Simon Menno Yutzy.

A manual and atlas of dissection online

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giving off its descending branch the princeps ceruicis. 14. Suboccipital nerve. 15.
Third cervical nerve (posterior branch).




SUBOCCIPITAL TRIANGLE.



Muscles :

Rectus capitis posticus major.

Rectus capitis posticus minor.

Obliquus capitis inferior.

Obliquus capitis superior.
Xerves :

First cervical (suboccipitalis).

Second cervical.

Great occipital.
Arteries :

Vertebral. (See Fig. 49.)

Occipital.

Princeps cervicis.

Deep cervical.



68



PECTORAL REGION



DEMONSTRATION XII.

PECTORAL AND AXILLARY REGION.

Examine in the articulated skeleton the position of the following

Clavicle. Sternum.

Scapula and processes.

Shoulder joint.

Ribs. Costal cartilages.
Outline position of the heart. (Fig. 85.)

FIG. 77. THE PECTORALIS MAJOR AND DELTOID. (Morris.)




Biceps



Terse major



Serratus magnus



I Aponeurosis of external oblique



External intercostal



Place the cadaver upon its back, draw the arm out to a right angle with the
trunk, then make a vertical incision through the skin in the median line from
the upper to the lower part of the sternum; a second incision from the ensi-
form cartilage along the inner fold of the axilla to the deltoid muscle; a third
incision from the middle of the clavicle along the anterior part of the upper
third of the arm. Remove the skin from the pectoral region, turn it outward
from the upper arm, outward and backward from the axilla.

Note and study the superficial fascia, pectoral fascia, clavi-pectoral
fascia, costo-coracoid membrane, and axillary fascia.



PECTORAL REGION AND AXILLA 69

Study superficial nerves. (See Fig. 81.)
Study mammary gland.

Study the lymphatics of the thorax, upper extremity, and axilla.
Expose and study the pectoralis major muscle. (Fig. 77.)
Detach this muscle from its origin and turn it outward. See the an-
terior thoracic nerves as they enter the muscle on the posterior surface.
Clean and study the pectoralis minor muscle. (See Fig. 78.)
Detach this muscle from its origin and turn it outward.
Clean and study the subclavius muscle. (See Fig. 79.)
Clean and study:
Nerves :

Anterior thoracic.
External.
Internal.
Dorsal. (Fig. 80.)

Anterior primary divisions.
Lateral.
Anterior.

Intercosto-humeral (Fig. 81) this lateral branch of the
second dorsal passes out from the second intercostal space
to the arm.

Expose the brachial plexus and notice the relation the cord and larger
branches bear to the blood-vessels. (Figs. 94, 98, 100.)
Arteries :

Perforating branches of internal mammary. (Fig. 82.)
Axillary and branches. (See Fig. 83.)
Veins :

Axillary and tributaries.

Expose and study the serratus magnus muscle (M. serratus anterior).
(Fig. 84.)

Review carefully the lymphatic nodes and afferent and efferent vessels
of the axilla.

When all the structures in the axilla are exposed study their relative
positions to each other and to surrounding parts.



7 o



PECTORAL REGION



FIG. 78. THE PECTORALIS MINOR, OBLIQUUS INTERNUS, PYRAMIDALIS, AND RECTUS AB-

DOMINIS. (Morris.}



Subscapularis



Pectoralis minor




Pectoralis major
77 Teres major



Internal oblique



Pyramidalis
Conjoined tendon



PECTORAL REGION



7 1



FIG. 79. THE SUBCLAVICS AND THE UPPER PORTION* OF THE SERRATUS MAGNUS. (Morris.)




Subclavius



Serratus magnos



\



FIG. 80. DIAGRAM OF THE DISTRIBUTION OF A TYPICAL DORSAL NERVE. (Morris.)



