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WorksheetsBrachial Plexus Quiz
Total questions: 20
Worksheet time: 10mins
Brachial plexus is formed by the ventral rami of spinal nerves:
C4–T1
C5–T1
C5–T2
C6–T1
Roots of brachial plexus lie in which space of the neck?
Posterior triangle
Anterior triangle
Submandibular triangle
Digastric triangle
Upper trunk of brachial plexus is formed by:
C5 only
C6 only
C5 and C6
C7
Divisions of brachial plexus are formed behind:
Pectoralis major
Clavicle
First rib
Axillary artery
Posterior cord is formed by:
Posterior divisions of all three trunks
Anterior divisions of all trunks
Posterior divisions of upper and middle trunks only
Anterior and posterior division of lower trunk
Cords of brachial plexus are named according to their relation to:
Axillary vein
Axillary artery
Pectoralis minor
Coracoid process
Lateral cord gives rise to all EXCEPT:
Musculocutaneous nerve
Lateral root of median nerve
Medial pectoral nerve
Lateral pectoral nerve
Medial cord is continuation of:
Anterior division of upper trunk
Posterior division of lower trunk
Anterior division of lower trunk
Posterior division of middle trunk
Which nerve is a terminal branch of posterior cord?
Median nerve
Ulnar nerve
Axillary nerve
Musculocutaneous nerve
Injury to upper trunk of brachial plexus results in:
Claw hand
Wrist drop
Waiter’s tip deformity
Ape hand
Erb’s palsy is caused due to injury to:
Lower trunk (C8–T1)
Upper trunk (C5–C6)
Middle trunk (C7)
Posterior cord
Characteristic deformity seen in Erb’s palsy is due to paralysis of:
Intrinsic hand muscles
Wrist extensors
Shoulder abductors and lateral rotators
Forearm flexors
Klumpke’s palsy involves damage to:
Upper trunk
Middle trunk
Lower trunk
Lateral cord
Deformity seen in Klumpke’s palsy is:
Waiter’s tip
Wrist drop
Claw hand
Ape hand
Horner’s syndrome may be associated with Klumpke’s palsy due to injury of:
Phrenic nerve
Sympathetic fibers from T1
Vagus nerve
Spinal accessory nerve
Pectoralis major is supplied by:
Medial pectoral nerve only
Lateral pectoral nerve only
Both medial and lateral pectoral nerves
Intercostal nerves
Nerve supply of pectoralis minor is:
Lateral pectoral nerve
Medial pectoral nerve
Intercostal nerves
Thoracodorsal nerve
Primary action of pectoralis major is:
Abduction of arm
Lateral rotation of arm
Adduction and medial rotation of arm
Extension of forearm
Pectoralis minor inserts into:
Greater tubercle of humerus
Lesser tubercle of humerus
Coracoid process of scapula
Acromion
Blood supply of pectoralis major is mainly from:
Lateral thoracic artery
Thoracoacromial artery
Subscapular artery
Circumflex humeral artery
