Anatomy of the Radial Nerve
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Questions and Answers

The radial nerve originates from the _________ cord(s).

  • Posterior cord (correct)
  • Lateral cord
  • Medial cord

    • The ulnar nerve originates from the __________ cord(s)

  • lateral cord
  • medial cord (correct)
  • posterior cord
  • all of the above

    • Which nerve is compressed in Guyon Tunnel/Canal Syndrome?

  • Axillary Nerve
  • Median Nerve
  • Radial Nerve
  • Ulnar Nerve (correct)

    • Which muscle is inserted onto the Palmar Aponeurosis?

    <p>Palmaris Longus</p> Signup and view all the answers

    What is the nerve supply to the Flexor Digitorum Profundus?

    <p>Both Median and Ulnar Nerves</p> Signup and view all the answers

    Where does the extensor carpi radialis longus insert?

    <p>Posterior aspect of the base of metacarpal 2</p> Signup and view all the answers

    What action does the Opponens Pollicis perform?

    <p>Medial rotation of the 1st MC</p> Signup and view all the answers

    Where will a patient point to pain regarding tennis elbow?

    <p>Lateral epicondyle of the humerus</p> Signup and view all the answers

    Which muscle is not part of the rotator cuff?

    <p>Teres major</p> Signup and view all the answers

    What is the most often injured muscle of the rotator cuff?

    <p>A muscle that medially rotates the shoulder</p> Signup and view all the answers

    Which nerve innervates the latissimus dorsi muscle?

    <p>A nerve that originates from the roots of C6, C7, and C8.</p> Signup and view all the answers

    Which artery is a branch of the second part of the axillary artery?

    <p>Lateral thoracic artery</p> Signup and view all the answers

    What is the lateral boundary of the cubital fossa?

    <p>Brachioradialis muscle</p> Signup and view all the answers

    What passes through the quadrangular space?

    <p>Posterior circumflex humeral artery</p> Signup and view all the answers

    Which nerve is affected in 'Winging of the scapula'?

    <p>Long Thoracic Nerve</p> Signup and view all the answers

    Which muscle is not a rotator cuff muscle?

    <p>Teres Major muscle</p> Signup and view all the answers

    What is the most commonly fractured carpal bone?

    <p>Scaphoid bone</p> Signup and view all the answers

    What veins come together to form the axillary vein?

    <p>Basilic Vein and Brachial Vein</p> Signup and view all the answers

    What is the origin of the musculocutaneous nerve?

    <p>Lateral cord</p> Signup and view all the answers

    Which artery is a branch of the second part of the axillary artery?

    <p>Lateral thoracic artery</p> Signup and view all the answers

    What is the continuation of the basilic vein?

    <p>Axillary vein</p> Signup and view all the answers

    Which muscle does not attach to the coracoid process of the scapula?

    <p>Long head of the biceps</p> Signup and view all the answers

    What is the lateral boundary of the cubital fossa?

    <p>Brachioradialis muscle</p> Signup and view all the answers

    What nerve is affected in 'Winging of the scapula'?

    <p>Long Thoracic Nerve</p> Signup and view all the answers

    What is the most commonly fractured carpal bone?

    <p>Scaphoid</p> Signup and view all the answers

    Which veins come together to form the axillary vein?

    <p>Basilic Vein and Brachial Vein</p> Signup and view all the answers

    What nerve is compressed in Pronator Teres Syndrome?

    <p>Median Nerve</p> Signup and view all the answers

    Which muscle is supplied by the radial nerve?

    <p>Brachioradialis</p> Signup and view all the answers

    What is the nerve supply to the Flexor Digitorum Superficialis?

    <p>Median Nerve</p> Signup and view all the answers

    Where does the Extensor Pollicus Longus travel through?

    <p>3rd extensor tunnel</p> Signup and view all the answers

    Which muscle is a medial rotator of the shoulder?

    <p>Teres Major</p> Signup and view all the answers

    What is the most often injured muscle of the rotator cuff?

    <p>Supraspinatus</p> Signup and view all the answers

    What travels through the quadrangular space?

    <p>Axillary Nerve</p> Signup and view all the answers

    Damage to which nerve causes winged scapula?