INTERNAL BRANrif

Longiasirnus Dorsi



Semispinalis Dorsi
Multifldua Spinae

Superior Costo-transverse

Ligament
POSTERIOR ROOT

ANTERIOR ROOTJ
RECURRENT BRANCH
SYMPA THETIC GANGLION

EFFERENT BRA NC1I

BR ASCII TO AORTA

(Esophagus



Internal Mammary Artery
Triaugularis Sterni




AccesBOrius

EXTERNAL BRANCH

POSTERIOR PRIMARY
DIVISION
ANTERIOR PRIMARY

Dl VISION
Internal Intercostal Muscle

External Intercostal Muscle



LATERAL BRANCH



ANTERIOR BRANCH



Anterior Intercostal Membrane



7 2



PECTORAL REGION



FIG. 81. CUTANEOUS NERVES OF THE THORAX AND ABDOMEN, VIEWED FROM THE SIDE.

(After Henle.) (Morris.)



Fectoralis major



SUPRA CLA VTCULAR
BRANCH OF
CERVICAL PLEXUS



Pectoralis minor rr



INTERCOSTO-
HUMERAL



11 !;I**#!TJ Latissimus dorsi



Sheath of rectus



ANTERIOR

CUTANEOUS OF
LAST THORACIC



ILIO-
HYPOGASTRIC



ILIO-INGUINAL



Serratus magnus




Ezternal oblique



LATERAL CUTANEOUS
OF LAST THORACIC
NERVE



IXTERXAL MAMMARY ARTERY



73



FIG. 82. SCHEME OF THE RIGHT INTERNAL MAMMARY ARTERY. (Walsham.) (Morris.)

Common carotid artery



PHREXLC XER VE

Sabclarian artery

Subclavian i-ein, cut



Anterior intercostal branch



Anterior intercostal branch



Mutcvlo-phrenic artery



Deep circumflex iliac artery




Internal jugular vein
Subclarian rein, cut
Scalenua anticus muscle

STERNUM

Triangularis sterni muscle
Perforating branch



Superior epigattric artery



Deep epigattric artery



FIG. 83. DIAGRAM OF AXILLA. (Holden.)

i. Axillary artery. 2. Brachial artery. 3. Thoracica humeraria artery. 4. Superior
thoracic artery. 5. Subscapular artery. 6. Dorsalis scapulae artery. 7. Posterior
circumflex artery. 8. Superior profunda artery. 9. Posterior thoracic nerve. 10.
Long subscapular nerve, n. Median nerve. 12. Cephalic vein. 13. Musculo-cuta-
neous nerve. 14. Teres major.




FIG. 84. SERRATUS MAGNUS. (Morris.}



Upper part of

eerratus magnus



Middle part



Lower part




74



THORAX



75



DEMONSTRATION XIII.

THORAX AND THORACIC VISCERA.

Study the thorax in the articulated skeleton. Note:

Cavity of thorax.

Superior aperture.

Inferior aperture.

Costal arches.

Intercostal spaces.

Locate the position of heart and its valves.

Xow cut the costal cartilages where they join the ribs and remove them
with the sternum. Do this with care so as not to destroy the structures
beneath.

Xote and study internal mammary artery and branches. (See Fig. 82.)



FIG. 85. SHOWING THE POSITION OF THE HEART AND ITS VALVES IN RELATION TO THE

CHEST WALLS. (Morris.)

(Reduced from Hensman and Fisher's Anatomical Outlines.)

(The right auricle and ventricle, with the pulmonary semilunar and tricuspid valves, are
outlined in blue tints; whilst the left auricle and ventricle, with their corresponding
valves, are indicated in red.)




7 6



THORAX



FIG. 86. ANTERIOR VIEW OF THE THORAX WITH CHEST WALL REMOVED, SHOWING THE
LUNGS. (Modified from Bourgery.) (Morris.}



CLAVICLE



Pectoralis major muscle
Peetoralis minor muscla

SUPERIOR LOBE



Serratus magnua
muacle




MIDDLE LOBE



Diaphragm

STERNUM



ENSIFORM CARTILAGE



Trace as far as possible and study the pericardium.

