Anatomy test on the supraclavicular part of brachial plexus.

Evaluate knowledge of the anatomy of the supraclavicular part of the brachial plexus. The test examines the topography, formation of trunks, and areas of innervation.

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1. Which anterior branches of spinal nerves form the brachial plexus?

C1-C4

The brachial plexus is formed by the anterior branches of C5-T1, with occasional contributions from C4 and T2.
Th1-Th12

The brachial plexus is formed by the anterior branches of C5-T1, with occasional contributions from C4 and T2.
C5-T1

The brachial plexus is formed by the anterior branches of C5-T1, with occasional contributions from C4 and T2.
L1-L4

The brachial plexus is formed by the anterior branches of C5-T1, with occasional contributions from C4 and T2.
I find it difficult to answer

The brachial plexus is formed by the anterior branches of C5-T1, with occasional contributions from C4 and T2.

2. In which neck topographic formation are the trunks of the brachial plexus located?

Interscalene space

The trunks of the brachial plexus exit the neck through the interscalene space, between the anterior and middle scalene muscles.
Prescalene space

The trunks of the brachial plexus exit the neck through the interscalene space, between the anterior and middle scalene muscles.
Carotid triangle

The trunks of the brachial plexus exit the neck through the interscalene space, between the anterior and middle scalene muscles.
Submandibular triangle

The trunks of the brachial plexus exit the neck through the interscalene space, between the anterior and middle scalene muscles.
I find it difficult to answer

The trunks of the brachial plexus exit the neck through the interscalene space, between the anterior and middle scalene muscles.

3. Which roots form the superior trunk of the brachial plexus?

Only C7

The superior trunk is formed by the fusion of the anterior branches of the fifth and sixth cervical spinal nerves.
C8 and Th1

The superior trunk is formed by the fusion of the anterior branches of the fifth and sixth cervical spinal nerves.
C4 and C5

The superior trunk is formed by the fusion of the anterior branches of the fifth and sixth cervical spinal nerves.
C5 and C6

The superior trunk is formed by the fusion of the anterior branches of the fifth and sixth cervical spinal nerves.
I find it difficult to answer

The superior trunk is formed by the fusion of the anterior branches of the fifth and sixth cervical spinal nerves.

4. Which spinal nerve continues as the middle trunk of the brachial plexus?

C5

The middle trunk is a direct continuation of the anterior branch of the seventh cervical spinal nerve.
C7

The middle trunk is a direct continuation of the anterior branch of the seventh cervical spinal nerve.
C6

The middle trunk is a direct continuation of the anterior branch of the seventh cervical spinal nerve.
C8

The middle trunk is a direct continuation of the anterior branch of the seventh cervical spinal nerve.
I find it difficult to answer

The middle trunk is a direct continuation of the anterior branch of the seventh cervical spinal nerve.

5. How are the trunks of the supraclavicular part of the brachial plexus positioned in relation to the subclavian artery in the interscalene space?

Below and in front

In the interscalene space, the trunks of the plexus lie behind and above the subclavian artery.
Anteriorly and medially

In the interscalene space, the trunks of the plexus lie behind and above the subclavian artery.
Surrounds the artery on all sides

In the interscalene space, the trunks of the plexus lie behind and above the subclavian artery.
Behind and above

In the interscalene space, the trunks of the plexus lie behind and above the subclavian artery.
I find it difficult to answer

In the interscalene space, the trunks of the plexus lie behind and above the subclavian artery.

6. Which neck muscle defines the anterior boundary of the interscalene space?

M. sternocleidomastoideus

The interscalene space (spatium interscalenum) is anteriorly limited by the anterior scalene muscle.
M. scalenus medius

The interscalene space (spatium interscalenum) is anteriorly limited by the anterior scalene muscle.
M. scalenus anterior

The interscalene space (spatium interscalenum) is anteriorly limited by the anterior scalene muscle.
M. scalenus posterior

The interscalene space (spatium interscalenum) is anteriorly limited by the anterior scalene muscle.
I find it difficult to answer

The interscalene space (spatium interscalenum) is anteriorly limited by the anterior scalene muscle.

7. Which nerve from the supraclavicular part of the plexus pierces the middle scalene muscle?

N. dorsalis scapulae

The dorsal scapular nerve pierces the m. scalenus medius and travels down along the medial edge of the scapula to the rhomboid muscles.
N. thoracicus longus

The dorsal scapular nerve pierces the m. scalenus medius and travels down along the medial edge of the scapula to the rhomboid muscles.
N. suprascapularis

The dorsal scapular nerve pierces the m. scalenus medius and travels down along the medial edge of the scapula to the rhomboid muscles.
N. subclavius

The dorsal scapular nerve pierces the m. scalenus medius and travels down along the medial edge of the scapula to the rhomboid muscles.
I find it difficult to answer

The dorsal scapular nerve pierces the m. scalenus medius and travels down along the medial edge of the scapula to the rhomboid muscles.

