Download ANATOMY UPPER ARM

ANATOMY UPPER ARM
SENSORY N. SUPPLY
Supraclavicular n.(C3,4);to the
skin over the point of the
shoulder to the half way
down the deltoid m.
Upper lat.cut.n.of the
arm(C5,6); abranch of
axillary n.to the skin over
half of the deltoid.
Lower lat.cut.n.of the
arm(C5,6); lateral surface of
the arm below the deltoid.
Medial cut.n. of the arm
(T1,intercostobrachial n.T2);
medial side of the arm.
Post.cut.n.of the arm(C6);
branch of radial n. back of
the arm
Superficial veins
Lie in the super facial fascia.
 Cephalic v.;ascend on the
lat.side of biceps m.on
reaching the infraclavicular
fosse, pierces the
clavipectoral fascia to drain
in to the axillary vein.
 Basilic v.;ascend on the med.
Side of biceps m. half way up
the arm it pierces the deep
fascia and at the lower
border of teres major m.
joins the venae comoitantes
of the brachial artery to form
the axillary vein.
Superficial veins
The median cubital
vein (or median
basilic vein)
a superficial vein of
the upper limb.
It connects the basilic
and cephalic vein
and is often
used for venipuncture
(taking blood). It lies
in the cubital fossa
superficial to the
bicipital aponeurosis
Superficial lymphatic's
Those from lat.side of the arm follow the
cephalic vein to infraclavicular groups of
nodes.
Those from from medial side follow the
basilic vein to the lateral group of
axillary nodes
THE DEEP LYMPH VESSELS :
drain the ms& deep structures of the arm in
to lateral group of axillary nodes
FASCIAL
COMPARTMENTS
OF THE ARM
The upper arm is
enclosed in a sheat
of deep fascia.
two fascial septa
one on the medial
&one on the lateral
side,extend from the
sheah &are attached
to the medial
&lateral
supracondylar ridges
of the humerus.
so the arm is divided
in to
anterior&posterior
fascial
compartments.
The medial
septum is
pierced by the
ulnar n.&ulnar
collateral a.
The lateral
septum septum
is piereced by
the radial
n.&profunda
brachie
a.(anterior
descending
branch
ANTERIOR
COMPARTMENT.
CONTENT
M.
Biceps brachii.
Coracobrachialis
Brachialis.
A.
Brachial a.
N.
Musculocutaneo
us n.
STRUCTURES PASSING THROUGH THE
COMPARTMENT;
Median&ulnar ns.Basilic v.The radial n.is present
in the lower part of the compartment.
Biceps
brachii

Origin;
Long head;supraglenoid tubercle
of the scapula.
short head; tip of the coracoid
process of the scapula
Insertion;
Post. part of the tuberosity of the
radius&by aponeurotic band
called the bicipital aponeurosis
in to the deep fascia of the
medial aspect of the forearm.
 N.Supply
Musculocutaneous
 Action
Strong supinater of the forearm.
Powerful flexor of the elbow joint.
Weak flexor of the shoulder joint

Origin;
Tip of the coracoid process.
 Insertion;
middle of the medial side of the
humersl shaft.
 N.supply;
musculocutaneous.
 Action;
flexor of the arm.
Weak adductor.

CORACOBRA
CHIALIS
Origin;
from the lower half of the
humerus.
 Insertion;
Anterior surface of the coronoid
process of the ulna.
 N.supply;
Musculocutaneous &small part
radial n.
 Action;
Strong flexor of the elbow joint.

Brachialis
Brachial artery
Begin in the lower
border of the
teres major as a
continuation of
the axillary a.
it terminate
opposite the neck
of the radius by
dividing into
radial &ulnar a.
RELATIONS;
ANT.;it overlapped from lat.side
bycoracobrachialis&biceps
ms.
 Upper part; medial cut.n.of
forearm lies infront.
 Middle part; crosses by the
median n.
 Lower part; bicepital
aponeurosis cross it.
POST.the A.lies on
triceps,coracobrachialis
insertion&brachialis m. ulnar
n. above.
MED;
 Upper part; ulnar n&basilic v.
 Lower part; median n.
LAT;
Above: median n.
corahobrachialis,biceps ms.
Lowe : tendon of biceps.
BRANCHES OF BRACHIAL ARTERY
1-Muscular branches to the ant.compartment of
the arm.
2-The nuterient a.to the humerus.
3-Profunda a. arise near the begining of the
brachial a.&follow the radial n.
4-Superior ulnar collateral a.arise near the
middle of the upper arm and follow the ulnar
n.
5-Inferior ulnar collateral (supratrochlear) a.
arise near the terminal of a.&take part in the
anastomosis around the elbow joint.
6-Terminal ulnar&radial arteries.
AXILLARY VEIN
Lie on the medial side of the artery. formed
from the venae comitantes to the brachial
a. strongly reinforced above by the basilic
vein.