PNS final Questions with Answers (100% Correct Answers)
An elbow (cubital) region fracture sustained by an adult is more likely to fracture the olecranon
process and radial head/neck, whereas an elbow region fracture in a child will more likely
involve the condyles. —Answer: True
As described in our monograph this week by Dr. Ferrante about brachial plexopathy, which of
the following is true regarding Parsonage-Turner syndrome? —Answer: A, B and C are correct
he Ulnar nerve is derived from : —Answer: C8-T1 nerve roots
The axillary nerve: —Answer: B and C
The dorsal interosseous muscles are innervated by the ___________nerve and their main action
is ________of the digits. —Answer: deep ulnar, abduction
The median nerve derives the majority of its axons from both the lateral and posterior cords of
the brachial plexus. —Answer: False
The pronator teres is considered the "power pronator" muscle, and the flexor digotorum
profundus is considered the "power flexor" muscle. —Answer: false
The radial nerve is derived from: —Answer: posterior cord of brachial plexus
The lateral forearm is innervated cutaneously by a branch of which nerve? —Answer:
musculocutaneous
the medial antebrachial cutaneous nerve: —Answer: is derived from the medial cord of the
brachial plexus
Which nerve branch (nerve) derived from the brachial plexus listed below is the most likley to
be lesioned in the axilla? —Answer: ulnar
Which nerve innervates pronator teres muscle? —Answer: median
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, Which nerve passes through the quadrangular space? —Answer: axillary
Which nerve pierces the belly of the coracobrachialis muscle and is derived from the lateral cord
of the brachial plexus? —Answer: musculocutaneous
Which nerve(s) listed below is (are) the LEAST frequently injured nerve in humans? —Answer:
musculocutaneous
Which of the following muscles listed below receives dual innervation? —Answer: flexor
digitorum profundus
Which of the following structures does not pass through the carpal tunnel? —Answer: tendon
of flexor carpi radialis
Which nerve is often lesioned or disrupted as a result of inguinal hernia repair? —Answer:
ilioinguinal
The most common mononeuropathy in the lower limb is? —Answer: common fibular at the
fibular neck
Which nerve is often irritated by the psoas muscle and leads to paresthesias/dysthesias on the
proximal middle thigh region? —Answer: genitofemoral
The femoral nerve innervates all of the following muscles EXCEPT? —Answer: gracilis
The inferior gemellus muscle is innervated by which nerve listed below? —Answer: nerve to
quadratus femoris
The long head of the biceps femoris is innervated by the fibular division of the sciatic nerve,
whereas the short head is innervated by the tibial division of the sciatic nerve. —Answer: false
The tensor fascia lata muscle is innervated by the __________nerve and receives most of its
nerve root supply from the ______nerve root level. —Answer: superior gluteal, L5
The femoral triangle: —Answer: A and C are correct
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An elbow (cubital) region fracture sustained by an adult is more likely to fracture the olecranon
process and radial head/neck, whereas an elbow region fracture in a child will more likely
involve the condyles. —Answer: True
As described in our monograph this week by Dr. Ferrante about brachial plexopathy, which of
the following is true regarding Parsonage-Turner syndrome? —Answer: A, B and C are correct
he Ulnar nerve is derived from : —Answer: C8-T1 nerve roots
The axillary nerve: —Answer: B and C
The dorsal interosseous muscles are innervated by the ___________nerve and their main action
is ________of the digits. —Answer: deep ulnar, abduction
The median nerve derives the majority of its axons from both the lateral and posterior cords of
the brachial plexus. —Answer: False
The pronator teres is considered the "power pronator" muscle, and the flexor digotorum
profundus is considered the "power flexor" muscle. —Answer: false
The radial nerve is derived from: —Answer: posterior cord of brachial plexus
The lateral forearm is innervated cutaneously by a branch of which nerve? —Answer:
musculocutaneous
the medial antebrachial cutaneous nerve: —Answer: is derived from the medial cord of the
brachial plexus
Which nerve branch (nerve) derived from the brachial plexus listed below is the most likley to
be lesioned in the axilla? —Answer: ulnar
Which nerve innervates pronator teres muscle? —Answer: median
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, Which nerve passes through the quadrangular space? —Answer: axillary
Which nerve pierces the belly of the coracobrachialis muscle and is derived from the lateral cord
of the brachial plexus? —Answer: musculocutaneous
Which nerve(s) listed below is (are) the LEAST frequently injured nerve in humans? —Answer:
musculocutaneous
Which of the following muscles listed below receives dual innervation? —Answer: flexor
digitorum profundus
Which of the following structures does not pass through the carpal tunnel? —Answer: tendon
of flexor carpi radialis
Which nerve is often lesioned or disrupted as a result of inguinal hernia repair? —Answer:
ilioinguinal
The most common mononeuropathy in the lower limb is? —Answer: common fibular at the
fibular neck
Which nerve is often irritated by the psoas muscle and leads to paresthesias/dysthesias on the
proximal middle thigh region? —Answer: genitofemoral
The femoral nerve innervates all of the following muscles EXCEPT? —Answer: gracilis
The inferior gemellus muscle is innervated by which nerve listed below? —Answer: nerve to
quadratus femoris
The long head of the biceps femoris is innervated by the fibular division of the sciatic nerve,
whereas the short head is innervated by the tibial division of the sciatic nerve. —Answer: false
The tensor fascia lata muscle is innervated by the __________nerve and receives most of its
nerve root supply from the ______nerve root level. —Answer: superior gluteal, L5
The femoral triangle: —Answer: A and C are correct
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