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in their proper position and study the relation each part bears to its surround-
ings.



SHOULDER AXD ARM 93

FIG. 103. BACK VIEW OF THE SCAPULAR MUSCLES AND TRICEPS. (Morris.}



Supra-spinatus



Infra-spinatus
Teres minor



Teres major



Long head oi triceps



Outer head of triceps



Inner head of tricep




FIG. 104. FRONT VIEW OF THE SCAPULAR MUSCLES. (Morris.)



CLAVICLE
CORACOID PROCESS

Supra-spinatus



Subscapulans



Teres major
-Latissimus dorsi



Coraco-brachialis and short
head of biceps

Fectoralis major




94



SHOULDER AND ARM



FIG. 105. SUPERFICIAL VIEW OF THE FRONT OF THE UPPER ARM. (Morris.}



Peetoralis minor



Coraco-brachialis



Lone head of triceps



Inner head of triceps



Brachialia anticus



Semilunar fascia




Tendons of insertion of pec-
toralis major and deltoid



Outer head of triceps



Brachialis anticus



Extensor carpi radialis
longior



Brachio-radialia



FOREARM AXD HAND



95



DEMONSTRATION XV.

FOREARM, WRIST, AND HAND.

Study the bony parts of the elbow, wrist, and fingers on the articulated
skeleton.

Outline the superficial nerves and veins.
Study lymphatics. (See Figs. 96 and 97.)



FIG. 106. THE SUPERFICIAL MUSCLES OF THE PALM OF THE HAND. (Morris.')



Flexor carpi radialis




or ossis metacarpi pollicis



Opponens pollicia



Abductor pollicis



Flexor brevis pollicis



Adductor pollicia



First lum-

briealis

First dorsal
interoe-

seous



lentum vaginale
Flexor sublimis digitorum



Flexor profundus digitoruc



Flexor profundus

digitorum



96 FOREARM AND HAND

Dissection. Make a vertical incision along the anterior middle line
through the skin from the elbow to the wrist, then make a transverse in-
cision from the lower extremity of the first incision. Turn off the skin,
exposing the superficial fascia, superficial veins, and nerves.



FIG. 107. TENDONS UPON THE DORSUM OF THE HAND. (Morris.}



Extensor ossis metacarpi
pollicis



Extensor brevis pollicis



Posterior annular ligament




Attachment of extensor
communis digitorum
to second phalanx



Attachment of extensor
communis digitorum
to third phalanx



Extensor carpi ulnaria



Extensor communis digitorum



Extensor minimi digiti



Extensor indicia



Dissect the skin down over the hand and fingers, taking care not to
destroy the annular ligaments nor the nerves and arteries.



THE FOREARM



97



Observe and study:

Fascia of forearm.
Fascia of hand.
Annular ligament (liganientum carpi transversum dorsale). (See

Figs. 106 and 107.)
Palmaris brevis muscle. (Fig. 106.)
Synovial membranes beneath the anterior annular ligament.



FOREARM.

To separate the muscles of the forearm begin with their tendons at
the wrist and separate up toward the origin of the muscle. In separating
the muscles do not destrov the arteries and nerves.



FIG. 108. SUPERFICIAL MUSCLES ox THE ANTERIOR SURFACE OF THE LEFT FOREARM.

(Holden.)



Inferior part of the biceps.

Aponeurosis of the biceps.

Tendon by which it is at- 7
tached to the biripital
tuberosity of the radius. 8

4. Brachialis anticus.

Internal head of the tri- .,



ceps.

Pronator radii teres.
Flexor carpi radialis.
Palmaris longus.
Inferior extremity of this

muscle expanding into the

palmar fascia.
Flexor carpi ulnaris.
The attachment to the pisi-
form bone.
Supinator Ipngus or bra

chio-radialis.
Inferior attachment of this

muscle.
14. Extensor carpi radialis

longior. ,
Extensor carpi radialis

brevior.
Extensor ossis metacarpi

poll! tis.




17. Tendon of the same in-

serted into the metacar-
pal bone.

18. Tendon of the extensor

secundi intemodii pollicis.

19, 19. FJexor sublimis digit o-

ggB.

20, 20. Tendons of insertion

dividing to allow the ten-
dons of the flexor profun-
dus digitorum to pass to
their insertion.