Trace as far as possible and study the pleura.

Mediastinal space. What is it?

Study the thymus gland. (See Fig. 35.)

Study the position and relation of the heart, large blood-vessels, lungs,
trachea, bronchi, and oesophagus. (Figs. 87, 88, 92.)

Trace the phrenic nerve down between the pericardium and pleura.
(Fig. 88.)

Trace the vagus nerve down to the pulmonary plexus. (Figs. 88 and 89.)

Remove the heart and lungs. Cut the arch of the aorta just beyond
the origin of the left subclavian artery. Cut the pericardium from the
diaphragm. Lay the heart and lungs aside and dissect out and study the
following :



Muscles :

Intercostal.
External.
Internal.
Diaphragm.
Dorsal, or intercostal nerves. (See Fig. 80.)



Infracostalis (Mm. subcostales] .
Triangularis sterni (M. transversus thoracis}.
Levatores costarum.



THORACIC VISCERA



77



FIG. 87. ANTERIOR VIKW OF THE LUNGS; PERICARDIUM. (Modified from Bourgery.)

(Morris.)



Vena cava superior



BRONCHUS

Pulmonary artery
Pulmonary vein



Arch. of aorta

Pulmonary artery
BRONCHUS
Pulmonary vein




ENSIFORM CARTILAGE



THORACIC VISCERA



FIG. 88. THE ARCH OF THE AORTA
OF THE AORTA.

RIGHT RECUR-
RENT LA RYN-
GEAL NERVE

Transverse cervical

artery
Right common carotid

artery
Suprascapular artery

Internal jugular vein

PNEUMOGASTRIC
NERVE
Stibclavian vein

Inferior thyroid vein

PHRENIC NER VE

Left innominate vein

Ascending aorta

Superior vena cava
RIGHT BRONCHUS

Branch to superior lobe

of lung

Upper branch of right

pulmonary //////

Branch to middle lobe

of lung
Right pulmonary vein

RIGHT AURICLE

Right coronary artery
Lower branch of right
pulmonary ///'///
THORACIC VERTEBRA

Intercostal vein
Intercostal artery
Vena azygos major

Intercostal vein
Intercostal artery

Intercostal vein
Intercostal artery



WITH THE PULMONARY ARTERY AND CHIEF BRANCHES
(Morris.). Also see Fig. 96.




THYROID BODY
LEFT RECURRENT
LARYNGEAL
NER VE
1'NEIMOGASTRIC

NER VE
Left internal jugular

vein
Left common carotid

artery
Left subclavian artery

Left subclavian vein

TRACHEA

Inferior thyroid vein

PHRENIC NKR VE

(huokeil aside)
RECURRENT
J.MiYNGEAL
NERVE

PNEUMOGASTRIC
NERVE

DUCTUS ARTERIOSU8

Lqft pulmonary artery

Pulmonary artery

Right pulmonary
artery

LEFT BRONCHUS

Left coronary artery

f'jtpi'i- left pulmonary

vein
RIGHT VENTRICLE

(Conus arteriosus)
Ltiii-rr left iniliiiimtiry

artery
Lover left /mlmonary

rein

(ESOPHAGUS
(hooked aside^



THORACIC DUCT
Thoracic aorta



VAGUS AXD SYMPATHETIC XERVES



79



FIG. 89. THE CERVICAL PORTION- OF THE SYMPATHETIC AND THE
PNEUMOGASTRIC NERVE. VIEWED FROM BEHIND. (Krause.)
Fig. 88.



DISTRIBUTION OF THE
(Morris.') Also see



Stylo-hyoid



Ligamentum pharyngeum

1X1



Posterior belly of
digastric



Sterno-mastoid

Rectus capitis
anticus major

Stylo-pharyngeie

Stylo-gloss us

Internal pterygoid

SUPERIOR
CERVICAL
GAXGLIUS

Middle constrictor

Common carotid
artery

Inferior constrictor



THYROIHEl'M
I RIETY)

THYROID GLAND



Inferior thyroid

artery
Subclarian arltry



RECURRENT

LARYXGEAI.

