The ear, irregular in form, is placed on the side of the head. The line of the ear toward the face is on a line with the upper angle of the lower jaw. The ear, in man, has lost practically all movement. It is shaped like half of a bowl with a rim turned out, and below is appended a piece of fatty tissue called a lobe. Its muscles which in primitive times, no doubt, could move it to catch faint sounds, now serve only to draw it into wrinkles, which, though varying widely, have certain definite forms. There is an outer rim often bearing the remains of a tip, an inner elevation in front of which is the hollow of the ear with the canal's opening protected in front by a flap and behind and below by smaller flaps. The ear has three planes divided by lines radiating from the canal, up and back and down and back. The first line marks a depressed angle between its planes. The second marks a raised angle.
Cartilages of the Ear
2 Anti-helix 2 Tragus
PLANES OF THE EAR
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