Chin ups, pull ups, other workouts with a bar?

can someone explain the different muscles that chin ups and pulls up do? also theres a type of pull up where your hands are parallel to your body (thumbs pointing to the back). whats that one called and what does it target. what other workouts can be done with a pull up bar?
Answer:
Chin ups hit biceps, pull ups hit triceps. Both hit the entire arm though through both being a semi compound movement.I think the other one you mention is is a medial deltoid excercise for your shoulders called the dumbel press.A pull up bar is a great tool, pull ups, chins is all you can do on it though. Get a dipping bar and you can hit chest, and delts too for a complete upper body routine. Throw in some ab crunches aswell.

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Chin ups hit biceps, rear delts (shoulders) and the upper back
Pull ups hit biceps. triceps, front delts and the upper back
Other exercises you can do are leg raises (hold the bar and raise your knees to your chest, works abs)
Wide grip chin ups (wider grip than normal to emphasise work on shoulders.
Close grip pull ups (emphasises work on the shoulders and chest)

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