MSK6: Shoulder Girdle and Upper Limb Anatomy Quiz

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Which nerve supplies the trapezius muscle?

spinal accessory nerve (correct)

Suprascapular nerve

Axillary nerve

Musculocutaneous nerve

Which muscle is responsible for protraction (ABD) of the scapula away from the spine?

Latissimus dorsi

Serratus anterior (correct)

Subclavius

Pectoralis major

Which muscle is responsible for extension of the arm?

Subclavius

Serratus anterior

Latissimus dorsi (correct)

Pectoralis major

Which muscle is responsible for medial rotation of the arm?

Pectoralis major Signup and view all the answers

Which muscle is responsible for depression of the clavicle at the sternoclavicular and acromioclavicular joints?

Subclavius Signup and view all the answers

The brachial plexus is a major nerve network that supplies the upper limb, formed by the union of:

anterior rami of C5-T1 Signup and view all the answers

Arterial supply of the upper limb is:

axillary artery Signup and view all the answers

The peripheral nerves of the brachial plexus are divided into __ and parts

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The dorsal scapular nerve is a branch in the supraclavicular part of the brachial plexus and it arises from:

root of C5 Signup and view all the answers

The long thoracic nerve is a branch in the supraclavicular part of the brachial plexus and it arises from:

root C5-C7 Signup and view all the answers

The the nerve to subclavius and suprascapular nerve are branches in the supraclavicular part of the brachial plexus and they arise from:

superior trunk Signup and view all the answers

There are how many roots?

5 Signup and view all the answers

There are how many trunks?

3 Signup and view all the answers

There are how many divisions?

6 Signup and view all the answers

There are how many cords?

3 Signup and view all the answers

There are how many terminal branches?

5 Signup and view all the answers

____________ are anterior branches of fully formed spinal nerves that have exited the intervertebral foramen and head laterally/inferiorly away from the midline

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Roots pass through the gap between _______________ muscles – lateral to cervical spine

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Roots pass through scalene muscles on lateral aspect of neck to form three ________

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The superior trunk is the ___________

union of C5 and C6 roots Signup and view all the answers

The middle trunk is a:

continuation of C7 root Signup and view all the answers

The inferior trunk is formed by:

union of C8 and T1 roots Signup and view all the answers

Each trunk gives off two branches; splitting into _ and _ divisions as plexus passes posterior to the clavicle

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The superior, middle and inferior trunks all have anterior and posterior divisions

True Signup and view all the answers

Once anterior and posterior divisions have entered axilla, they combine to form three cords, named by their position relative to the _____________

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The ___________ is formed by the anterior divisions of the superior and middle trunks (lateral to artery)

lateral cord Signup and view all the answers

The _________ is formed by the anterior division of inferior trunk

medial Signup and view all the answers

The ________ is formed by the posterior division of all three trunks

posterior cord Signup and view all the answers

Once in the axilla and proximal aspect of upper limb; three cords give rise to _______ major branches which continue into upper limb

5 Signup and view all the answers

The trapezius is innervated by the:

spinal accessory nerve (CN XI) Signup and view all the answers

MSK6: Shoulder Girdle and Upper Limb Anatomy Quiz

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Questions and Answers

Which nerve supplies the trapezius muscle?

Which muscle is responsible for protraction (ABD) of the scapula away from the spine?

Which muscle is responsible for extension of the arm?

Which muscle is responsible for medial rotation of the arm?

Which muscle is responsible for depression of the clavicle at the sternoclavicular and acromioclavicular joints?

The brachial plexus is a major nerve network that supplies the upper limb, formed by the union of:

Arterial supply of the upper limb is:

The peripheral nerves of the brachial plexus are divided into ____________ and __________ parts

The dorsal scapular nerve is a branch in the supraclavicular part of the brachial plexus and it arises from:

The long thoracic nerve is a branch in the supraclavicular part of the brachial plexus and it arises from:

The the nerve to subclavius and suprascapular nerve are branches in the supraclavicular part of the brachial plexus and they arise from:

There are how many roots?

There are how many trunks?

There are how many divisions?

There are how many cords?

There are how many terminal branches?

____________ are anterior branches of fully formed spinal nerves that have exited the intervertebral foramen and head laterally/inferiorly away from the midline

Roots pass through the gap between _______________ muscles – lateral to cervical spine

Roots pass through scalene muscles on lateral aspect of neck to form three ________

The superior trunk is the ___________

The middle trunk is a:

The inferior trunk is formed by:

Each trunk gives off two branches; splitting into _____________ and _____________ divisions as plexus passes posterior to the clavicle

The superior, middle and inferior trunks all have anterior and posterior divisions

Once anterior and posterior divisions have entered axilla, they combine to form three cords, named by their position relative to the _____________

The ___________ is formed by the anterior divisions of the superior and middle trunks (lateral to artery)

The _________ is formed by the anterior division of inferior trunk

The ________ is formed by the posterior division of all three trunks

Once in the axilla and proximal aspect of upper limb; three cords give rise to _______ major branches which continue into upper limb

The trapezius is innervated by the:

The origin of the _____________ is the external occipital protuberance, medial superior nuchal line of the occipital bone, ligamentum nuchae, SP of C7

The middle trapezius originates on the:

The upper fibers of the trapezius muscle functions to:

The middle fibers of the trapezius function in:

The lower fibers of the trapezius muscle functions to:

The dorsal scapular nerve innervates the:

__________ originates on SPs of C7 and T1

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