21, 21. Insertion of the flexor

sublimis digitorum to the
lower part of the middle
phalanges.

22, 22. Attachment of the

flexor profundus digito-
rum to the distal pha-
langes.

23, 23. Lumbricales.

24. Abductor pollicis.

25. Its attachment to the proxi-

mal phalanx of the thumb.

26, 26. Flexor longus pollicis.

27. Flexor brevis digitorum.

28. Abductor minimi digiti.



THE FOREARM

Muscles in front of forearm:

Superficial group. (See Fig. 108.)
Palmaris longus.
Flexor carpi radialis.
Flexor carpi ulnaris.
Flexor sublimis digitorum.
Pronator radii teres (m. pronator teres}.



FIG. 109. FLEXOR MUSCLES OF THE FINGERS. (Holden.)

-;,



1. Flexor sublimis digito-

rum.

2. Its origin from the inter-

nal condyle.

3. Its origin from the

coronoid process.

4. 4. Its origin from the

radius .

5. 5. Its two superficial ten-

dons to the middle and
ring fingers.

6. 6. Its two deep tendons

to the index and little
fingers.

7. Flexor longus pollicis.

8. Tendon of this muscle.

9. Bifurcation of the tendons

of the flexor longus
digitorum.

10, 10. Groove made by
these tendons.

n, ii. Tendons of the
flexor profundus digi-
torum occupying these
grooves and filling
them up.




12. Brachialis anticus ten-

don.

13. Internal condyle of the

humerus.

14. Biceps tendon.

15. Supinator longus or

brachio-radialis.

16. Its attachment to the

styloid process of the
radius.

17. Extensor carpi radialis

longior.

18. Tendon of insertion of

the pronator radii teres.

19. Tendon of insertion of

the flexor carpi radialis.

20. Triceps.

21. Flexor carpi ulnaris.

22. Its attachment to the

pisiform bone.

23. Abductor minimi digiti.

24. Flexor brevis minimi

digiti.

25. Abductor pollicis.



Deep group. (See Fig. 109.)
Flexor profundus digitorum.
Flexor longus pollicis.
Pronator quadratus.



THE FOREARM



99



Muscles of the back of forearm. (See Fig. no.)
Superficial group.
Brachio-radialis .
Extensor carpi radialis longior.
Extensor carpi radialis brevior.
Extensor communis digitorum.
Extensor minimi digiti.
Extensor carpi ulnaris.
Anconeus.



FIG. no. SUPERFICIAL EXTENSORS OF THE FOREARM. (Holden.)

- f



1 . Tendon of the triceps.

2. Origin of the supinator
longus or brachio-radi-
alis.

3. Extensor carpi radialis
longior.

4. Insertion of this muscle.

5. Extensor radialis bre-
vior.

6. Insertion of this muscle.

7. Extensor ossis meta-
carpi pollicis.

8. 8. Extensor brevis or
primi intemodii pollicis.

9. 9. Extensor longus or
secundi internodii pol-
licis.

10, 10. Posterior annular
ligament.

11, Extensor communis di-
gitorura.

12, 12. Attachments of the




tendons of this muscle
to the middle and distal
phalanges of the four
fingers.

13. Tendons, of the exten-
sor indicis uniting with
the tendon of the com-
munis digitorum indicis.

14. Tendon of the exten-
sor minimi digiti min-
gling posteriorly with
the tendon of the com-
munis to the little finger.

15. Extensor carpi ul-
naris.

16. Its insertion into the
metacarpal bone.

17. Anconeus.

18. Flexor carpi ulnaris
attached to the posterior
border of the ulna by
the aponeurosis.



Deep group.

Supinator radii brevis (m. supinator).

Extensor ossis metacarpi pollicis (m. abductor pollicis longus}.

Extensor brevis pollicis.



ioo THE FOREARM

Extensor longus pollicis.

Extensor indicis.

Trace out and study the arteries and nerves of the forearm.
Nerves. (See Figs, in and 112):
Internal cutaneous.
Median.

Anterior interosseous.
Ulnar.
Musculo-spiral (radialis] .

Radial.

Posterior interosseous.



