Malaria is caused by
a. a virus.
b. a protist.
c. a fungus.
d. a mosquito.

the oblique cord is a ligament between the ulnar and radius bones in the lower arm near the elbow. it takes the form of a small, flattened band, extending downward and lateralward, from the lateral side of the ulnar tuberosity at the base of the coronoid process to the radius a little below the radial tuberosity.

when you rub, you also apply pressure, that pressure can urge the poop to come out. i think that when your rubbing, you also might be slightly breaking it up and that can further fill the stomach.