    <p>Long Thoracic Nerve</p> Signup and view all the answers

    The musculocutaneous nerve is a branch of which cord?

    <p>Lateral cord</p> Signup and view all the answers

    Which vein is a continuation of the basilic vein?

    <p>Axillary vein</p> Signup and view all the answers

    Which muscle has an insertion on the coracoid process of the scapula?

    <p>All of the above</p> Signup and view all the answers

    Which artery divides the quadrangular space from the triangular space?

    <p>Long head of the triceps brachii muscle</p> Signup and view all the answers

    Which nerve innervates the latissimus dorsi muscle?

    <p>Thoracodorsal nerve</p> Signup and view all the answers

    What is the lateral boundary of the cubital fossa?

    <p>Brachioradialis muscle</p> Signup and view all the answers

    Which nerve is affected in 'Winging of the scapula'?

    <p>Long thoracic nerve</p> Signup and view all the answers

    What passes through the quadrangular space?

    <p>Posterior circumflex humeral artery</p> Signup and view all the answers

    Which nerve is medial to the ulnar artery at the wrist?

    <p>Ulnar Nerve</p> Signup and view all the answers

    What is the primary function of the Lumbricals?

    <p>Flexes MP joint, Extends IP joint</p> Signup and view all the answers

    Which muscle is responsible for medial rotation of the 1st metacarpal bone?

    <p>Opponens Pollicis</p> Signup and view all the answers

    What is the name of the tunnel through which the Extensor Pollicus Longus travels?

    <p>3rd extensor tunnel</p> Signup and view all the answers

    Which nerve innervates the Deltoid muscle?

    <p>Axillary Nerve</p> Signup and view all the answers

    Which muscle is a medial rotator of the shoulder joint?

    <p>Teres Major</p> Signup and view all the answers

    What passes under the transverse scapular ligament?

    <p>Suprascapular nerve</p> Signup and view all the answers

    What is the nerve supply to the Brachioradialis muscle?

    <p>Radial Nerve</p> Signup and view all the answers

    Study Notes

    Nerve Origins

    • Radial nerve originates from the posterior cord
    • Ulnar nerve originates from the medial cord
    • Musculocutaneous nerve originates from the lateral cord
    • Median nerve originates from both medial and lateral cords

    Arteries and Veins

    • Lateral thoracic artery is a branch of the second part of the axillary artery
    • Axillary vein is a continuation of the basilic vein
    • Brachial artery is accompanied by the median nerve

    Muscle Innervation

    • Latissimus dorsi muscle is innervated by a nerve that originates from the roots of C6, C7, and C8
    • Long head of the biceps does not attach to the coracoid process of the scapula
    • Musculocutaneous nerve is a terminal branch of the lateral cord

    Arm and Forearm Anatomy

    • Cephalic vein is located laterally and the basilic vein is located medially in the arm
    • Radial nerve travels anterior to the lateral epicondyle of the humerus
    • Brachioradialis muscle is the lateral boundary of the cubital fossa

    Cubital Fossa

    • Ulnar nerve is not a content of the cubital fossa
    • Tendon of Triceps Brachii is not found in the cubital fossa

    Shoulder and Scapula

    • Long Thoracic Nerve is affected in "Winging of the scapula"
    • Teres Major is not a rotator cuff muscle
    • Posterior circumflex humeral artery passes through the quadrangular space
    • Long Head of the Triceps Brachii Muscle divides the quadrangular space from the triangular space

    Forearm and Hand

    • Scaphoid is the most commonly fractured carpal bone
    • Median Nerve is compressed in Pronator Teres Syndrome
    • Palmaris Longus is not present in everyone
    • Ulnar Nerve is affected in Guyon Tunnel/Canal Syndrome
    • Flexor Digitorum Profundus is supplied by both Median and Ulnar Nerves
    • Cutaneous Branches of the Ulnar Nerves do not pass under the flexor retinaculum
    • Extensor retinaculum holds the extensor forearm tendons in place
    • Opponens Pollicis performs medial rotation of 1st MC
    • Lumbricals flex the MP joint and extend the IP joint