FIG. in. TERMINAL PORTION OF THE MEDIAN AND ULNAR NERVES. (Holden.)
Forearm, palmar, and digital portions of these nerves. 13. Branch to the pronator
radii teres muscle. 14. Anterior muscular branches divided and removed. 15.
Branch to the flexor profundus digitorum. 16. Branch to the flexor longus pol-
licis. 17. Branch to the interosseous membrane. 18. Palmar (cutaneous) branch
divided below its origin. 19. To the thenar eminence. 20. External lateral branch
of the thumb. 21. Internal lateral branch of the same. 22. External digital branch
to the index ringer. 23. Common trunk to the index and middle fingers. 24. Digi-
tal branches from the median to the middle finger and the thumb side of the ring
finger. 25. Ulnar nerve. 26. Branch of the same nerve to the flexor profundus
digitorum. 27. Cutaneous and anastomosing filament from the ulnar. 28. Dorsal
branch of this nerve. 29. Superficial palmar branch. 30. Common trunk for the
ring and little fingers. 31. Digital branch to the internal side of the little finger. 32.
Deep palmar branch. 33. Branches from the preceding to the hypothenar eminence.
34. Branches to the fourth interosseous and fourth lumbricales. 35. Branches to the
same in the third. 36. Branches to the adductor pollicis and the muscles of the first
and second interosseous spaces. 37, 38, 39, 40. Branches of radial.



16 '



12




THE FOREARM

Arteries (Figs, in, 113, and 114):
Radial and branches.
Ulnar and branches.
Anastomosis about elbow-joint.

FIG. 112. TERMINAL BRANCHES OF THE RADIAL XERVE. (Holden.)



101



1 . Trunk of the radial nerve.

2. Its branch to brachio-

radialis.

3. Its branch to extensor car-

pi radialis longior.

4. Its branch to extensor car-

pi radialis brevior.

5. Bifurcation of the trunk.

6. Posterior or muscular

branch.

7. The same branch travers-

ing the supinator brevis
and supplying it.



8. Terminal filaments of this

division.

9, 9. Anterior or cutaneous

branch of this nerve.

10. Termination of this

branch.

11. Musculo-cutaneous n.

12. Its terminal divisions.

13. Anastomosing branch with

the cutaneous division of
the radial



IO2



THE FOREARM



THE ARTERIES OF THE FOREARM WITH THE SUPERFICIAL PALMAR ARCH.

(Morris.}



Biceps



Brachialis anticus

Tendon of biceps

Semilunar fascia of biceps

Radial recurrent artery

Supinator longus

RADIAL NERVE

Radial artery



Flexor longus pollicis



Pronator quadratus

Radial artery winding to back of
wrist under extensors of thumb



Superficiales vol(f
Superficial palmar arch




Brachial artery
Basilic rein

ULNAR NERVE

MEDIAN NERVE

Anastomolica magna
Brachial artery

INTERNAL CONDYLE



Ulnar artery
Pronator radii teres
Plexor carpi ulnaris

Flexor sublimis digitorum
Flexor carpi radialis
Palmaris longus

MEDIAN NERVE
Flexor sublimis digitorum

Ulnar artery
PISIFORM BONE

Anterior annular ligament
Palmaris brevis



THE FOREARM



103



FIG. 1 14. THE ARTERIES OF THE RIGHT FOREARM AND THE DEEP PALMAR ARCH. (Morris.)



Inferior profunda artery
Anculomotica magnet artery



Biachial artery
Radial recurrent artery .

Supinator longus
Radial artery.



Plexor longus pollicis muscle



-Brachialis anticus muscle

Anterior ulnar recurrent

l
1 Posterior ulnar recurrent

-Ulnar artery

Anterior interosseous artery
Flexor carpi ulnaris

Flexor profundus digitorum muscle
Anterior interotseou* artery



Anterior annular ligament, cut



Anterior branch of ulnar artery, cut
. Deep palmar arch

Palmar interosseous arteries
Palmar digital artery, cut thorl



Collateral branch of palmar digital artery



104



THE FOREARM



FIG. 115. THE BACK OF THE LEFT FOREARM, WITH THE POSTERIOR INTEROSSEOUS ARTERY

AND BRANCHES OF THE RADIAL AT THE BACK OF THE WRIST. (Morris.)

