By definition, pi is the ratio of the circumference of a circle to its diameter. Pi is always the same number, no matter which circle you use to compute it. Unlike some responses on this forum, PI does not equal 22/7 there is a slight difference.
Rectum. The rectum is the concluding part of the large intestine that terminates in the anus. The average length of the human rectum may range between 10 and 15 cm.Its diameter can be compared to that of the sigmoid colon (the part of the large intestine nearest the rectum) at its onset.However, it becomes larger near the anus, where it forms the rectal ampulla.The key role of the rectal ampulla is to act as a temporary storehouse for feces.ts diameter can be compared to that of the sigmoid colon (the part of the large intestine nearest the rectum) at its onset. However, it becomes larger near the anus, where it forms the rectal ampulla. The key role of the rectal ampulla is to act as a temporary storehouse for feces.
According to About.com, the function of the rectus femoris muscle is to enable knee extension and hip flexion. The rectus femoris, along with five other hip flexors, is responsible for flexion that draws the legs towards the trunk of the body.