Question

The secretory phase in the human mestrual cycle is also called

• A. luteal phase and lasts for about $6$ days
• B. follicular phase and lasts for about $6$ days
• C. luteal phase and lasts for about $13$ days
• D. follicular phase and lasts for about $13$ days

Answer 1

The correct option is C luteal phase and lasts for about $13$ days

The secretory phase in the human menstrual cycle refers to the luteal phase that occurs just after the ovarian cycle. During this phase, the follicle undergoes changes and forms the corpus luteum that secretes estrogen and progesterone and helps make the uterine endometrium receptive to the blastocyst. It happens from day 15 to day 28 of the cycle and therefore can be said to last for 13 days. So, the correct option is 'luteal phase and lasts for about 13 days'.