NEET biology : Reproductive health one shot Notes 2027 Chapter 3 Class 12 NCERT + PYQ

*Reproductive Health - Shot Notes for NEET*  

*NCERT Chapter 3 -  Class 12*

*1. Core Idea: RCH*  

*RCH = Reproductive & Child Health Care Program*.  

Goal: Healthy mother + healthy child. Started by Govt to reduce MMR, IMR, STDs, population explosion.  

*Trick*: *RCH = Right Care for Her + Child*

*2. Problems India Faced → Solutions Given*

Problem Govt Solution

**Population Explosion** Saheli, Awareness, Contraceptives

**STDs** AIDS control program, Sex education

**Sex Abuse** POCSO Act, Counseling

**Infertility** IVF, ART centers

**Female Foeticide** Amniocentesis banned for sex detection

*3. Methods of Birth Control - Diagram Based*  

*Diagram: Contraceptive Methods Flowchart*

Contraceptives

      |

      ├─ Natural → Periodic Abstinence, Withdrawal, Lactational Amenorrhea

      |

      ├─ Barrier → Condoms, Diaphragm, Cervical Cap, Vaults

      |

      ├─ IUDs → Non-medicated: Lippes Loop

      | Copper: CuT, Cu7, Multiload 375

      | Hormonal: Progestasert, LNG-20

      |

      ├─ Oral Pills → Saheli, Mala-D, Mala-N

      |

      ├─ Injectables/Implants → Progestogen alone

      |

      └─ Surgical → Vasectomy (Male), Tubectomy (Female)

*NEET High-Yield Points:*  

1. *Saheli* = Only non-steroidal pill. Taken once a week. Developed by CDRI Lucknow. Contains *Centchroman*. No side effects.  

2. *Lactational Amenorrhea* = No menstruation during 6 months of intense breast feeding. Natural but effective only till 6 months.  

3. *IUDs* = Ideal for females who want to delay pregnancy + space children. Cu ions suppress sperm motility + fertilizing capacity.  

4. *Vasectomy vs Tubectomy*:  

   *Diagram: Sterilization*

   Vasectomy: Vas deferens cut + tied → Sperm not in semen

   Tubectomy: Fallopian tube cut + tied → Ovum not reach uterus

   Note: Hormones still produced. No effect on libido.

*4. MTP = Medical Termination of Pregnancy*  

Legal in India under MTP Act 1971.  

Allowed up to: 12 weeks with 1 doctor, 12-24 weeks with 2 doctors.  

*Why legal?* To prevent unsafe abortions + in case of rape, fetal abnormality, contraceptive failure.  

*NEET Trap*: MTP is not for female foeticide. Sex determination is illegal.

*5. STDs - Sexually Transmitted Diseases*  

Also called *VD = Venereal Diseases* or *RTI = Reproductive Tract Infections*.  

*Bacterial*: Gonorrhea, Syphilis, Chlamydia, Chancroid → Curable if detected early.  

*Viral*: Hepatitis-B, Genital Herpes, HIV-AIDS → Not curable.  

*Protozoan*: Trichomoniasis  

*Fungal*: Candidiasis  

*HIV-AIDS Diagram: How it Spreads vs Not Spread*

Spreads By: | Does NOT Spread By:

1. Sexual contact | 1. Hugging, shaking hands

2. Blood transfusion | 2. Mosquito bite  

3. Shared needles | 3. Sharing food, toilet

4. Mother to child | 4. Cough, sneeze

*6. Infertility & ART - Assisted Reproductive Technologies*  

*Reason*: Physical, Congenital, Drugs, Immunological, Psychological.  

*Main ART Methods:*  

1. *IVF = Test Tube Baby*: Fertilization outside body in lab. Then ET.  

   *ET = Embryo Transfer* → ZIFT: Zygote Intra Fallopian Transfer, IUT: Intra Uterine Transfer  

2. *GIFT*: Gamete Intra Fallopian Transfer. Ovum transferred to fallopian tube. For females who can’t produce ovum but can provide suitable environment.  

3. *ICSI*: Intra Cytoplasmic Sperm Injection. Sperm directly injected into ovum. For male infertility.  

4. *AI = Artificial Insemination*: Semen from husband/donor injected into vagina or uterus = IUI.  

5. *Surrogacy*: Another female bears the child.

*Trick to Remember ART*: *IVF me ZIFT-IUT, GIFT me Gamete, ICSI me Injection, AI me Injection of Semen*

*7. Amniocentesis - The Banned Test*  

*Diagram: Amniocentesis Process*

Uterus → Amniotic fluid taken by syringe

        ↓

    Fetal cells tested

        ↓

Check: Chromosomal disorders like Down Syndrome

Banned for: Sex determination

Used to detect genetic disorders. Banned for sex determination due to female foeticide.

*8. 5 Questions That Direct Answer*  

1. *Why is CuT considered better than Condoms for long-term use?*  

   Ans: CuT once inserted works for 3-5 years, no daily reminder, no interruption during coitus. Condoms need use every time.  

2. *If both partners are HIV+, can their child be HIV-?*  

   Ans: Yes, with ART + anti-retroviral drugs during pregnancy + C-section + no breast feeding, chance of transmission <2%.  

3. *Why Saheli is called "Once a week pill" but Mala-D is "Daily pill"?*  

   Ans: Saheli = Centchroman, non-steroidal, slow action. Mala-D = Steroidal, needs daily to maintain hormone level.  

4. *Can MTP be done at 30 weeks if fetus has severe abnormality?*  

   Ans: Yes, after 2021 amendment, MTP allowed up to 24 weeks for special cases + anytime if Medical Board approves for substantial fetal abnormality.  

5. *Why ICSI is preferred over IVF in case of low sperm count?*  

   Ans: IVF needs 50,000-1 lakh sperms per ovum. ICSI needs only 1 live sperm per ovum, so works in severe male infertility.

*Last Minute NEET Formula: C.S.M.A.S*  

*C*ontraceptives → *S*TDs → *M*TP → *A*RT → *S*ex Education

This covers full chapter in exam language. Draw the 2 diagrams: Contraceptive flowchart + Vasectomy/Tubectomy.  

Need PYQ based MCQs from this?