CBSE Class 12 Biology Human Reproduction Key Points

CBSE Class 12 Biology Human Reproduction Key Points. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick to learn flash cards, flow charts, mind maps, teacher notes, important formulas, past examinations question bank, important concepts taught by teachers. Students can download these useful educational material free and use them to get better marks in examinations.  Also refer to other worksheets for the same chapter and other subjects too. Use them for better understanding of the subjects.

BIOLOGY

Term Explanation

1 Spermatogenesis The immature male germ cells produce sperms that begins at puberty (Production of sperm)

2 Spermiogenesis The process of transformation of spermatids into sperm

3 Spermiation Release of sperms from seminiferous tubule

4 Oogenesis Process of formation of a mature female gamete initiated during embryonic development

5 Ovulation The process during which the Graafian follicle ruptures to release the secondary oocyte (ovum) from the ovary

6 Menarche The first menstruation that begins at puberty (Starting of first menstrual flow in females)

7 Menstrual cycle Cycle of events starting from one menstruation till the next one after every 28 / 29 days

8 Menopause Ceasation of menstrual cycle around 50 years of age

9 Cleavage The mitotic division the zygote undergoes when it moves toward uterus and forms blastomeres

10 Implantation Embedding of blastocyst in the endometrium of the uterus leads to pregnancy

11 Parturition Vigorous contraction of the uterus at the end of pregnancy causing expulsion/delivery of the foetus (child birth)

12 Foetal ejection reflex Mild uterine contractions induced by the signals for parturition from the fully developed foetus and the placenta

13 Lactation The process by which the mammary gland start producing milk

14 GnRH Gonadotropin releasing hormone

15 LH Luteinising hormone

16 FSH Follicle stimulating hormone

17 hCG Human chorionic gonadotropin

18 hPL Human placental lactogen.

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