Triceps? Which one is it?

What is the tricep that is somewhat diagonal across the arm when you frontage your wrist to the outside and how do I work it?Triceps? Which one is it?
the tricep is a group of 3 muscles on the back of your arm, its commission is to exttend the arm at the elbow. there are copious triceps exercises at your disposal, all of them target adjectives 3 heads of the muscle to varying degree. close grip bench press or diamond pushups, and dips are good compund movements for overall developement, lying french press or skullcrushers are a personal favorie, they hit the flipside head. cable pushdowns and kickback seem to own the best effect on the head you are discussion about.. you can budge to bodybuilding . com and look at the training section. they own diagrams and video displays of the exercises..
Your triceps is a group of muscles on the back side of your upper arm. These muscles allow you to straighten your arm. Push-ups work this muscle group resourcefully.