@peakmcat: The 3 germ layers you NEED to know for the MCAT 🧬 During gastrulation, the embryo forms three germ layers, which eventually develop into essentially every tissue in the body: 🔵 Ectoderm → nervous system, epidermis, hair, nails, and sensory structures 🔴 Mesoderm → muscle, bone, blood, heart, kidneys, and connective tissue 🟡 Endoderm → GI tract lining, lungs, liver, pancreas, and thyroid 🧠 Easy way to remember: Ecto = outside → skin Meso = middle → muscle & movement Endo = inside → internal organs Save this for your next MCAT review! 📚⛰️ #mcat #mcatprep #premed #embryology #biology

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Saturday 01 August 2026 16:16:53 GMT