(From a dissection in the Hunterian Museum.)



Articular branch of superior
profumla

Brachialis antieua
Supinator lougus, cut



Common extensor tendon



Extensor carpi radialis longior
and brevior



Supinator brevis
Posterior interosseous artery



Extensor ossis metacarpi pollicis
Supinator longus, cut

Extensor primi internodii pollicis



Posterior annular ligament

Extensor carpi radialis longior

Radial artery

Dorsalis pollicis artery

Extensor secundi internodii*

pollicis

First dorsal interosseous muscle

Dorsalis indicts artery

Princeps pollicis artery



Dorsal digital artery




Triceps



Rete over olecranon
Interosseous recurrent artery

Anconeus, cut



xtensor carpi uluaris
.exor carpi ulnaris



rigin of extensor secundi and
indicator



is/erior branch of anterior interosseous

artery
terosseous membrane



terior ulnar carpal artery
ctensor carpi radialis brevior

sterior radial carpal artery

ird dorsal interosseous artery
cond dorsal interosseous artery
Metacarpal or first dorsal interosseous
artery



THE HAXD



105



HAND.



Muscles :
Palm:

Palmaris brevis.

Lumbricales.

Interossei tlwse are best exposed later. (Figs. 119 and 1 20.)

Thenar eminence. (Fig. 118.)

Abductor pollicis.

Opponens pollicis.

Flexor brevis pollicis.

Adductor pollicis.



FIG. 1 1 6. SUPERFICIAL NERVES OF THE PALM. (Ellis.) (Morris.)



MEDIAX SERVE



BRANCH TO MUSCLES
OF THUMB




COLLATERAL

BRA. \ffn.s
MEDIA*



ULSAR SERVE



COMMUSICA TIOS
BETWEEN MEDIAN
ASD ULSAR



COLLATERAL
BRANCHES OF
UJJTAJt



Hypothenar eminence. (Fig. 118.)
Abductor minimi digiti.
Flexor brevis minimi digiti.
Opponens minimi digiti.
Trace out the arteries and nerves of hand.



io6 THE HAND

Arteries. (See Figs. 114, 115 and 124):-
Superficial palmar arch.
Deep palmar arch.
Dorsal interosseous.
Dorsalis indicis.
Princeps pollicis.
Dorsal digital.



FIG. 117. A DISSECTION OF THE CUTANEOUS NERVES ON THE DORSAL ASPECT OF THE

HAND AND FINGERS. (H. St. J. B.) (Morris.)
The branches of the median nerve are shown in black.



DORSAL BRANCH
Of ULNAR




BRAXCH OF

MEDIA \
NER VE



BRANCH OF MVSCVLO-SPIRAL



RADIAL XER VE



See Figs, in, 112 and 116.
Nerves :

Median.

Ulnar.

Radial.



THE HAND



107



. THE SUPERFICIAL MUSCLES OF THE PALM OF THE HAND. (Morris.)




Flexor carpi radialis



Extensor ossis metacarpi pollicis



Opponens pollicis



Abductor pollicis



Flexor brevis pollicis



Adductor pollicis



First lum-

bricalis

First dorsal

interoe-

seous



Ligamentum vaginale

Flexor sublimis digitorum



Flexor profundus digitorum



Flexor profundus
digitorum



io8



THE HAND

FIG 119. THE PALMAR INTEROSSEI. (Morris.}




FIG. 120. THE DORSAL INTEROSSEI. (Morris.}




After completing the dissection of the forearm, wrist, and hand place the
parts in their proper position and study the relation each part bears to its sur-
roundings.



ANASTOMOSES OF ARTERIES OF UPPER EXTREMITY



109



Examine the anastomoses of the arteries of the upper extremity shown
in the following figures.



FIG. 121. THE ANASTOMOSES ABOUT THE SCAPULA. (Morris.)