A'ERl'E



Thoracic aorta



Crus of diaphragm




Internal carotid

artery
RIGHT
SYMPA THETIC

Occipital artery

Posterior belly of
digastric



DESCENDERS

HYPOGLOSSI

Common carotid
artery

Sterno-mastoid

TWIG OF
RECl'RREXT
LARYSGEAL TO
PHARYSGEAL
PLEXUS



Thyroid axis

INFERIOR
CERVICAL
GAXGLIOS



RECCRREXT
LARYXGEAL



PLEXUS Gl'LJE



RIGHT
PSEUMOGASTRIC



8o



THE HEART



FIG. 90. ANTERIOR VIEW OF THE RIGHT CHAMBERS OF THE HEART, WITH THE GREAT

VESSELS. (Morris.)



Left subclavian



Arch of Aorta
Vena cava superior



RIGHT AURICULAR

APPENDIX \^

Orifice of vein j

of Galen \l



ANNULUS OVALIS




Right pulmonary artery
Duclus arteriosus

Left pulmonary artery

\onary artery

onary semilunar valves



AURICULAR APPENDIX



papillary muscle connected
vmh septum



(1) Columna carnea
/ CHORD* TENDINE/E



Anterior papillary
muscle



Left coronary artery



Vena cava inferior
ANTERIOR SEGMENT OF TRICUSPID VALVE



RIGHT SEGMENT OF TRICUSPIO VALVE

SECTION OF VENTRICULAR WALL



Vena cava inferior



Posterior papil- (2) Columna carnea
lary muscle



HEART AXD LUXGS 81

HEART.

Study the heart :
Position.
Size and weight.
Auriculo-ventricular groove.
Interventricular groove or coronary sulcus.
Coronary arteries.

Dissect the heart. Make an incision as shown in figure 90.
Also make a dissection of the heart of an ox or sheep.
Examine and study carefully the whole of the exterior and interior of
the heart.

What is its nerve- and blood-supply?
Study the foetal heart and foetal circulation. (Fig. 91.)
Expose and study pulmonary arteries and pulmonary veins. (See Figs.
87 and 88.)

Expose and study:

Aorta (See Figs. 90, 92):
Branches of arch:
Coronary.
Innominate.
Left common carotid.
Left subclavian.
Thyroidea ima.

Branches of descending aorta in thorax.
Pericardiac. Intercostal.

Bronchial. Diaphragmatic.

(Esophageal.

Superior intercostal artery. (See Fig. 93.)
Veins (See Fig. 88) :

Innominate right. Superior vena cava.

Innominate left. Azygos and tributaries. (Fig. 92.)

Internal mammary. Spinal veins. (Fig. 94.)

Superior intercostal.

Expose and study thoracic duct. (See Fig. 92.)
Clean and study the thoracic gangliated cord.

LUNGS.

Xote the position in the thorax, upper and lower boundaries. (See
Figs. 86 and 87.)

Describe the lungs.

What is the blood- and nerve-supply?'

Study the trachea and bronchi. (Fig. 87.)

Xote the relation of oesophagus to the trachea. Study oesophagus.

Study the articulations of the ribs with the vertebrae, and the cartilages
with the ribs and sternum.



82



FCETAL CIRCULATION



FIG. 91. THE HEART, WITH THE ARCH OF THE AORTA, THE PULMONARY ARTERY, THE
DUCTUS ARTERIOSUS, AND THE VESSELS CONCERNED IN THE FCETAL CIRCULATION.
(Morris.}
(From a preparation of a fetus in the Museum of St. Bartholomew's Hospital.)



