(10.) MUSCLES WITHIN THE CAVITY OF THE ABDOMEN, ON THE ANTERIOR AND LATERAL PARTS OF THE SPINE.

1. Poas parvus From the fides and tranfverfe pro-
(z).
ceffes of the uppermoft lumbar
vertebra, and fometimes of the
lowermoft dorfal vertebræ.

2. Poas magnus. From the bodies and tranfverfe pro-
ceffes of the last dorfal, and all the
lumbar vertebræ.

VOL. II. PART 1.

From the bafis, fpine, and upper
cofta of the fcapula.

Into the brim of the
pelvis, at the junc-
tion of the os pubis
with the ilium.
Into the os femoris, a

little below the tro-
chanter minor.
In common with the
pfoas magnus.
Into the tranfverfe
proceffes of the four
uppermost lumbar
vertebræ, the inferi-
or edge of the last
rib, and the fide of
the lowermoft dorfal
vertebra.

Into the lower part
of the os facrum, &
almoft the whole
length of the os coc-
cygis laterally.

To bend the loins forwards.

To bend the thigh forwards.

To affift the pfcas magnus.

To fupport the spine, or to draw it to one fide.

To draw the os coc. cygis forwards and inwards (6).

UPPER PART OF THE OS HUMERI.
Into the anterior and To raise the arm.
middle part of the

os humeri.

Into a large tuberofi- To raise the arm.
ty at the head of the
os humeri.

From the bafis and fpine of the fca- Into the upper and
pula.

middle part of the
tuberofity.
Into the lower part

of the tuberofity.
Into the ridge at the
infide of the groove
formed for the long
head of the biceps.
E

To roll the os humeri outwards.

To affift the infra fpi

natus.

To alift in the rotatory motion of the arm.

6. Sub

Name.

6. Subscapularis.

7. Coraco-brachialis (e).

From the coracoid procefs of the Into the middle and
fcapula.
inner fide of the os
humeri.

(212.) MUSCLES ON THE OS HUMERI.

1. Biceps flexor By two heads, one from the cora-
cubiti.
coid procefs, and the other, or
long head, from the upper and
outer edge of the glenoid cavity
of the fcapula.

2. Brachialis in- From the os humeri, below, and
at each fide of the tendon of the
deltoids.

ternus.

Ufe. To roll the arm inwards.

To roll the arm forwards and upwards.

Into the tuberofity To bend the fore-
at the end of the ra-
dius.

Into a fmall tuberofi-
ty at the fore part
of the coronoid pro-
cefs of the ulna.

arm.

To assist in bending the fore arm.

Into the upper and To extend the fore-
outer part of the o-
lecranon.

(213.) MUSCLES ON THE FORE-ÁRM.

1. Supinator lon- From the outer ridge and anterior furface of the os humeri, a little above its outer condyle. Immediately below the origin of the fupinator longus.

2. Extenfor carpi radialis longus.

3. Extenfor carpi radialis brevis.

From the outer and lower part of
the outer condyle of the os hume-
ri, and the upper part of the ra-
dius.

From the outer condyle of the os
humeri.

From the outer condyle of the os
humeri.

From the outer condyle of the os
humeri.

From the outer condyle of the os
humeri.

8. Flexor carpi From the inner condyle of the os
humeri, and anterior edge of the
olecranon (g).

ulnaris.

Into the radius near
its ftyloid procefs.

Into the upper part
of the metacarpal
bone of the middle
finger.

Into the upper part
of the metacarpal
bone of the middle
finger.

arm.

To affift in turning
the palm of the
hand upwards.
To extend the wrift.

To affift the extenfor longus.

Into the internal an- To bend the hand. nular ligament, and

aponeurofis palma

ris (b).

Into the metacarpal To bend the hand. bone of the fore fin

ger.

Into the anterior and

convex edge of the
radius, near its mid-
dle.

Into the fecond bone
of each finger.

To roll the hand inwards.

To bend the fecond joint of the fingers.

