Elbow joint structure
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Infraglenoid tubercle | Tricep muscle orgin
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| Supraglenoid tubercle | Orgin of Long head of biceps muscle
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| Coracoid process | Short head of biceps muscle
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| Trochlea | Articulate with ulna
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| Medial epicondyle | Pronator teres orgin flexor muscles
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| Lateral epicondyle | Anconeus and supinator muscles extensor muscle orgin
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| Lateral supracondylar ridge | Orgin brachioradialis
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| Olecranon process (back point of proximal ulna) | Triceps attachment insertion
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| Trochlear notch | Semilunar notch (anterior surface proximal ulna) articulates with trochlea of humerus
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| Coronoid process | Insertion for brachialis muscle (ulna below trochlear notch)
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| Ulnar tuberosity | attachment for brachialis muscle (insertion)
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| Radial tuberosity | Biceps attachment point (insertion)
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| Styloid process | Brachioradialis
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| Muscles of elbow and forearm | Brachialis, Brachioradialis, Biceps, Supinator, Triceps, Anconeus, Pronator teres, Pronator quadratus
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| Brachialis Orgin | Distal half of humerus, anterior surface
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| Brachailis Insertion | Coronoid process and ulnar tuberosity of the ulna
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| Brachialis | Elbow flexion from coronoid process and ulnar tuberosity
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| Brachialis Segmental:C5, C6 Terminal End is what? | Brachialis (Musculutaneous nerve)
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| Biceps Brachii orgin | Long head: supraglenoid tubercle of scapula and Short head is on coracoid process
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| Biceps Brachii insertion | Radial tuberosity of radius
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| Biceps Brachii action | Elbow flexion, forearm suppination of radial tuberosity of radius
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| Biceps segmental: C5, C6 Terminal End is what? | Biceps (Musculocutaneous nerve)
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| Brachioradialis Muscle orgin | Lateral supracondylar ridge on the humerus
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| Brachioradialis Insertion | Styloid process of radius
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| Brachioradialis Action | Elbow flexion from syloid process of radius
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| Brachioradialis segmental (C5, C6) Terminal end is what | Brachioradialis (Radial nerve)
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| Triceps orgin | Long head infraglenoid tubercle scapula -Short head inferior to lesser tubercle (lat side) Middle head post mid humerus
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| Triceps insertion | Olecrann process of ulna
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| Triceps action | Elbow extension
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| Triceps segmental (C7, C8) Terminal end is? | Triceps (Radial nerve)
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| Anconenus muscle orgin | Lateral epicondyle of humerus
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| Anconeus insertion | Lateral and inferior to olecranon process of ulna
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| Anconeus action | assists in elbow extension
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| Anconeus segmental (C7, C8) Terminal end is: | Anconeus (Radial nerve)
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| Pronator teres orgin | medial epicondyle of humeurs and coronoid process of ulna
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| Pronator teres insertion | Lateral aspect of radius at its midpoint
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| Pronator teres action | Forearm pronation, asistive in elbow flexion
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| Pronator teres segmental (C6, C7) Terminal end is? | Pronator teres (Medial Nerve)
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| Pronator Quadratus origin | Distal one-fourth of ulna
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| Pronator quadratus insertion | Fistal one-fourth of radius
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| Pronator quadratus action | forearm pronation
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| Pronator quadratus segmental (C8, T1) | Pronator quadratus (Median nerve)
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| Supinator origin | Lateral epicondyle humerus and adjacent ulna
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| Supinator insertion | Anerior surface of proximal radius
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| Supinator action | Forearm supinatiion
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| Supinator segmental (C6) | Radial nerve (segmental is)
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