Right innominate vein

Vena cava superior
Right pulmonary artery



Vena cava inferior



Left branch of portal vein
DUCTUS VENOSUS



Umbilical vein

Portal vein

Right branch of
portal vein



Umbilical vein
Umbilical arteries

Jfypogastric artery




Left innominate
rein



Arch of aorta

DUCTUS ARTERIOSUS

Left pulmonary
artery



Descending aorta



Superior

mesenteric artery



Splenic vein

Superior
mesenteric vein



Inferior

mesenteric artery



_jj|j. Left common iliac

~^'; ( > artery



Internal iliac arii'nj

External iliac artfrij






AORTA, VEINS, AND THORACIC DUCT



FIG. 92. THE ARCH OF THE AORTA, THE THORACIC AORTA, AND THE ABDOMINAL AORTA,
WITH THE SUPERIOR AND INFERIOR VENA CAVA AND THE INNOMINATE AND AZYGOS
VEINS. (Morris.)



Right common carotid

artery
Right internal jugular



RIGHT LYMPHATIC DUCT

Innominate artery

RIGHT PJTXUMO-

GASTRIC SERVE

Right innominate rf.in

Internal mammary vein

Trunk of the pericardiac
and thyniic reins
Vena cata superior



Vena azygos major



Vena azygos minor, cross-
ing spine to enter rena
azygot major

Hepatic reim



Vena cava inferior

Right phrenic artery
Caeliac axis

Right middle suprarenal
artery



Right spermatic artery
Right spermatic vein




Left common carotid
artery



TRIC SER VE
THORACIC DUCT
Left innominate vein
Left subclai'ian artery



Left superior intercostal

rein

RECURRENT
LARYSGEAL
SERVE



Vena azygos tertius

ESOPHAGUS

Left upper azygos rein

(Etophageal branches
from aorta

Vena azygos minor



THORACIC DUCT



Left phrenic artery

Left middle suprarenal
artery

RECEPTACULUM CHYLI

Superior mesenteric
artery

Left ascending lumbar

rein
Left spermatic vessels



Inferior mesenteric
artery



8 4



ARTERIES AND VEINS



FIG. 93. SCHEME OF THE RIGHT SUPERIOR INTERCOSTAL ARTERY. (Walsham.)

(Morris.}



Scalenus anticus muscle

Deep cervical branch

FIRST DORSAL NERVE



FIRST INTERCOSTAL
NERVE

Subclavian artery



SECOND INTERCOSTAL
NER VE



Anterior intercostal

artery

THIRD INTER-
COSTAL NERVE



Anterior intercostal
artery

Internal mammary
artery

Intercostal vessels of
third space




SYMPA THETIC
NER VE



INFERIOR CERVI-
CAL GANGLION

\ Superior intercostal
) artery



Arteria qperrans



Branch from first aortic
intercostal



Arteria aberrant



First aortic intercostal
artery



Second aortic intercostal
artery



Intercostal vessels of fourth space



FIG. 94. THE SPINAL VEINS. (Morris.}



ACCESSORY PRO-
CESS OR TIP
OF THE TRUE
TRANSVERSE
PROCESS

COSTAL ELEMENT

Posterior transverse

branch



Vein from cord
Transverse branc

A nlerwr transfers
vein

Lumbar vein



Dorsal spinal plexus




I'll.ltfl-ilir IdllljillKlilKll
l r, in

Lateral transverse

branch

Anterior /onr/i/in/ii/ril
spinal vein seen in
fiction

Veins from body of
vtriebra



Anterior spinal plexus






SHOULDER AND ARM 85

DEMONSTRATION XIV.

SHOULDER AND ARM.

Sever the spinal column above and below the brachial plexus; then saw
the piece thus severed through the middle, lengthwise.



