Difference between front and back part of tongue

Explanation:

The tongue is defined as a muscular organ, present in mouth that helps in mastication and swallowing of food. ... The front part of the tongue is narrow and thin whereas the back part of the tongue is wide.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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cell division is not regulated in tumor cells.