Science & STEM

Muscles of the Arm Quiz: Identify and Label Each Muscle

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This quiz helps you label and locate the muscles of the arm fast. Build recall on biceps, triceps, and forearm groups with clear images and instant results. For more focused practice, try the forearm muscles quiz, review the upper arm anatomy quiz, or challenge yourself to identify the highlighted muscle.

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1Which muscle lies on the anterior aspect of the upper arm and has two heads originating from the scapula?
2Which deep muscle of the upper arm lies directly beneath the biceps brachii and is the primary flexor of the elbow?
3Which muscle originates from the lateral supracondylar ridge of the humerus and is most active during rapid elbow flexion?
4Which muscle is the main extensor of the elbow and has three distinct heads?
5Which small triangular muscle assists the triceps in extending the elbow and stabilizes the elbow joint?
6Which muscle originates from the coracoid process of the scapula and flexes the arm at the shoulder joint?
7Which head of the biceps brachii originates from the coracoid process of the scapula?
8Which muscle flexes and supinates the forearm, often forming a prominent bulge when the elbow is flexed?
9Which head of the triceps brachii originates from the infraglenoid tubercle of the scapula?
10Which nerve innervates the coracobrachialis muscle?
11What is the insertion point of the brachialis muscle?
12The radial nerve travels in which groove on the humerus?
13Which branch of the brachial artery supplies the posterior compartment of the arm?
14The bicipital aponeurosis protects underlying structures at the elbow; which structures are most directly shielded by it?
15After innervating the biceps brachii and brachialis, the musculocutaneous nerve continues as which sensory nerve?
16Which muscle is NOT innervated by the musculocutaneous nerve?
17After a midshaft fracture of the humerus, a lesion in the spiral groove typically spares which muscle due to its nerve branch arising proximal to the injury?
18Injury to the profunda brachii artery would most directly compromise blood flow to which compartment of the arm?
19The bicipital aponeurosis fans out medially to blend with which fascia at the elbow?
20The profunda brachii artery branches off from which major vessel?
21Which structure forms the roof of the cubital fossa?
22The lateral intermuscular septum serves as an origin for which head of the triceps brachii?
23Entrapment of the musculocutaneous nerve within the coracobrachialis leads to sensory loss in which region?
24Which muscle's long head tendon lies within the intertubercular (bicipital) groove of the humerus?
25After an injury to the radial nerve within the spiral groove, which head of the triceps brachii continues to fun<wbr>ction due to its innervation branch arising before the lesion?
Learning Goals

Study Outcomes

  1. Identify Major Arm Muscles -

    Pinpoint and label key muscles such as the biceps brachii, triceps brachii, and brachialis on an arm diagram.

  2. Differentiate Forearm Muscle Groups -

    Distinguish between the flexor and extensor muscle groups of the forearm and place them correctly in your labels.

  3. Apply Anatomical Terms in Labeling -

    Use precise anatomical terminology for muscle origins, insertions, and actions to enhance the accuracy of your arm muscle labeling.

  4. Recall Functions of Arm and Forearm Muscles -

    Memorize and state the primary actions of each muscle, including flexion, extension, pronation, and supination.

  5. Analyze Muscle Coordination in Arm Movements -

    Understand how different arm and forearm muscles work together during common movements like lifting, pushing, and pulling.

  6. Evaluate Your Labeling Accuracy -

    Test your knowledge with the muscles of the arm quiz to receive immediate feedback and a score that highlights your mastery and areas for improvement.

Study Guide

Cheat Sheet

  1. Mastering the Biceps Brachii -

    The biceps brachii has two heads (long and short) that originate on the scapula and insert on the radial tuberosity, making it the primary elbow flexor. Remember "SLiDER" (Short head - Coracoid, Long head - Supraglenoid) to ace your muscles of the arm labeling. Its role in supination is tested often in any muscles of the arm quiz, so visualize the twisting motion of the forearm.

  2. Understanding the Triceps Brachii -

    The triceps brachii extends the elbow and consists of long, lateral, and medial heads that converge on the olecranon process. A simple mnemonic "3 Heads => 1 Tee" helps you recall the three origins and single insertion point. In arm muscle labeling drills, look for the posterior compartment bulk and olecranon landmarks.

  3. Spotlighting Brachialis and Brachioradialis -

    The brachialis lies deep to the biceps and is a pure flexor of the elbow, while the brachioradialis spans from the lateral supracondylar ridge to the styloid process of the radius. Use "Beer Raising" to remember brachioradialis action when lifting a glass - perfect for forearm muscles quiz practice. Labeling these correctly is key to distinguishing deep versus superficial flexors.

  4. Deep Flexors & Pronators of the Forearm -

    In the anterior compartment, muscles like pronator teres, flexor carpi radialis, and palmaris longus work in concert for wrist flexion and pronation. The phrase "Pass, Fail, Pass" (Palmaris, Flexor carpi radialis, Pronator teres) helps when tackling arm muscle labeling tasks. These deep flexors often appear in forearm muscles quiz questions on tendinous arches.

  5. Key Extensors in the Posterior Compartment -

    Extensor carpi radialis longus/brevis, extensor digitorum, and extensor carpi ulnaris share the common extensor tendon at the lateral epicondyle. Recall "Lynx, Dogs, Unfortunately" (Longus, Digitorum, Ulnaris) to streamline your muscles of the arm quiz answers. Spotting the muscle bellies along the dorsal forearm is crucial for accurate arm labeling.

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Michael HodgeEdTech Product Lead & Assessment Design SpecialistQuiz Maker
Updated Feb 19, 2026