FIG. 95. THE BRACHIAL ARTERY, LEFT SIDE. (Morris.)
(From a dissection in the Museum of the Royal College of Surgeons )



Supratcajmlar artery and nerve



Subscapular vessels



CIRCUMFLEX
XER VE



SUBSCAPULAR ^

SER VE




Axillary artery and

vein

MUSCULO-CUTA-
XEOUS and in-
ternally outer
head of MEDIAN

XR VE

~ One of the brachial
veins



Coraeo-brachialis



Triceps



ULNAR NERVE

Triceps

Inferior profunda artery



IXTERXA L CUTA XEO US
NEBVB

Brachial artery

MEDIAN NEE VE



Ulnar artery




Biceps



Cephalic vein
Anastomotica magna artery



MUSCUL O-CUTA NEO US
NER VE



Supinator longua
Radial rein



Median vein



Radial artery



86



SHOULDER AND ARM



FIG. 96. SUPERFICIAL VEINS AND LYMPHATICS OF THE LEFT FOREARM AND ARM.

(Walsham.) (Morris.)



Fectoralis major, hooked up



External jvgular vein



Pectoralis major



Lymphatics from side of chest



Pectoral glands



Basilic vein



Epitrochlear gland ,^_ _^___^
ial ulnar '"/ ~^-.



Posterior superficia

vein
Median basilic vein
Inner set of superficial lym-
phatics of forearm

Deep median vein

INTERNAL CUTANEOUS
NERVE

Anterior superficial ulnar
vein



Median set of superficial lym- .
phatics of forearm




Supraclariciilar gland
Jugulo-cephalic vein

Deltoid muscle

LymphaHet lu-i-uinjianying

vephulir ri in

- Axillary glaiula
Cephalic vein



Lymphatic i-exxfls of inner
side of arm



Biceps, exposed

MUSCULO-CUTANEOUS
NER VE

lilitl artery
Bicipital fascia
Median cephalic vein

Superficial radial vein
Superficial median rein



Outer set of superficial lym-
phatic vessels of forearm



SHOULDER AND ARM 87

Study on the skeleton the bones of the shoulder- and elbow-joints.

Outline arteries, superficial veins, and superficial nerves. (See Figs.
95, 96, and 97.)

Dissection. -Make an incision down the anterior part of the arm to
inches below the elbow; turn the skin outward and inward, exposing the
superficial fascia, veins, and nerves.

Study the superficial and deep fascia and lymphatics. Xote the epi-
trochlear gland. (Fig. 96.)



FIG. 97. DISTRIBUTION OF CUTANEOUS NERVES ON THE ANTERIOR AND POSTERIOR ASPECTS
OF THE SUPERIOR EXTREMITY. (Morris.)



IXTERXAL
CUTAXEOCS OP

Ml'?'

SPIRAL



IXTER.VA L
Cl'TAXEUl'S



PALMAR

'TTAXEOrS OF
MSDIAA'

PALMAR

fTTAXEOl'ii OF
L'LXAB




SUPRA-
ACBOMIAL



CIRCUMFLEX

IXTERCOSTO-
HUMERAL

TWIG OP

IXTERXAL
CUTAXEOCS

EXTERXAL
CUTAXEOl'S OP

MCSCCLO-

SPIRAL



MT'SCULO-
CUTASEOUS



PALMAR
< I'TAXEOUS
OF RADIAL




SUPRA-
ACROMIAL



EXTERXAL

CUTAXEOVS

OF

JtrsccLO-
SPIRAL



xrscrLO-

CCTAXSOCS



IXTERXAL
CUTANEOUS OP

MCSCULO-

SPIRAL
IXTERCOSTO-

BUJfERAL



XERVE OF
WRISBERG



IXTERNAL
CUTANEOUS



RADIAL



ULXAR



Clean and study the following:
Veins (see Fig. 96):
Cephalic.

Median cephalic.
Basilic. (See Fig. 95.)
Median basilic.



88



SHOULDER AND ARM



Bicipital fascia. (See Fig. 98.)

Note the relative positions of the veins, arteries, and nerves in front
of the elbow.

Review the subclavian and axillary arteries. Then trace out the:
Brachial artery and its branches. (Fig. 99.)
Brachial veins and tributaries.



