Human Anatomy Vol 1

UPPER LIMB

Stemoaponeurotic part of pectoralis major twist

around the upper fibres of same musde. Latissimus

dorsi twists around the teres major. Thus the smooth

anterior and posterior walls of the axilla are formed.

Infraclavicular part of brachial plexus lies in the

axilla

Apex of the axilla is known as cervico-axillary

canal and gives passage to axillary vessels and

lower part of brachial plexus.

Axillary sheath is derived from prevertebral fascia,

r \A/hat is the point called?

. \A/hat nerves are affected?

Six nerves are olved:

i. Ventral ramus of cervical five segment of

spinal cord

cord

iii. Suprascapular nerve from upper tr

iv. Nen e to subclavius {rom per trunk

vi. Posterior division of upper tr k

biceps brachii, supinator, so the arm cannot be

A patient came with inability to: (i) abduct right

shoulder, (ii) flex elbow joint and (iii) supinate the

foreatm

r What is the site of injury of the nerves?

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\A/hich of the following is not a branch of posterior

cord of brachial plexus?

a. Upper subscapular b. Lower subscapular

c. Suprascapular d. Axillary

Porter's tip or policeman's tip deformity occurs due

to:

a. Klumpke's paralysis

b. Paralysis of median nerve

c. Paralysis of radial nerve

d. Erb's paralysis

Which is not a branch of lateral cord of brachial

plexus

a. Musculocutaneous

b. Lateral root of median

c. Medial root of median

d. Lateral pectoral

Erb's paralysis causes weakness of all muscles

except:

a. Supraspinatus b. Deltoid

c. Biceps brachii d. Triceps brachii

Posterior wall of axilla is formed by all except one

muscle:

a. Teres major b. Teres minor

c. Latissimus dorsi d. Subscapularis

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