    Nerve Origins

    • Radial nerve originates from the posterior cord
    • Ulnar nerve originates from the medial cord
    • Musculocutaneous nerve originates from the lateral cord
    • Median nerve originates from both medial and lateral cords

    Arteries and Veins

    • Lateral thoracic artery is a branch of the second part of the axillary artery
    • Axillary vein is a continuation of the basilic vein
    • Brachial artery is accompanied by the median nerve

    Muscle Innervation

    • Latissimus dorsi muscle is innervated by a nerve that originates from the roots of C6, C7, and C8
    • Long head of the biceps does not attach to the coracoid process of the scapula
    • Musculocutaneous nerve is a terminal branch of the lateral cord

    Arm and Forearm Anatomy

    • Cephalic vein is located laterally and the basilic vein is located medially in the arm
    • Radial nerve travels anterior to the lateral epicondyle of the humerus
    • Brachioradialis muscle is the lateral boundary of the cubital fossa

    Cubital Fossa

    • Ulnar nerve is not a content of the cubital fossa
    • Tendon of Triceps Brachii is not found in the cubital fossa

    Shoulder and Scapula

    • Long Thoracic Nerve is affected in "Winging of the scapula"
    • Teres Major is not a rotator cuff muscle
    • Posterior circumflex humeral artery passes through the quadrangular space
    • Long Head of the Triceps Brachii Muscle divides the quadrangular space from the triangular space

    Forearm and Hand

    • Scaphoid is the most commonly fractured carpal bone
    • Median Nerve is compressed in Pronator Teres Syndrome
    • Palmaris Longus is not present in everyone
    • Ulnar Nerve is affected in Guyon Tunnel/Canal Syndrome
    • Flexor Digitorum Profundus is supplied by both Median and Ulnar Nerves
    • Cutaneous Branches of the Ulnar Nerves do not pass under the flexor retinaculum
    • Extensor retinaculum holds the extensor forearm tendons in place
    • Opponens Pollicis performs medial rotation of 1st MC
    • Lumbricals flex the MP joint and extend the IP joint

    Nerve Origins

    • Radial nerve originates from the posterior cord
    • Ulnar nerve originates from the medial cord
    • Musculocutaneous nerve originates from the lateral cord
    • Median nerve originates from both medial and lateral cords

    Arteries and Veins

    • Lateral thoracic artery is a branch of the second part of the axillary artery
    • Axillary vein is a continuation of the basilic vein
    • Brachial artery is accompanied by the median nerve

    Muscle Innervation

    • Latissimus dorsi muscle is innervated by a nerve that originates from the roots of C6, C7, and C8
    • Long head of the biceps does not attach to the coracoid process of the scapula
    • Musculocutaneous nerve is a terminal branch of the lateral cord

    Arm and Forearm Anatomy

    • Cephalic vein is located laterally and the basilic vein is located medially in the arm
    • Radial nerve travels anterior to the lateral epicondyle of the humerus
    • Brachioradialis muscle is the lateral boundary of the cubital fossa

    Cubital Fossa

    • Ulnar nerve is not a content of the cubital fossa
    • Tendon of Triceps Brachii is not found in the cubital fossa

    Shoulder and Scapula

    • Long Thoracic Nerve is affected in "Winging of the scapula"
    • Teres Major is not a rotator cuff muscle
    • Posterior circumflex humeral artery passes through the quadrangular space
    • Long Head of the Triceps Brachii Muscle divides the quadrangular space from the triangular space

    Forearm and Hand

    • Scaphoid is the most commonly fractured carpal bone
    • Median Nerve is compressed in Pronator Teres Syndrome
    • Palmaris Longus is not present in everyone
    • Ulnar Nerve is affected in Guyon Tunnel/Canal Syndrome
    • Flexor Digitorum Profundus is supplied by both Median and Ulnar Nerves
    • Cutaneous Branches of the Ulnar Nerves do not pass under the flexor retinaculum
    • Extensor retinaculum holds the extensor forearm tendons in place
    • Opponens Pollicis performs medial rotation of 1st MC
    • Lumbricals flex the MP joint and extend the IP joint

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    Description

    This quiz question is about the origin of the radial nerve in the human body. It's a great question for students of anatomy or those interested in learning about the nervous system.

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