FIG. 98. THE BEND OF THE ELBOW, LEFT SIDE. (Morris.)
(From a dissection by Dr. Alder Smith in the Museum of St. Bartholomew's Hospital.)



MEDIAN NERVE
Posterior branch of
anastomotica magna
BRANCHES OF
INTERNAL CUTA-
NEOUS NERVE

Posterior ulnar vein



Brachialis antieus

Anterior branch of
anastomolica magna '
Anterior ulnar veil.



Median basilic vein

MUSCULAR BRANCH
OF MEDIAN NERVE

Tendon of biceps
Bicipital fascia

Brachialis antieus

Deep median vein

Ulnar artery

Pronator teres



Radial artery




Biceps
Internal vena

C/l/tll'X I if

liriK'liiul nr/ery
Basilic n'in

Brachialis
antieus



Brachial artery
EXTERNAL

ffTANEOrS
NERVE

Mvseiilo-ffiiral
n. and afi-i'mliinj
branch of nidinl
recurrent urt'Tit
I'udial vein
Median cephalic

rein

Asi-finling br. of
radial recurrent
RADIAL



JRiiilial recurrent

artery

Supinator
longus
DetceiuUng br.

of radial
recurrent
Median vein



RADIAL
NERVE



SHOULDER AND ARM



FIG. 99. THE LOWER PART OF THE AXILLARY, THE BRACHIAL, AND THE RADIAL AND

ULNAR ARTERIES, RIGHT SIDE. (Morris.)
(From a dissection in the Museum of the Royal College of Surgeons of England.)



BRACHIAL PLEXUS



HEAD OF HUMERUS
Pectoralis minor, turned back

ML'SCUL 0-CUTA SEO US NER VE

BRANCH OF Mrt'TLO-CUTA-

NEOUS TO MEIUAS SERVE

Coraco-brachialis



Brachial artery

Superior prof undo artery
Biceps



MUSCULO-CUTANEOUS NERVE

BRA ycit OF MUSCULO-CUTA-
NEOUS NERVE TO BRACHI-
ALIS ANTICUS

Brachialia anticus
MEDIA S SERVE

Inner brachial vena comes
MUSCULO-SPIRAL NERVE

Radial recurrent artery
Supinator longus

Superficial median rein, cut short



Pronator radii teres, superficial
bead, cut



RADIAL NERVE .



Rudial artery

ixor sublitnia
rum

MEDI AS SERVE



Cut edge of flexor sublimis
digitorum



Flexor longus pollicis




Subscapularls
Acromio-lftoracic artery
Axillary artery
MEDI AS NERVE
Subscapular artery

Teres major

Latissimus dorsi

Long head of triceps
MUSCULO-SPIRAL SERVE



) MUSCULAR BRANCH OF
} MUSCULO-SPIRAL
] SERVE



Inferior prof undo artery

Inner bead of triceps
ULNAR NERVE

Anastomolica magna artery
Internal intermuscular septum



MUSCULAR BRANCHES OF
MEDI AS SERVE

Pronator teres and superficial
flexor muscles, turned back

Anterior ulnar recurrent artery

Deep bead of pronator radii
teres



Posterior ulnar recurrent artery



Superficial flexor muscles,
turned back



Anterior interosseous artery and nerve
Flexor profundus digitorum
ULNAR NERVE

Ulnar artery



Interosseous membrane with cut edge
of pronator quadratus



go SHOULDER AND ARM

Clean and study the formation of the:

BRACHIAL PLEXUS.

Branches of the brachial plexus:
Nerve to rhomboid.
Suprascapular.
Posterior thoracic.
Anterior thoracic.

Wrisberg (n. cutaneus brachii medialis minor}.
Internal cutaneous (n. cutaneus brachii medialis}.
Subscapularis.
Musculo-cutaneus .
Ulnar.
Median.

