Master Mnemonics for Human Reproduction

1. Oogenesis Arrest: "P-P, S-M"

• Primary oocyte → Prophase I (P-P = Primary-Prophase)
• Secondary oocyte → Metaphase II (S-M = Secondary-Metaphase)

2. Ovulation Trigger: "LH for Leap"

• LH surge = the hormone that makes the egg "Leap" out of the follicle
• FSH = "Follicle grower" (not the ovulation trigger)

3. Fallopian Tube Regions: "FIAI"

• Fimbriae → Infundibulum → Ampulla (fertilization) → Isthmus (to uterus)

4. Semen Volume Contributions: "60-30-Small"

• Seminal vesicles: 60% (fructose-rich)
• Prostate: 30% (alkaline)
• Bulbourethral: Small % (lubrication)

5. Blastocyst Components: "Tropho Outer, Inner Cell"

• Trophoblast = Outer = $\frac{placenta}{hCG}$
• Inner Cell Mass = Embryo

6. Lacation Hormones: "PRolactin = PRoduction; Oxy = Out"

• Prolactin = milk PRoduction
• Oxytocin = milk Out (ejection/let-down)

7. Uterine Layers Outside-In: "Per-Myo-Endo"

• Perimetrium (outer) → Myometrium (muscle) → Endometrium (inner)

8. Sperm Structure Head-Middle-Tail: "HMT = Has Mitochondria There"

• Head (H) = acrosome + nucleus
• Middle (M) = mitochondria
• Tail (T) = flagellum