Myographia nova sive Muscolorum omnium (in copore humano hactenus repertorum) accuratissima descripto, in...

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Mastoides Mastoid muscle.

Flexor of the head. It arises from a double beginning, with a certain cavity separating the beginnings, and one part of this, from the sternum, obtains a nervous origin, while the other, from the higher part of the clavicle collarbone, obtains a fleshy one: both are inserted obliquely into the mastoid process with a round and fleshy tendon. If both of these muscles act together, they incline the head forward; if one acts separately from the other, the movement of the head nodding to the side follows, as if to recline upon the shoulder.

An anatomical plate containing three figures. Fig. 1 (top) shows a detailed dissection of the hyoid bone (Os Hyoides) and associated muscles of the throat, including the Sternohyoides, Mylohyoides, and Coracohyoides. Fig. 2 (bottom left) is a bust of a human figure with the head tilted back, showing the superficial muscles of the neck and throat. Fig. 3 (bottom right) is a similar bust showing a deeper dissection of the neck muscles, including the Hyothyroideus and Cricothyroideus. The plate is titled "The end of the second lecture".