Medical School MD + DO Mastery

A 4-year, board-aligned study system for medical school and licensing exams.

Walk the full Year 1–4 curriculum — foundational sciences, organ-system blocks, clinical clerkships and advanced practice — each with mastery checklists and linked learning resources, plus a dedicated review system for school exams, Shelf/COMAT, USMLE Step 1–3 and COMLEX-USA Levels 1–3.

REPRODUCTIVE + PREGNANCY FOUNDATIONS

YEAR 2 | PAGE 24E - REPRODUCTIVE PHYSIOLOGY + FERTILITY

BUILD THE TIMELINE BEFORE MEMORIZING DISEASE

Use HPG AXIS -> GAMETOGENESIS -> CYCLE/OVULATION -> FERTILIZATION -> IMPLANTATION/PLACENTA -> PREGNANCY ADAPTATION. Predict the hormone, anatomy and timing first; then attach pathology and pharmacology.

A. DEEP REPRODUCTIVE PHYSIOLOGY VIDEOS - DIRECT & PLAYABLE

#VideoTimeWhyLink
1.Male Reproductive System | Spermatogenesis - Ninja Nerd~23 minSertoli/Leydig physiology, FSH/LH/testosterone/inhibin, seminiferous tubules and stages of sperm development.
2.Male Reproductive System | Erection & Ejaculation - Ninja Nerd~23 minAutonomic control, nitric oxide/cGMP, emission/ejaculation and mechanism-based pharmacology.
3.Female Reproductive Cycle | Ovulation - Ninja Nerd~34 minFollicular recruitment, estrogen feedback, LH surge, ovulation and corpus-luteum physiology.
4.Female Reproductive Cycle | Menstrual Cycle - Ninja Nerd~22 minOvarian and endometrial phases, hormone feedback and the physiology behind abnormal cycle patterns.
5.Reproductive System | Fertilization - Ninja Nerd~23 minCapacitation, acrosome reaction, zona binding, cortical reaction, pronuclei and early embryo sequence.
6.Development of the Placenta - Ninja NerdplacentaImplantation, trophoblast differentiation, chorionic villi, placental circulation and endocrine function.

A. DEEP REPRODUCTIVE PHYSIOLOGY VIDEOS - DIRECT & PLAYABLE — REPRODUCTIVE PHYSIOLOGY CLOSED-BOOK CHECK

- Draw the HPG axis and predict FSH/LH/testosterone/estrogen/progesterone/inhibin patterns from a lesion or drug target. - Rebuild follicular -> ovulation/LH surge -> luteal -> menstruation from memory, including endometrial changes. - Trace fertilization -> cleavage -> implantation -> trophoblast/hCG -> placenta, and explain what fails when timing or location is abnormal. - Predict major pregnancy endocrine/physiologic adaptations before attaching a disease label. VIDEO-FIRST | SCHOOL-EXAM + BOARD-EXAM MASTERY