MEHAU KULYK / SCIENCE PHOTO LIBRARY MEHAU KULYK / SCIENCE PHOTO LIBRARY
Muscles of the head and neck, historical anatomical artwork. This head has been dissected to show several muscles involved in moving the face and neck. These include: The sternocleidomastoideus, running from behind the ear to the sternum, the orbicularis oris surrounding the mouth, the nasalis of the nose, and the masseter, which controls the chewing motion of the jaw. In this dissection, the square-shaped larynx (white) can also be seen partially obscured in the neck. This illustration is taken from the 19th century French textbook The Atlas of Human Anatomy and Surgery by J. M. Bourgery and N. H. Jacob.
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