Ch 11 Flashcards by Keenan Parker

Q

Elbow Joint Components

A

Trochlea articulates with trochlear notch of ulna

capitulum articulates with the head of the radius

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Q

Elbow Joint type

A

Uniaxial Hinge

Flexion and Extension

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Q

Radioulnar Joint

A

Prox-

Dist-

opposite convex-concave for supination

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Q

Carrying angle

A

5-10 in males

10-15 in females

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Q

Medial Colateral Ligament Structure

A

Triangular

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Q

Medial Colateral Ligament Attachments

A

Medial epicondyle humerus to ulna

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Q

Lateral colateral ligament structure

A

triangular

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Q

Lateral colateral ligament attach.

A

later epicondyle humerus to ulna

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Q

Annular ligament structure

A

encompass and support head of radius against the ulna

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Q

Brachialis prox. attach.

A

Mid humerus

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Q

Brachialis Dist. attach.

A

Ulna

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Q

Brachialis actions

A

Elbow flexion (pronate curl)

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Q

Brachialis Nerve

A

Musculocutaneous nerve

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Q

Biceps Brachii prox. attach.

A

Long head: Supraglenoid tubercle (scapula)

Short head: Coracoid process (scapula)

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Q

Biceps brachii dist. attach.

A

Radial tuberosity

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Q

Biceps Brachii actions

A

Flexion

Supination (lateral rotation)

Shoulder flexion (shoulder joint)

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Q

Biceps Brachii Nerve

A

Musculocutaneous

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Q

Brachioradialis prox. attach.

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A

Lateral Ridge of Humerus

Q

Brachioradialis Dist. attach.

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A

Styloid process of radius

Q

Brachioradialis Action

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A

Elbow flexion (hammer curl)

Q

Brachioradialis Nerve

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A

Radial Nerve

Q

Triceps Prox. attach.

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A

Long head: infraglenoid tubercle (scapula)

Lateral head: greater tubercle

Medial head: posterior humerus

Q

Triceps Dist. attach.

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A

Olecrannon process Ulna

Q

Triceps action

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A

Elbow extension

Shoulder extension (shoulder joint)

Triceps Nerve

Radial Nerve

Anconeus Prox. Attach.

Lateral epicondyle Humerus

Anconeus Dist. Attach.

Olecrannon process Ulna

Anconeus Actions

Stabilize elbow joint Assists in extension

Anconeus Nerve

Radial Nerve

Pronator Teres prox. attach.

Medial Epicondyle humerus

Pronator Teres dist. attach.

Lateral Radius

Pronator Teres actions

Forearm Pronation assist elbow flexion

Pronator Teres Nerve

Median Nerve

Pronator Quadratus prox. attach.

Distal Ulna

Pronator Quadratus Dist. attach.

Distal Radius

Pronator Quadratus actions

Forearm Pronation

Pronator Quadratus Nerve

Median Nerve

Supinator prox. attach.

Lateral epicondyle humerus Prox Post Ulna

Supinator Dist. Attach.

Radius

Supinator Actions

Forearm Supination Wraps around radius

Supinator Nerve

Radial Nerve

Active Insufficiency

point where a multijoint muscle cannot shorten any further (agonist)

Passive Insufficiency

point where a multijoint muscle cannot elongate any further without damage to its fibers. (antagonist)