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Test Your Knowledge with the Brachial Plexus Quiz

Think you can ace the brachial plexus labeling quiz? Dive in now!

Editorial: Review CompletedCreated By: Charles SmithUpdated Aug 25, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art anatomical brachial plexus nerves branching into arm on dark blue background

This brachial plexus quiz helps you practice labeling roots, trunks, divisions, cords, and branches with quick fill‑in‑the‑blank items and labeling prompts. Use it to check gaps before an exam. For a warm‑up, try the interactive plexus practice , then start the quiz and see how you do.

Which spinal nerve roots typically form the brachial plexus?
C3 to C7
C4 to C8
C5 to T1
C6 to T2
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The roots of the brachial plexus pass between the anterior and middle scalene muscles.
False
True
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Which structure names the cords of the brachial plexus by their positional relationship?
Pectoralis minor tendon
First rib
Subclavian vein
Second part of the axillary artery
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Which trunk of the brachial plexus gives rise to the suprascapular nerve?
Middle trunk
Lower trunk
Upper trunk
No trunk; it arises directly from roots
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The long thoracic nerve innervates the serratus anterior muscle.
False
True
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Which nerve is most likely injured in a surgical neck fracture of the humerus?
Median nerve
Radial nerve
Ulnar nerve
Axillary nerve
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The medial cord contributes to the formation of the median nerve.
True
False
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Which branch innervates the infraspinatus muscle?
Axillary nerve
Suprascapular nerve
Subscapular nerve
Dorsal scapular nerve
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Damage to the radial nerve in the spiral groove most classically causes wrist drop.
False
True
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Which nerve root fibers dominate elbow flexion via the musculocutaneous nerve?
C5-C6
C7
C8
T1
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Which nerve is responsible for the OK sign pinch (anterior interosseous function)?
Ulnar nerve (deep branch)
Musculocutaneous nerve
Median nerve (anterior interosseous branch)
Radial nerve (posterior interosseous)
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A prefixed brachial plexus commonly includes a contribution from C4 and reduced T1.
False
True
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Which nerve provides cutaneous sensation to the medial arm (proximal, near axilla)?
Intercostobrachial nerve (T2)
Medial brachial cutaneous nerve
Posterior cutaneous nerve of arm (radial)
Lateral brachial cutaneous nerve
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The posterior cord is formed by posterior divisions of all three trunks.
False
True
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Which branch supplies the teres minor muscle?
Upper subscapular nerve
Suprascapular nerve
Axillary nerve
Lower subscapular nerve
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Which nerve is most likely to be compressed in the arcade of Frohse?
Axillary nerve
Ulnar nerve
Posterior interosseous nerve
Anterior interosseous nerve
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In carpal tunnel syndrome, the palmar cutaneous branch of the median nerve is typically spared.
True
False
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Which lesion produces the classic hand of benediction on attempted finger flexion?
Posterior interosseous palsy
Axillary nerve palsy
Low ulnar nerve palsy
High median nerve palsy
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The musculocutaneous nerve typically terminates as the lateral antebrachial cutaneous nerve.
True
False
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Which structure forms the lateral boundary of the quadrangular space?
Surgical neck of humerus
Long head of triceps
Teres major
Teres minor
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Study Outcomes

  1. Identify Brachial Plexus Components -

    Recognize the roots, trunks, divisions, cords, and branches of the brachial plexus to build a solid anatomical framework.

  2. Label Key Structures -

    Accurately pinpoint and name brachial plexus parts on diagrams through our brachial plexus labeling quiz, enhancing spatial understanding.

  3. Trace Nerve Pathways -

    Follow the course of each nerve from spinal segments to peripheral targets, clarifying motor and sensory innervation routes.

  4. Apply Fill-in-the-Blank Practice -

    Engage with brachial plexus fill in the blank challenges to reinforce nerve names and pathway recall in exam-style scenarios.

  5. Differentiate Functional Roles -

    Distinguish between motor and sensory branches of the plexus, understanding how each contributes to muscle control and skin sensation.

  6. Reinforce Clinical Relevance -

    Analyze common injury patterns in a brachial plexus game format, linking anatomical knowledge to real-world clinical cases.

Cheat Sheet

  1. Structural Organization Mnemonic -

    To master the brachial plexus quiz, begin by memorizing the sequence: Roots, Trunks, Divisions, Cords, Branches with the popular mnemonic "Real Therapists Drink Cold Beer." This mental framework streamlines the brachial plexus labeling quiz by giving you a clear path from C5 - T1 roots to the five terminal branches. Consistent review of this hierarchy anchors all subsequent detail in your mind.

  2. Roots and Trunks Mapping -

    Focus on identifying each spinal root (C5 - T1) and how they merge into upper, middle, and lower trunks; anatomical texts like Gray's Anatomy and university e-labs emphasize the scalene gaps as a landmark. When playing the brachial plexus game or doing a fill-in-the-blank drill, visualize or draw the roots passing between the anterior and middle scalene muscles. This spatial awareness reduces confusion when labeling diagrams in the brachial plexus labeling quiz.

  3. Divisions to Cords Transition -

    Each trunk splits into anterior and posterior divisions behind the clavicle; these recombine around the axillary artery to form the lateral, posterior, and medial cords named by relation to that vessel. Reviewing a simple diagram before each brachial plexus quiz reinforces which divisions feed into which cords and speeds up recall. Try tracing the paths on a model or app-based brachial plexus game for active learning.

  4. Terminal Branches and Innervation -

    Learn the five major nerves - musculocutaneous, axillary, radial, median, and ulnar - by associating each with key motor functions and sensory regions (e.g., radial nerve for wrist extension and dorsal hand sensation). A quick trick from medical school: map the "hand's motor-muscle test" for each nerve to clinical signs in the quiz. For sensory pathways, match dermatomal charts (University of Michigan resource) during your brachial plexus labeling quiz to solidify cutaneous innervation knowledge.

  5. Clinical Correlations and Quiz Applications -

    Link theoretical knowledge to conditions like Erb-Duchenne palsy (C5 - C6 injury) and Klumpke palsy (C8 - T1 injury) to answer fill-in-the-blank and scenario-based questions confidently. Practice by sketching lesion sites and predicting motor deficits in a brachial plexus game or quiz to reinforce pathways. Turning clinical cases into quick flashcard Q&A pairs makes your next brachial plexus fill in the blank challenge more approachable and memorable.

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