15 public questions tagged with this topic.
Vasectomy is a permanent male contraceptive method where a small portion of the vas deferens is removed or tied. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.
FSH stimulates the growth and maturation of ovarian follicles during the early (follicular) phase of the menstrual cycle.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
Progesterone maintains uterine quiescence (prevents contractions) throughout pregnancy until labor begins.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
The LH surge in the mid-cycle triggers the release of the oocyte from the follicle.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
The withdrawal of estrogen and progesterone levels, when fertilization does not occur, leads to the shedding of the endometrium (menstruation).
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
A surge in luteinizing hormone (LH) from the anterior pituitary triggers ovulation during the menstrual cycle.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
Estrogen levels gradually rise during the follicular phase and peak in the late follicular phase, just before the LH surge triggers ovulation.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Menstrual Cycle Fertilization Implantation Pregnancy Parturition Lactation
Endometriosis is the condition in which endometrial tissue is found outside the uterus, often causing pelvic pain and infertility.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Female Reproductive System and Gametogenesis
The ovary is covered by the germinal epithelium, which is derived from mesothelium.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Female Reproductive System and Gametogenesis
The endometrium is the innermost layer of the uterus that undergoes cyclical regeneration and shedding during menstruation.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Female Reproductive System and Gametogenesis
The endometrium, or the inner lining of the uterus, is shed during menstruation if no implantation occurs.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Female Reproductive System and Gametogenesis
Azoospermia is defined as the complete absence of sperm in the ejaculate, a major cause of male infertility.
Ref: NCERT Class 12 Biology Chapter 2: Human Reproduction Female Reproductive System and Gametogenesis
