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MSK Anatomy Exam Questions with 100% Correct Answers

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MSK Anatomy Exam Questions with 100% Correct Answers What mechanism causes a Pott's fracture? - Answer-forceful eversion of foot What are the three components of a Pott's fracture? - Answer-medial malleolus avulsion, talus dislocates, fibula fractures What primary curvatures of the spin...

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  • December 29, 2024
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  • 2024/2025
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MSK Anatomy Exam Questions
with 100% Correct Answers
What mechanism causes a Pott's fracture? - Answer-forceful eversion of foot

What are the three components of a Pott's fracture? - Answer-medial malleolus
avulsion, talus dislocates, fibula fractures

What primary curvatures of the spine occur before birth? - Answer-thoracic and sacral

What are secondary curvatures of the spine that occur after birth? - Answer-cervical and
lumbar

What are the three columns of the erector spinae muscles? - Answer-Iliocostalis mm
(lateral)
Longissimus mm (intermediate)
Spinalis mm (medial)

What innervates the erector spinae muscles? - Answer-dorsal rami of spinal nerves

What is the function of the erector spinae muscles? - Answer-Chief extensors of
vertebral column (and head)

Which erector spinae attachments are more stable? - Answer-origins

Which erector spinae attachments are more moveable? - Answer-insertions

What is the common attachment point for iliocostalis and spinalis muscles? - Answer-
erector spinae aponeurosis

What are the iliocostalis muscles? - Answer-lumborum, thoracis, cervicis

What spinal nerves are involved in the lumbosacral plexus? - Answer-L1-L3 & superior
part of L4 ventral rami

What nerve provides motor innervation to the anterior compartment of the thigh? -
Answer-femoral nerve

,What nerve provides motor innervation to the medial compartment of the thigh? -
Answer-obturator nerve

What muscles have motor innervation from iliohypogastric and ilioinguinal nerves? -
Answer-internal oblique & transversus abdominal muscles

What provides motor innervation to the lateral compartment of the leg? - Answer-
superficial fibular nerve

What provides motor innervation to the anterior leg compartment? - Answer-deep fibular
nerve

What nerve provides motor innervation to the superficial & deep leg muscles? - Answer-
tibial nerve

Which suboccipital muscles contribute to the suboccipital triangle? - Answer-Rectus
capitis posterior major
Obliquus capitis superior
Obliquus capitis inferior

What are the contents of the suboccipital triangle? - Answer-vertebral a and suboccipital
n (C1 Dorsal Ramus)

Which forearm flexor muscles are innervated by the ulnar nerve, rather than the median
nerve? - Answer-flexor carpi ulnaris, FDP (medial bellies)

What muscles are innervated by the radial nerve? - Answer-triceps brachii, supinator,
extensors of forearm, brachioradialis

What muscles are innervated by the musculocutaneous nerve? - Answer-
coracobrachialis, brachialis, biceps brachii

What brachial plexus injury causes "wrist drop" in which the patient is unable to extend
their wrist? - Answer-posterior cord injury

Which brachial plexus injury results in Erb's palsy in which the patient's arm is held in
internal rotation aka "waiter's tip" position? - Answer-superior trunk injury

Which muscles are affected by a superior trunk brachial plexus injury? - Answer-teres
minor, deltoid, infraspinatus, supraspinatus

What is the action of deltoid and supraspinatus muscles? - Answer-abduction of arm

What is the action of teres minor and infraspinatus muscles? - Answer-external rotation
of arm

, What terminal branches are affected by a superior trunk injury? - Answer-axillary and
suprascapular nerves (& maybe upper/lower subscapular nerves?)

What kind of brachial plexus injury causes Klumpke's paralysis? - Answer-inferior trunk
injury

What terminal branch is affected by an inferior trunk brachial plexus injury? - Answer-
ulnar nerve

What muscles will be weakened due to an inferior trunk brachial plexus injury? -
Answer-flexor carpi ulnaris, FDP, hypothenar muscles

What muscles are affected by a posterior cord injury? - Answer-extensors of forearm

What vessels are found within the cubital fossa? - Answer-brachial, radial and ulnar
arteries

What are found just above the cubital fossa? - Answer-superficial veins

What muscle tendon is found in the cubital fossa? - Answer-biceps brachii tendon

What nerve is found in the cubital fossa? - Answer-median nerve

What is the deep fascia of retinaculum strengthened by? - Answer-transverse fibers of
collagen

What innervates the supinator muscle? - Answer-radial nerve

What muscles supinate the elbow? - Answer-biceps brachii, supinator

What innervates biceps brachii? - Answer-musculocutaneous nerve

What innervates the brachioradialis muscle? - Answer-radial nerve

What innervates the brachialis muscle? - Answer-musculocutaneous nerve

What muscles flex the elbow? - Answer-biceps brachii, brachialis, brachioradialis

What muscle extends the forearm? - Answer-triceps brachii

What innervates triceps brachii? - Answer-radial nerve

What muscles are involved in finger flexion? - Answer-FDS, FDP, flexor pollicis longus,
lumbricals

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