21/03/2026
Here’s a clear NCERT-style summary of the Human Reproductive System (useful for NEET UG revision):
🌸 Human Reproductive System (NCERT Summary)
1. Male Reproductive System
🔹 Organs:
Te**es (primary s*x organs)
Located in sc***um (2–2.5°C lower than body temperature → s***m formation)
Accessory ducts:
Rete te**is
Vasa efferentia
Epididymis
Vas deferens
Urethra
Accessory glands:
Seminal vesicles
Prostate gland
Bulbourethral glands
🔹 Functions:
Production of s***ms (S***matogenesis)
Secretion of testosterone
2. Female Reproductive System
🔹 Organs:
Ovaries (produce ova & hormones)
Oviducts / Fallopian tubes
Infundibulum → Ampulla → Isthmus
Uterus
Cervix
Va**na
🔹 Functions:
Formation of ova
Site of fertilization & development
3. Gametogenesis
🔹 S***matogenesis (in te**es)
Formation of s***m from s***matogonia
Begins at puberty
Controlled by FSH & LH
🔹 Oogenesis (in ovaries)
Formation of o**m
Starts before birth
One o**m released per cycle
4. Menstrual Cycle (28 days)
🔹 Phases:
Menstrual Phase (Day 1–5) → shedding of endometrium
Follicular Phase (Day 6–13) → follicle growth
Ovulation (Day 14) → release of o**m
Luteal Phase (Day 15–28) → corpus luteum formation
5. Fertilization
Occurs in ampulla of fallopian tube
Fusion of s***m & o**m → zygote
Zygote → embryo → implantation in uterus
6. Pregnancy & Embryonic Development
Implantation in endometrium
Formation of placenta
Gestation period: ~9 months
7. Parturition (Childbirth)
Controlled by hormones:
Oxytocin
Relaxin
8. Lactation
Milk production by mammary glands
Hormone: Prolactin
9. Important Hormones (VERY IMPORTANT for NEET)
GnRH → from hypothalamus
FSH & LH → from pituitary
Testosterone → male
Estrogen & Progesterone → female
🔥 NEET Important Points
Fertilization site → Ampulla
Implantation → Uterus
Ovulation → Day 14
S***m survival → 2–3 days
O**m survival → 24 hours
📚 NCERT Key Diagrams to Practice
Male reproductive system
Female reproductive system
S***m structure
O***y & follicle stages
If you want, I can also provide: ✅ NCERT-based MCQs for NEET
✅ Short notes (1-page revision)
✅ Important diagrams with labels
