Human Anatomy Vol 1

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termination it bifurcates into the radial and ulnar
arteries.

RodiolAdery
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Radial artery is marked by joining the following points.

. A point in front of the elbow at the level of the neck
of the radius medial to the tendon of the biceps
brachii.
. The second point at the wrist between the anterior
border of the radius laterally and the tendon of the
flexor carpi radialis medially, where the radial pulse
is commonly felt (Fig. 11.3).
Its course is curved with a gentle convexity to the
lateral side.


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Radial artery is marked by joining the following three
points.

. A point at the wrist between the anterior border of
the radius and the tendon of the flexor carpi radialis,
(Fis. 11.3).
o A second point just below the tip of the styloid
process of the radius (Fig. 11.a).
. The third point at the proximal end of the first
irtermetacarpal space.


In this part of its course, the artery runs obliquely
downwards and backwards deep to the tendons of the
abductor pollicis longus, the extensor pollicis brevis,
and superficial to the lateral ligament of the wrist joint.
Thus it passes through the anatomical snuffbox to reach
the proximal end of the first intermetacarpal space.

UInor Artery
Ulnar artery is marked by joining the following three
points.

. A point in front of the elbow at the level of the neck
of the radius medial to the tendon of the biceps
brachii (Fig. 11.3).
o A second point at the junction of the upper one-third
and lower two-thirds of the medial border of the
forearm (lateral to the ulnar nerve).
o The third point lateral to the pisiform bone.
Thus the course of the ulnar artery is oblique in its
upper one-third, and vertical in its lower two-thirds.
The ulnar nerve lies just medial to the ulnar artery in
the lower two-thirds of its course. The ulnar artery
continues in the palm as the superficial palmar arch.


Superficiol Polmor Arch
Superficial palmar arch is formed by the direct
continuation of the ulnar artery, ar.d is marked as a
curved line by joining the following points:

SURFACE MARKING, RADIOLOGICAL ANATOMY AND COMPARISON OF UPPEB AND LOWER LIMBS

Acromion
and clavicle

Axillary nerve

Deltoid tuberosity

Radial nerve

Lateral epicondyle

Posterior
interosseous nerve

Radial artery in
anatomical snuff box
Superficial branch
of radial nerve

Fig. 11.4: Surface projection of axillary, radial, posterior
interosseous nerves and radial artery in anatomical snuff box
(posterior view of left limb)

Tendon of biceps
brachii
Radial nerve

Deep branch

Radial artery

Superficial branch

Tendon of flexor
carpi radialis

Radial artery

Ulnar nerve
behind medial
epicondyle
Brachial artery

Ulnar artery

Ulnar nerve

Median nerve

Pisiform

Flexor retinaculum

Deep palmar arch
with deep branch
of ulnar nerve in
its concavity

Fig.11.3:
arches


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Arteries and nenyes of front of forearm and the palmar
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