Brachial Plexus Quiz

19 Questions | By Eringb | Updated: Jun 25, 2015 | Attempts: 693

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1.

The functions of the nerves from the brachial plexus include:
- A.
  
  Sensory innervation to skin and deep structures
- B.
  
  Motor innervation
- C.
  
  ANS influence
- D.
  
  Sympathetic secretory supply to sweat glands
- E.
  
  All of the above
Correct Answer
E. All of the above
2.

These structures of the brachial plexus are housed in the posterior triangle of the neck:
- A.
  
  Roots & Trunks
- B.
  
  Divisions, Cords, Trunks
- C.
  
  Roots, Trunks, Divisions
- D.
  
  Divisions & Cords
Correct Answer
A. Roots & Trunks
3.

Which roots form the superior/upper trunk of the brachial plexus?
- A.
  
  C7
- B.
  
  C7 & C8
- C.
  
  C5 & C6
- D.
  
  C8 & T1
Correct Answer
C. C5 & C6
4.

How many roots are there in the anterior rami of the brachial plexus?
- A.
  
  6
- B.
  
  7
- C.
  
  4
- D.
  
  5
Correct Answer
D. 5
5.

There is only one root (C7) that forms the inferior/lower trunk of the brachial plexus.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False
6.

The ____ of the brachial plexus further divide into anterior and posterior divisions.

Correct Answer
trunks
7.

The lateral cord is made up of
- A.
  
  Anterior division of superior/upper trunk and anterior division of middle trunk
- B.
  
  Anterior division of the lower/inferior trunk
- C.
  
  Anterior division of the superior/upper trunk and posterior division of middle trunk
- D.
  
  Anterior division of superior/upper trunk and anterior division of the lower/inferior trunk
Correct Answer
A. Anterior division of superior/upper trunk and anterior division of middle trunk
8.

Select the TRUE statement concerning the medial root of the median nerve
- A.
  
  Gives off no branches in axilla
- B.
  
  Interval between axillary artery and vein
- C.
  
  Crosses in front of axillary artery to joint lateral root of the median nerve
- D.
  
  Branches off of posterior cord
Correct Answer
C. Crosses in front of axillary artery to joint lateral root of the median nerve
9.

Branches of the lateral cord include:
- A.
  
  Lateral pectoral nerve
- B.
  
  Medial pectoral nerve
- C.
  
  Musculocutaneous nerve
- D.
  
  Axillary nerve
- E.
  
  Lateral root of the median nerve
Correct Answer(s)
A. Lateral pectoral nerve
C. Musculocutaneous nerve
E. Lateral root of the median nerve
10.

Branches of the medial cord include:
- A.
  
  Lateral pectoral nerve
- B.
  
  Medial pectoral nerve
- C.
  
  Medial cutaneous nerve of arm/forearm
- D.
  
  Radial nerve
- E.
  
  Ulnar nerve
- F.
  
  Medial root of median nerve
Correct Answer(s)
B. Medial pectoral nerve
C. Medial cutaneous nerve of arm/forearm
E. Ulnar nerve
F. Medial root of median nerve
11.

Branches of the posterior cord include:
- A.
  
  Axillar nerve
- B.
  
  Musculocutaneous nerve
- C.
  
  Radial nerve
- D.
  
  Upper/lower subscapular nerves
- E.
  
  Thoracodorsal nerve
Correct Answer(s)
A. Axillar nerve
C. Radial nerve
D. Upper/lower subscapular nerves
E. Thoracodorsal nerve
12.

Which cords make up the median nerve?
- A.
  
  Posterior and medial cords
- B.
  
  Medial and lateral cords
- C.
  
  Lateral and posterior cords
Correct Answer
B. Medial and lateral cords
13.

The lateral root of the median nerve passes downward on the lateral side on the axillary artery and innervates structures of the hand.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
14.

The medial pectoral nerve supplies the
- A.
  
  Pectoralis major
- B.
  
  Pectoralis minor
- C.
  
  Serratus anterior
Correct Answer
A. Pectoralis major
15.

The medial cutaneous nerve of the arm supplies ___ on the medial side of the arm.

Correct Answer
skin
16.

The musculocutaneous nerve innervates
- A.
  
  Brachialis and the biceps brachii
- B.
  
  Coracobrachialis and triceps brachii
- C.
  
  Brachialis and the triceps brachii
- D.
  
  Coracobrachialis and the biceps brachii
Correct Answer
D. Coracobrachialis and the biceps brachii
17.

The lateral pectoral nerve pierces the clavipectoral fascia and innervates the pectoralis major.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
18.

This nerve can be injured in the axilla in cases of pressure or dislocation of the humeral head and is also frequently injured in the spiral groove in humeral fractures. (Also involved in the Saturday night injury)
- A.
  
  Axillary nerve
- B.
  
  Accessory nerve
- C.
  
  Radial nerve
- D.
  
  Ulnar nerve
Correct Answer
C. Radial nerve

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Jun 25, 2015

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Jun 24, 2015

Quiz Created by
Eringb

Brachial Plexus Quiz

The functions of the nerves from the brachial plexus include:

These structures of the brachial plexus are housed in the posterior triangle of the neck:

Which roots form the superior/upper trunk of the brachial plexus?

How many roots are there in the anterior rami of the brachial plexus?

There is only one root (C7) that forms the inferior/lower trunk of the brachial plexus.

The ____ of the brachial plexus further divide into anterior and posterior divisions.

The lateral cord is made up of

Select the TRUE statement concerning the medial root of the median nerve

Branches of the lateral cord include:

Branches of the medial cord include:

Branches of the posterior cord include:

Which cords make up the median nerve?

The lateral root of the median nerve passes downward on the lateral side on the axillary artery and innervates structures of the hand.

The medial pectoral nerve supplies the

The medial cutaneous nerve of the arm supplies ___ on the medial side of the arm.

The musculocutaneous nerve innervates

The lateral pectoral nerve pierces the clavipectoral fascia and innervates the pectoralis major.

This nerve can be injured in the axilla in cases of pressure or dislocation of the humeral head and is also frequently injured in the spiral groove in humeral fractures. (Also involved in the Saturday night injury)