Snliscnpitlar branch <>J suprascnpitlar artery
Sttpraspinous branch of suprascapular artery



Posterior scapular artenj



Supraitfiinaus branch
of posterior scapular
artery

Subscapular branch
of posterior sc/apular
artery



Branch of intercostal
artery



Branch of intercostal

artery

Continuation of posterior
scapular artery




Suprascapular artery



Acromial branch
ofacrontio-
thoracic

Acromial rete



bscapular branch

of suprasca imlur

artery
Infraspinous branch

of suprascupular

artery
Sttbxcafmlar branch

of axillary artery



Dorsal scapular branch of
subscapnlar artery



Infrascajnilar branch nf
dorsal scapular artery



Continuation of tub-
scapular artery



no ANASTOMOSES OF ARTERIES OF UPPER EXTREMITY



FIG. 122. DIAGRAM OF THE ANASTOMOSES OF THE BRACHIAL ARTERY
(MacCormac and Anderson.) (Morris.)



Anterior circumflex
Posterior circumflex



Superior radial collateral (exces-
sively large)



Superior profunda



External posterior articular branch
of superior nrojunda



External anterior articular branch
of superior profunda



Posterior inlerosseous recurrent



Radial recurrent
Posterior interosseous recurrent



A cromio-thoracic
Long thoracic

Subscapular
Dorsalis scapulae




Posterior scapular



Anaslomotica magna

Transverse branch of anastomotica magna

Anastomosis of anterior ulnar recurrent with
anaslomotic



Anastomosis of posterior ulnar recurrent with

anaslomotic

( Anterior ulnar recurrent

Posterior ulnar recurrent



Posterior interosseous from common interosseous of ulnar



ANASTOMOSES OF ARTERIES OF UPPER EXTREMITY



FIG. 123. DIAGRAM OF THE RELATION OF THE ARTERIES OF THE LEFT FOREARM TO THE
BONES. (Walsham.) (Morris.)



Inferior profunda artery
Brachial artery



Anastomolica magna artery

Anterior ulnar recurrent
Posterior ulnar recurrent

Ulnar artery
Common interosseous artery



Anterior interosseous artery



Anterior ulnar carpal

Superficial branch of ulnar artery
(superficial palmar arch)

First palmar digital artery




Superior profunda artery



EXTERNAL CONOVLE

Articular branch of superior
profunda artery

Radial recurrent artery
Interosseous recurrent artery

Radial artery
- Oblique ligament



Interosseous membrane
Posterior interosseous artery



Anterior radial carpal
Radial artery at wrist

Superficial volar branch of
radial artery



lmar arch



ANASTOMOSES OF ARTERIES OF UPPER EXTREMITY



FIG. 124. ANASTOMOSES AND DISTRIBUTION OF THE ARTERIES OF THE HAND. (Walsham.)

(Morris.)



Anterior interosseous

Radial artery

Anterior radial carpal



Superficial volar
Posterior radial carpal
Radial artery at wrist



Dorsalis pollicis

Metacarpnl or

first dorsal

interosseous

Princeps pollicis



Dorsalis indicis



Radialis itnlicis




First dorsal branch of collateral
digital



Second dorsal branch of collateral
digital



Anastomosis of collateral digital
arteries about matrix of nail
and pulp of finger



Ulnar artery

/L_ Anterior ulnar
carpal

Posterior ti/nar
carpal



Deep ulnar
Superficial arch

Carpal recurrent

Posterior comnttnn-
cnting or perforat-
ing

Palmar interosseous



Second, third, and
fourth pulmar
digital

Second and third
dorsal intei'osxeoits

First palmar digital



Anterior comnwni-
rntiity or perforat-
ing



ARTICULATIONS



DEMONSTRATION XVI.

ARTICULATIONS AND LIGAMENTS.

Classes of articulations.

Various movements of joints.

Expose the ligaments in the following articulations:

Articulations of vertebral column.

1. Connecting the bodies of the vertebras.

2. Connecting the laminas.

3. Connecting the articular processes.

4. Connecting the spinous processes.

5. Connecting transverse processes.



FIG. 125. POSTERIOR VIEW OF THE STERNO-COSTO-CLAVICULAR JOINT. (Morris.}



Posterior
portion of

Interclavicular capsule
ligament



Rhomboid
ligament




Sterno-costo-clavicular.

Scapulo-clavicular.

Shoulder- joint.

Elbow-joint.

Radius with ulna.

Radio-carpal.

Carpal.

Carpo-metacarpal.

Interphalangeal.



