →Pituitary, thyroid, parathyroid, adrenal glands, pancreatic islets.
Explore module →Testis, male tract; ovary, female tract; breast; placenta.
Explore module →Primary and secondary lymphoid organs, lymphocyte populations, MALT.
Explore module →