13. Supinator

Origin.
From the outer condyle of the os
humeri, and pofterior furface and
outer edge of the ulna.
From the middle and back part of
the ulna, interoffeous ligament, and
radius.

From the back part of the ulna, and
interoffeus ligament and radius.

From the back of the ulna and in-
teroffeous ligament.

From the middle of the ulna.

From the upper and fore part of
the ulna, and interoffeous ligament.

From the upper and fore part of the
radius.

From the inner and lower part of
the ulna.

(214.) MUSCLES ON

THE HAND.

1. Lumbricales From the tendons of the perforans.

2.

(2.)

Abductor brevis pollicis.

3. Opponens pollicis.

4. Flexor brevis pollicis.

3.

Abductor pollicis.

From the fore part of the internal
annular ligament, os fcaphoides,
and one of the tendons of the ab-
ductor longus pollicis.

From the inner and anterior part of
the internal annular ligament, and
from the os fcaphoides.
From the os trapezoides, internal
annular ligament, os magnum, and
os unciforme.
From the metacarpal bone of the
middle finger."

6. Abductor in- From the inner fide of the firft bone
dicis.
of the thumb, and from the os
trapezium.

7. Palmaris bre- From the internal annular ligament,
and aponeurofis palmaris.

vis.

From the internal annular ligament, Into the fide of the
and os pififorme,

From the os unciforme and inter-
nal annular ligament.

From the os unciforme and inter-
nal annular ligament.

Situated between the metacarpal
bones.

firft, bone of the little
finger.
Into the first bone of

the little finger.
Into the metacarpal
bone of the little
finger.

inwards, and to turn it upon its axis. To bend the fecond joint of the thumb.

To move the thumb towards the fingers.

To move the fore finger towards the thumb.

To contract the palm

of the hand.

To draw the little finger from the rest.

To bend the little finger.

To move that bone towards the reft.

Into the roots of the To extend the fingers

fingers.

and move them towards the thumb (m).

E 2

Names.

Origin.

12. Interoffei externi.

From between the metacarpal bones Into the roots of the To extend the finon the back of the hand,

fingers.

(215.) MUSCLES AT THE BACK PART OF THE PELVIS, AND UPPER PART

ternus.

From the anterior part of the os fa

crum.

By two portions, one from the out-
er furface of the fpine of the if-
chium; the other from the tube-
rofity of the itchium and pofterior
facro-ifchiatic ligament.

6. Obturatorin- From the fuperior half of the inner
border of the foramen thyroideum.
From the tuberofity of the ifchium.

7. Quadratus(9) femoris.

Into the upper part
of the linea afpera of

the os femoris.
Into the outer and
back part of the
great trochanter of
the os femoris.

Into the upper and an-
terior part of the
great trochanter.
Into a cavity at the
root of the trochan-
ter major.
Into the fame cavity
as the pyriformis.

Into the fame cavity

with the former.
Into a ridge between

the trochanter ma-
jor and trochanter
minor.

(216.) MUSCLES ON THE THIGH (r).

1. Biceps flexor. By two heads; one for the tubero-
fity of the ifchium, the other from
the linea afpera near the infertion
of the gluteus maximus.
From the tuberofity of the ischium.

2. Semi-tendi-
nofus.
3. Semi-mem-
branofus.

From the tuberofity of the ischium.

gers; but the first
draws the middle
finger inwards, the
fecond draws it out-
wards, and the third
draws the ring fin-
ger inwards.
OF THE THIGH.
To extend the thigh
and draw it out-
wards.

To draw the thigh
outwards and a lit-
tle backwards, and
when it is bended,
to roll it.
To aflift the former.

To roll the thigh outwards.

To roll the thigh outwards, and likewife to confine the tendon of the obturator internis, when the latter is in action. To roll the thigh outwards.

To move the thigh outwards.

From the fuperior and anterior fpi- Into the inner fide of To stretch the fafcia. nous process of the ilium.

5.Flexor longus From the upper and inner part of By 4 tendons, which
digitorum pe-
the tibia.

From the back part, and a little be- Into the laft bone of To bend the great low the head of the fibula.