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ANATOMY. 85 
Cross of the Ear—Arzises from the upper part of the shell; insert- — 
ed into the lower part of the outer-circle ; use, to draw the parts to~ 
wards-each other. ee we 2 
' MUSCLES.OF THE INTERNAL EAR. 
The Relaxer of the Drum—Arises from the spinous process of 
the wedge bone; inserted into the long process of the hammer; use, 
. to draw the hammer obliquely forward towards its origin. 
Stretcher of the Drum—Arises from the cartilaginous extremity 
‘of the Eustachian tube ; inserted into the handle of the hammer ; use, 
_ to draw the hammer and membrane of the drum to the rocky por- . 
tion, elas ic cates 
Stirrup Muscle.—A little cavern in.the hard portion, near the 
cells of the breast-like process ; inserted into the back part of the 
_ head of the stirrup; use, to draw the stirrup obliquely upwards to 
the cavern. < 
MUSCLES OF THE LOWER JAW. 
.. Lemple Muscle—Arises from the lower part of the side bone and 
forehead bone, false suture of the temple bone, back part of the 
cheek bone, the temple-process of the wedge bone, and the expand= 
ed tendon that covers it; inserted into the crow-process of the lower 
jaw, its fibres being bundled together and passed into a small com- 
pass, #0 as to pass umder the cheek; use, to move the lower jaw 
upwards. - scolcas Py etek oe ee sees ae 
4 Wicing Muscles—Arise in the tipper jaw bone, near the cheek 
one, and form the front part of the cheek ; inserted into the angle 
of the lower jaw upwards to the basis of the crow-process ; use, to 
raise and move the jaw a little forwards and -baékwards: : 
_ Inner Pen-shaped— Arises from the internal pen-process of the 
wedge bone ; inserted into the inner side and near the corner of the 
we jaws use, to raise the lower jaw, and draw it a little on one 
side. 
Outer Pen-shaped—aArises from the outer pen-process; inserted 
into the joint-process of the lower jaw and cap ligaments; use, to 
move the jaw and prevent the ligaments of the jaw frdm being pinched; 
MUSCLES WHICH APPEAR UPON THE aaa 
Broad Muscle—Arises from the cell metnbrane covering the 
breast and triangular muscles; inserted into the side of the chin and 
coverings of the cheek ; use, to draw the cheeks and skin of the 
face downwards. ae > 
Breast and Temple Musele—Arises from the upper part of the 
breast bone, and fore part of the collar bone ; inserted into the breast- _ 
process of the temple bone, as far back as the back suture; use, _ 
to move the head to one side, and bend it forwards.. i 
MUSCLES BETWEEN THE LOWER JAW AND TONGUE BONE. — 
