Which one of the following statements is incorrect about menstrual cycle?

  • A

    The first menstruation begins at puberty and is called menarche

  • B

    Lack of menstruation may also occur due to some environmental factors like stress, poor health

  • C

    Corpus luteum secretes large amounts of progesterone which is essential for maintenance of endometrium

  • D

    In absence of fertilisation, corpus luteum degenerates in luteal phase and new follicles start developing immediately

Similar Questions

Fertilisation in human beings occurs in

Match the columns.

Column $I$ Column $II$
$(a)$ Testis andovary $(1)$ Part of reproductive organ that transport germ cells
$(b)$ Clitoris
 
$(2)$ Developing fleshy fold surrounding both side of urinegenital groove - urethra
$(c)$ Oviduct $(3)$ Gametes which produce germ cells
$(d)$ Scrotum,labium $(4)$ Organs associated majora with sexual respons

Ejaculation is the $...A...$ response. Erection is a $...B...$ response. Here, $A$ and $B$ refers to

Massive amount of yolk present in the vegetal region of the egg, makes an egg

Given below is a diagrammatic sketch of a portion of human male reproductive system. Select the correct set of the names of the parts labelled $A, B, C, D.$

  • [AIPMT 2009]