8. Which muscles are innervated by the n. dorsalis scapulae?

Supraspinatus and infraspinatus muscles

The dorsal scapular nerve provides motor innervation to the mm. rhomboidei and m. levator scapulae.
Rhomboid muscles and the muscle that lifts the scapula

The dorsal scapular nerve provides motor innervation to the mm. rhomboidei and m. levator scapulae.
The pectoralis major and minor muscles

The dorsal scapular nerve provides motor innervation to the mm. rhomboidei and m. levator scapulae.
The serratus anterior muscle

The dorsal scapular nerve provides motor innervation to the mm. rhomboidei and m. levator scapulae.
I find it difficult to answer

The dorsal scapular nerve provides motor innervation to the mm. rhomboidei and m. levator scapulae.

9. On the outer surface of which muscle does the n. long thoracic?

M. latissimus dorsi

The long thoracic nerve lies on the lateral surface of the serratus anterior muscle, which it innervates.
M. pectoralis minor

The long thoracic nerve lies on the lateral surface of the serratus anterior muscle, which it innervates.
M. subscapularis

The long thoracic nerve lies on the lateral surface of the serratus anterior muscle, which it innervates.
M. serratus anterior

The long thoracic nerve lies on the lateral surface of the serratus anterior muscle, which it innervates.
I find it difficult to answer

The long thoracic nerve lies on the lateral surface of the serratus anterior muscle, which it innervates.

10. From which part of the brachial plexus is the n. suprascapularis?

Lateral cord

The suprascapular nerve (n. suprascapularis) arises from the superior trunk in the supraclavicular part of the plexus.
Medial cord

The suprascapular nerve (n. suprascapularis) arises from the superior trunk in the supraclavicular part of the plexus.
Supraclavicular part

The suprascapular nerve (n. suprascapularis) arises from the superior trunk in the supraclavicular part of the plexus.
Posterior cord

The suprascapular nerve (n. suprascapularis) arises from the superior trunk in the supraclavicular part of the plexus.
I find it difficult to answer

The suprascapular nerve (n. suprascapularis) arises from the superior trunk in the supraclavicular part of the plexus.

11. What is the topographical relationship of the n. suprascapularis to the lig. transversum scapulae superius?

Passes beneath the ligament through the scapular notch

The suprascapular nerve passes into the supraspinous fossa through the incisura scapulae under the superior transverse scapular ligament.
Passes over the ligament

The suprascapular nerve passes into the supraspinous fossa through the incisura scapulae under the superior transverse scapular ligament.
Pierces the ligament

The suprascapular nerve passes into the supraspinous fossa through the incisura scapulae under the superior transverse scapular ligament.
Encompasses the ligament laterally

The suprascapular nerve passes into the supraspinous fossa through the incisura scapulae under the superior transverse scapular ligament.
I find it difficult to answer

The suprascapular nerve passes into the supraspinous fossa through the incisura scapulae under the superior transverse scapular ligament.

12. Which muscles are innervated by the n. suprascapularis?

M. teres major et m. teres minor

The suprascapular nerve innervates the supraspinatus and infraspinatus muscles, as well as the capsule of the shoulder joint.
M. supraspinatus et m. infraspinatus

The suprascapular nerve innervates the supraspinatus and infraspinatus muscles, as well as the capsule of the shoulder joint.
M. subscapularis

The suprascapular nerve innervates the supraspinatus and infraspinatus muscles, as well as the capsule of the shoulder joint.
M. deltoideus

The suprascapular nerve innervates the supraspinatus and infraspinatus muscles, as well as the capsule of the shoulder joint.
I find it difficult to answer

The suprascapular nerve innervates the supraspinatus and infraspinatus muscles, as well as the capsule of the shoulder joint.

13. From which spinal nerves do muscle branches (rr. musculares) to the scalene muscles and long muscles of the neck arise?

C1-C4

The short muscular branches of the brachial plexus (C5-C8) innervate the scalene muscles and long muscles of the neck.
Th1-Th4

The short muscular branches of the brachial plexus (C5-C8) innervate the scalene muscles and long muscles of the neck.
Only C8-T1

The short muscular branches of the brachial plexus (C5-C8) innervate the scalene muscles and long muscles of the neck.
C5-C8

The short muscular branches of the brachial plexus (C5-C8) innervate the scalene muscles and long muscles of the neck.
I find it difficult to answer

The short muscular branches of the brachial plexus (C5-C8) innervate the scalene muscles and long muscles of the neck.