ARTICULATIONS



FIG. 126. ANTERIOR VIEW OF STERNO-COSTO-CLAVICULAR JOINT. (Morris.)




FIG. 127 .SECTION THROUGH STERNO-CLAVICULAR JOINT. (Morris.)



The Jaterarticular
flbro-cartilage



The joint between
the sternum and
second costal car-
tilage




ARTICULATIOXS



FIG. 128. ANTERIOR VIEW OF SHOULDER, SHOWING ALSO CORACO-CLAVICULAR AND CORACO-

ACROMIAL LIGAMENTS. (Morris.)



Conoid ligament



Transverse scapular ligament



Trapezoid ligament




Coraeo-acromial ligament

^ Short head of biceps

Subscapular tendon

Capsule of shoulder



Long tendon of
biceps



FIG. 129. POSTERIOR VIEW OF THE SHOULDER-JOINT, SHOWING ALSO THE ACROMIO-CLAVI-

CULAR JOINT AND THE SPECIAL LlGAMENTS OF THE SCAPULA. (Morris.)



Conoid ligament



Acromio-clavicular
ligament



Tendon of infra-
spinatus and teres
minor



Transverse ligament




ARTICULATIONS



FIG. 130. VERTICAL SECTION THROUGH THE SHOULDER-JOINT TO SHOW THE GLENO-

HUMERAL LIGAMENT. (Morris.}
(The joint is opened from behind.)



Supra-spinatuB
muscle

Subacromial bursa
Tendon of biceps

with gleno-hume-

ral ligament
Tendon of subsca- _
oularis



Capsular ligament




Suprascapular
ligament



Olenoid ligament or nbro-cartilage



FIG. 131. INTERNAL VIEW OF THE ELBOW-JOINT. (Morris.)




Oblique
ligament

Upper edge
of inter-
osseous
membrane



ARTICULATIONS



117



FIG. 132. EXTERNAL VIEW OF THE ELBOW-JOINT. (Morris.}

k




Orbicular ligament



External lateral
ligament



Posterior ".igament



FIG. 133. ANTERIOR VIEW OF WRIST. (



Anterior radio-ulnar
ligament

Internal lateral liga-
ment of wriat
Plexor carpi ulnaris




External lateral ligament

of wrist
Anterior radio-carpal

ligament

Tendon of flexor carpi
radialis



Capsular ligament of first
carpo-metacarpal joint



u8



ARTICULATIONS



FIG. 134. POSTERIOR VIEW OF WRIST. (Morris.)



Posterior radio-carpal

ligament



Capsule of carpo-meta-
carpal joint of thumb




Posterior radio-

ulnar ligament



Internal lateral
ligament of wrist



FIG. 135. ANTERIOR AND POSTERIOR VIEW OF LIGAMENTS OF THE FINGERS. (Morris.)



Transverse ligament
between the heads
of the metacarpal
bones

Glenoid ligament
Lateral ligament



Areolar tissue
capsule

Lateral ligament



Glenoid ligament
Lateral ligament



Flexor tendon



Flexor tendon



Areolar tissue

capsule
Lateral ligament

Extensor tendon



Slips of the extensor .
tendon



ARTICULATIONS



119



FIG. 136. SYNOVIAL MEMBRANES OF WRIST, HAND, AND FINGERS. (Morris.)



Synovial sac of the inferior radio-
uluar joint



Synovial sac of the carpus



Synovial sac, occasionally separate,
for the fourth and fifth metacar-
pal bones




Lateral ligaments of the metacarpo-
phalaugeal, and iuter-phalangeal
joints



Study the nerve- and blood-supply of each joint.



I2O



CUTANEOUS NERVES



Showing the cutaneous nerve supply of the body.



FIG. 137. DIAGRAM OF THE CUTANEOUS NERVE AREAS OF THE HEAD AND NECK. (Morris.)



SMALLEST
OCCIPITAL



X INFRA (
ORITAL\t



DESCENDING CER VfCA L




SMALL \.
OCCIPITAL



TEMPORAL

SUPRA
T ROC H LEAR

LACHRYMAL

INFRA
ROC H LEAR



NASAL



CUTANEOUS XERVES



FIG. 138. DIAGRAM SHOWING THE AREAS OF DISTRIBUTION OF CUTANEOUS NERVES.

