The curves antihelix inside of the helix, separated by the groove called scapha. It is divided up into the heart or the upper and lower leg, with the triangular fossa between. The flap protects called tragus of the ear canal, or Earhole. Often with two separate bulges, it uses the Greek name for goat because of its hair-like beard.
Through intertragical notch is known as the importance antitragus name, part of the rigid plate cartilage from which hangs the fleshy lobule auricular (ear lobe). Depression behind the ear is called atrial groove.
Wikipedia on the outer ear,
Darwin's tubercle (thanks, Donna)
tragus (thank you, Stape)
