Muay Thai originated in Thailand and is known as the "art of eight limbs".  This style is used predominantly for the stand up game in MMA.

Mixed martial arts (MMA) is a full contact combat sport that allows a wide variety of fighting techniques and skills, from a mixture of martial arts and non-martial arts traditions, to be used in competitions.

Brazilian Jiu-Jitsu emphasizes taking an opponent to the ground and utilizing ground fighting techniques and submission holds involving joint-locks and chokeholds also found in numerous other arts with or without ground fighting emphasis.