(Morris,)

HEAD:

Red First division of fifth, \\hite Second division of fifth. Blue Third division of fifth. Dark area Posterior
primary divisions of cervical nerves. Oblique and transverse shading Branches of cervical plexus.

BOD* AND LIMBS:

Red Anterior divisions of anterior primary branches. Blue Posterior di visions of anterior primary branches. Two
colors in one area indicate that the area is supplied by two sets of nerves, and it should be understood _that
wherever two nerve areas approach each other they overlap. The dotted blue area of small sciatic indi-
cates that the nerve comes from the posterior as well as from the anterior parts of anterior primary divisions
of sacral nerves, but it supplies a flexor area. The area of the perforating cutaneous nerve is left uncoloured
because its true nature is uncertain. Dark shading Posterior primary divisions. The numbers and initial
letters refer to the nerve-roots from which the nerves are derived.



Front



Back



Itt DIVISION OF 5th -



3d DIVISION OF oth -

td DIVISION OF oth

GREA T A URICULAR

t,3C, SUPERFICIAL CERVICAL



SUPERFICIAL
DESCEXDIXG CERV.

CIRCUMFLEX
LATERAL fTTAXEOUS
JKKSKB8

AXTERluR CUTAXE-
- XERVE*



IXTEKXAL CCTAXg-
t.V/> fXTERCOSTO-BC-

MERAL, I. S D

CPPER EXTERNAL CCTAXB- _.
OL'S OF MCSCI'LO-SPIRAL

IXTERXALCUTAXEOUS -



MUSCULO-CUTAXEOUS



EXTERXA L
CUTANEOUS



GEXITO-CRURAL
RADIAL, 6 C

IXGI'IXAL. I L
If ED I AX, g, 7, S C, I D -

ULXAR, 1 D ~.



IXTERXA L CUT A XEO US
MIDDLE CUTANEOUS



EXTERNAL POPLITEAL ~
IXTERXAL SAPHEXOUS -




SUPRAORBITAL

GREAT OCCIPITAL
SMALL OCCIPITAL
SMALLEST OCCIPITAL
GREA T A URICULAR

POSTERIOR PRIMARY Diri-
SIOA'S OF CERVICAL SERVES



SUPERFICIAL DE-
1>ISG CERVI-
CAL,:, UC

CIRCUMFLEX, 5, 6 C

LATERAL BRAXCHES OF
DORSAL XERTES

UPPER ESTERXAL CCTAXX-
OCS OF MrSCVLO-SPIRAL

IXTERCOSTO-Hl'MERAL AXD
LESSER 1XT. CrTAXEOCS

IXTERXAL Cl'TAXBOCS OF
MrSCCLO-SPIRAL



LOWER E.TTERXAL OF



'LO-CUTAXEOUS



EXTERNAL SAPHEXOUS

AXTERIOR TIBIA L ~~

IXTERXAL PLA.\TAR



IXTERXAL CCTAXEOCS
POSTERIOR PRIMARY
LL'MBAR

LATERAL CCTAXKOCS OF

ILIO-HTPOGA S TRir

. s.tc



POSTERIOR PRIM. SACRAL
PERFORA TIXO
CCTAXEOCS OF td
AKD 3d SACRAL

l'L\AS,8C

- A DIAL, 6,7 C

AREA SUPPLIED BT

RADIAL Axr> I-LXAX
XERTSS

ir. - JfEDfAX, 6, 7, 8 C,
ID



EXTERXAL CUTAXEOUS

SMALL SCIATIC



IXTERXA L CUT A XFO US A XD
OBTURATOR



EXTERXAL POPLITEA L,5 L,1,SS
IXTERXAL SAPHEXOUS, 3, U L

EXTERXAL SAPHEXOUS, 1, 1 S



CALCAXEO-PLAXTAR (Post-
tihial), 1,SS



EXTERXAL PL A XT A R, 1, t S
IXTERXAL PLAXTAR, ' 5 L,1S



122



TRANSVERSE SECTIONS



An examination of the following figures will help to understand and
remember the relative positions of the structures exposed by the sections.


1 2 3 5 7 8 9 10 11

Online LibrarySimon Menno YutzyA manual and atlas of dissection → online text (page 5 of 11)