Circumflex (n. axillaris}.
Musoulo-spiral (radialis} .



FIG. ioo. DIAGRAM OF THE BRACHIAL PLEXUS. (Morris.)
The posterior cord of the plexus is darkly shaded.



FIFTH
CERVICAL



SIXTH
CERVICAL



SEVENTH

CERVICAL
TO SCALENI &
LONG US COL LI
EIGHTH
CERVICAL
POSTERIOR
THORACIC

FIRST
THORACIC
FIRST

INTERCOSTAL
SECOND
THORA CIC
SECOND
INTERCOSTAL

THIRD
THORACIC
THIRD
INTERCOSTAL




FROM FOURTH CERVICAL

RHOMBOID NERVE
TO PHRENIC

NERVE TO SUBCLAVIUS

SUPRASCAPULAR



EXTERNAL ANTERIOR THORACIC



OUTER CORD OF PLEXUS
CIRCUMFLEX
MUSCULO-CUTANEO US



MUSCULO-SPIRA L
INNER CORD OF PLEXUS

LONG
SUBSCAPULAR

MEDIAN



ULNAR
INTERNAL
CUTANEOUS

NERVE OF
WRISBERG



INTERCOSTO-HUMERAL LATERAL CUTANEOUS



Dissect out and study the following:
Muscle :

Deltoid.

Separate the deltoid from its origin and turn it down.
Note the posterior circumflex artery and circumflex
nerve. (Fig. 102.)



SHOULDER AXD ARM



9 1



FIG. 10 1. DISSECTION OF THE LEFT ARM FROM THE FRONT, SHOWING PORTIONS OF THE
ULNAR. MEDIAN, MUSCULO-CUTANEOUS, AND MVSCULO-SPIRAL NERVES. (Morris.)
Also see Fig. in.



Subscapularis



Teres major

Long head of triceps
Latissimus dorsi

MUSCULO-CUTASEOUS SERVE
MEDIAS SERVE




ULSAR SERVE



Internal bead of triceps



Pronator radii teres
Flexor carpi radialis



Pronator radii teres
deep head;



Flexor sublimis digitorum



Deltoid



Coraco-brachialis
Biceps

Pectoralis major



Brachialis anticus



Biceps



MUSCULO-SPIRAL
SERVE



RADIAL NERVE
POSTERIOR ISTER-

OSSEOl'S SERVE
Extensor carpi radialis

longior

ANTERIOR ISTER-
OSSEOUS SERVE



RADIUS



SHOULDER AND ARM



FIG. 102. THE RIGHT POSTERIOR CIRCUMFLEX ARTERY. (Morris.)
(From a dissection by Mr. Homer in the Museum of St. Bartholomew's Hospital.)



Suprascapular artery

SPINE OF SCAPULA



Infra-spinatus, cut
ACROMIAL PROCESS I Tere8 minor

Superior profunda artery

Posterior circumflex artery
Deltoid, reflected




Infra-spinatus, cut

Teres major
Dorsal scapular artery

Branch of dorsal scapular artery

NER VE TO TERES MINOR



MU8CULO-8PIRAL NERVE
Outer head of triceps

^ EXTERNAL CUTANEOUS
fcv BRANCH OF

MUSCULO-
SPIRAL NERVE



Long head of triceps

CUTANEOUS BRANCH OF CIRCUMFLEX NERVE, CUT



Muscles, continued:

Supra-spinatus. (See Fig. 103.)

Teres minor.

Teres major.

Subscapularis. (See Fig. 104.)

Coraco-brachialis .

Biceps (m. biceps brachii}. (See Fig. 105.)

Brachialis anticus (m. brachialis).

Triceps (m. triceps brachii}. (See Fig. 103.)

Latissimus dorsi.

Subanconeus (m. anconceus}.

When the dissection of the shoulder and arm is completed place the parts


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Online LibrarySimon Menno YutzyA manual and atlas of dissection → online text (page 4 of 11)