14. In which cervical triangle is the supraclavicular part of the brachial plexus projected?

Omotracheal

The supraclavicular part of the brachial plexus is located in the lateral cervical triangle, predominantly in the omoclavicular triangle (trigonum omoclaviculare).
Submandibular

The supraclavicular part of the brachial plexus is located in the lateral cervical triangle, predominantly in the omoclavicular triangle (trigonum omoclaviculare).
Omoclavicular

The supraclavicular part of the brachial plexus is located in the lateral cervical triangle, predominantly in the omoclavicular triangle (trigonum omoclaviculare).
Carotid

The supraclavicular part of the brachial plexus is located in the lateral cervical triangle, predominantly in the omoclavicular triangle (trigonum omoclaviculare).
I find it difficult to answer

The supraclavicular part of the brachial plexus is located in the lateral cervical triangle, predominantly in the omoclavicular triangle (trigonum omoclaviculare).

15. Which neck fascia forms the sheath surrounding the trunks of the brachial plexus in the interscalene space?

Prevertebral fascia (5th)

The trunks of the brachial plexus and the subclavian artery are covered by the prevertebral layer of cervical fascia.
Superficial fascia (1st)

The trunks of the brachial plexus and the subclavian artery are covered by the prevertebral layer of cervical fascia.
Superficial layer of the deep cervical fascia (2nd)

The trunks of the brachial plexus and the subclavian artery are covered by the prevertebral layer of cervical fascia.
Endocervical fascia (4th)

The trunks of the brachial plexus and the subclavian artery are covered by the prevertebral layer of cervical fascia.
I find it difficult to answer

The trunks of the brachial plexus and the subclavian artery are covered by the prevertebral layer of cervical fascia.

16. Which artery accompanies the n. dorsalis scapulae on the medial edge of the scapula?

A. suprascapularis

The dorsal scapular nerve is accompanied by the deep branch of the transverse cervical artery (or dorsal scapular artery).
Ramus profundus a. transversae cervicis

The dorsal scapular nerve is accompanied by the deep branch of the transverse cervical artery (or dorsal scapular artery).
A. circumflexa scapulae

The dorsal scapular nerve is accompanied by the deep branch of the transverse cervical artery (or dorsal scapular artery).
A. thoracica lateralis

The dorsal scapular nerve is accompanied by the deep branch of the transverse cervical artery (or dorsal scapular artery).
I find it difficult to answer

The dorsal scapular nerve is accompanied by the deep branch of the transverse cervical artery (or dorsal scapular artery).

17. Branches of the supraclavicular part of the brachial plexus provide innervation:

Muscles of the free upper limb

Short branches of the supraclavicular part innervate the muscles of the shoulder girdle and the derivatives of ventral musculature in the trunk.
Skin of the posterior surface of the arm

Short branches of the supraclavicular part innervate the muscles of the shoulder girdle and the derivatives of ventral musculature in the trunk.
Muscles of the anterior group of the forearm

Short branches of the supraclavicular part innervate the muscles of the shoulder girdle and the derivatives of ventral musculature in the trunk.
Primarily muscles of the shoulder girdle, as well as certain muscles of the back and chest

Short branches of the supraclavicular part innervate the muscles of the shoulder girdle and the derivatives of ventral musculature in the trunk.
I find it difficult to answer

Short branches of the supraclavicular part innervate the muscles of the shoulder girdle and the derivatives of ventral musculature in the trunk.

18. Which muscle limits the interscalene space posteriorly?

M. scalenus anterior

The posterior boundary of the spatium interscalenum is the middle scalene muscle.
M. levator scapulae

The posterior boundary of the spatium interscalenum is the middle scalene muscle.
M. scalenus medius

The posterior boundary of the spatium interscalenum is the middle scalene muscle.
M. omohyoideus

The posterior boundary of the spatium interscalenum is the middle scalene muscle.
I find it difficult to answer

The posterior boundary of the spatium interscalenum is the middle scalene muscle.

19. Of the anterior branches of which spinal nerves is n. long thoracic?

C5, C6, C7

The long thoracic nerve is formed directly from the anterior branches of the fifth, sixth, and seventh cervical nerves.
C8, Th1

The long thoracic nerve is formed directly from the anterior branches of the fifth, sixth, and seventh cervical nerves.
C3, C4

The long thoracic nerve is formed directly from the anterior branches of the fifth, sixth, and seventh cervical nerves.
C7, C8

The long thoracic nerve is formed directly from the anterior branches of the fifth, sixth, and seventh cervical nerves.
I find it difficult to answer

The long thoracic nerve is formed directly from the anterior branches of the fifth, sixth, and seventh cervical nerves.

20. Which spinal nerves form the inferior trunk of the brachial plexus?

C5 and C6

The inferior trunk is formed by the anterior branches of the eighth cervical and first thoracic spinal nerves.
C8 and Th1

The inferior trunk is formed by the anterior branches of the eighth cervical and first thoracic spinal nerves.
C7

The inferior trunk is formed by the anterior branches of the eighth cervical and first thoracic spinal nerves.
Th1 and Th2

The inferior trunk is formed by the anterior branches of the eighth cervical and first thoracic spinal nerves.
I find it difficult to answer

The inferior trunk is formed by the anterior branches of the eighth cervical and first thoracic spinal nerves.