Dougall, John; Dougall, John [Editor]: The Cabinet Of The Arts: being a New and Universal Drawing Book, Forming A Complete System of Drawing, Painting in all its Branches, Etching, Engraving, Perspective, Projection, & Surveying ... Containing The Whole Theory And Practice Of The Fine Arts In General, ... Illustrated With One Hundred & Thirty Elegant Engravings [from Drawings by Various Masters] (Band 1) (London, [1821])

44

ANATOMY.

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A Table o/~ £Ae Muscles, Sfc. continued.

Name. Origin. Insertion. Use.

"4. Zygomaticus Immediately above the origin of Into the angle of the To raise the angle of the
minor. the zyg. major. mouth. . mouth obliquely out-

wards.

5. Buccinator. From the alevoli of the dentes Into the angle of the To contract the mouth

mola'-es in the upper and mouth. and draw the angle of

lower jaws. it outwards and back-

wards.

6. Depressor la- From the os maxill. super, im- Into the root of the ala To draw theala nasi and
bii superioris, mediately above the gums of nasi and upper lip. upper lip downwards,
alaeque nasi. the dentes incisores.

_^ 7. Depressoran- At the side of the chin from the Into the angle of the. To draw the corner of
| • guli oris. lower edge of the maxilla ui- mouth. the mouth downwards.

ferior.

8. Depressor la- From the lower tmd anterior Into the under lip. To draw the under lip
bii inferioris. part of the maxilla inferior. downwards and some-
what outwards.

9. Levator labii From near the gums of the in- Into the under lip and To raise the under lip
inferioris. cisores and canini of the skin of the thin. and skin of the chin.

maxilla inferior.

10. Orbicularis — .— —■ —■ To shut the mouth by
. oris*. constringing the lips.

1. Temporalis* From part of the os bregmatis Into the coronoid pro- To move the lower jaw

and os frontis; squamous part cess of the lower jaw. upwards,
of the os temporis ; back part
of the os malee, and the tem-
poral process of the os sphe-
noides.

2. Masseter. From the malar process- of the Into the basis of the coro- To raise and likewise

os maxillare, and the lower noid process and that ;o move the jaw a lit-
edges of the os malse, and of part of the jaw which tie forwardsand back-
the zygomatic process of the supports that and the wards.

g-^ os temporis. condyloid process.

3. Pterygoideus From the inner surface of the Into the lowerjaw on its To raise the lower jaw
internus. outer wing of the pterygoid inner side and near its and draw it a little to

process of the os sphenoides, angle. one side,

and from the process of the
os palati that helps to form
the pterygoid fossa.

4. Pterygoideus From the external ala of the Into the fore part of the To move the jaw for-
externus. pterygoid process,a small part condyloid process of wards and to the op-

of the adjacent os maxillare, the lower jaw, and posite sidef, and at
and a ridge in the temporal likewise of the capsu- the same time to pre-
process of the os sphenoides. lar ligament. vent the ligament of

the joint from being
pinched.

:1. Latissimus From the cellular membrane Into the side of the chin To draw the cheeks and
colli. covering the pectoral, del- and integuments of skin of the face down-

toid, and trapezius muscles. the cheek. wards; and when the

mouth is shut,to draw
all that part of the
skin to which it is
connected below the
lower jaw upwards.

2. Mastoideus. From the upper part of the Into the mastoid process To move the head to

sternum, and from the upper and as far back as the one side,or,when both
and fore part of the clavicle. lambdoidal suture. muscles act, to bend

it foi ward.

* This muscle is in a great measure, if not wholly, formed by the buccinator, zygomaticus, depressores, and other muscles,
that move the lips. Its fibres surround the mouth like a ring.

t This happens when the muscle acts singly. When both act, the jaw is brought horizontally forwards.

Muscles,

Cm