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FOREARM EXTENSOR Muscle Origin Insertion Action Triceps brachii Long head: infraglenoid tubercle of scapula Lateral head: Posterior shaft of humerus Medial head: posterior humeral shaft distal to radial groove By a common tendon into the olecranon process of ulna UNIT 4: MUSCLES THAT ACT ON THE FOREARM, WRIST, AND FINGERS A. Click on each muscle and watch the flix. In addition view the muscle groups in the following A and P Flix: Group Muscle Actions and Joints: • Muscles of the Forearm (a), (b), and (c) SUPINATION/PRONATION OF FOREARM Muscle Origin Insertion Action Pronator teres Medial epicondyle of humerus and coronoid of ulna Midshaft of lateral radius Supinator Lateral epicondyle of humerus; proximal ulna Proximal end of radius Pronator quadratus Distal portion of anterior ulnar shaft Distal surface of anterior radius 

          FOREARM EXTENSOR
Muscle Origin Insertion Action
Triceps brachii
Long head: infraglenoid tubercle of scapula
Lateral head: Posterior shaft of humerus
Medial head: posterior humeral shaft distal to radial groove
By a common tendon into the olecranon process of ulna
UNIT 4: MUSCLES THAT ACT ON THE FOREARM, WRIST, AND FINGERS
A. Click on each muscle and watch the flix. In addition view the muscle groups in the following A and P Flix: Group Muscle Actions and Joints:
• Muscles of the Forearm (a), (b), and (c)
SUPINATION/PRONATION OF FOREARM
Muscle Origin Insertion Action
Pronator teres Medial epicondyle of humerus and coronoid of ulna Midshaft of lateral radius
Supinator Lateral epicondyle of humerus; proximal ulna Proximal end of radius
Pronator quadratus Distal portion of anterior ulnar shaft Distal surface of anterior radius
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FOREARM EXTENSOR Muscle Origin Insertion Action Triceps brachii Long head: infraglenoid tubercle of scapula Lateral head: Posterior shaft of humerus Medial head: posterior humeral shaft distal to radial groove By a common tendon into the olecranon process of ulna UNIT 4: MUSCLES THAT ACT ON THE FOREARM, WRIST, AND FINGERS A. Click on each muscle and watch the flix. In addition view the muscle groups in the following A and P Flix: Group Muscle Actions and Joints: • Muscles of the Forearm (a), (b), and (c) SUPINATION/PRONATION OF FOREARM Muscle Origin Insertion Action Pronator teres Medial epicondyle of humerus and coronoid of ulna Midshaft of lateral radius Supinator Lateral epicondyle of humerus; proximal ulna Proximal end of radius Pronator quadratus Distal portion of anterior ulnar shaft Distal surface of anterior radius

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Biology for AP Courses
Biology for AP Courses
Julianne Zedalis, John Eggebrecht
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FOREARM EXTENSOR Muscle Origin Insertion Action UNIT 4: MUSCLES THAT ACT ON THE FOREARM, WRIST, AND FINGERS A. Click on each muscle and watch the flix. In addition view the muscle groups in the following A and P Flix: Group Muscle Actions and Joints: • Muscles of the Forearm (a), (b), and (c) SUPINATION/PRONATION OF FOREARM Muscle Origin Insertion Action Pronator teres Medial epicondyle of humerus and coronoid of ulna Midshaft of lateral radius Supinator Lateral epicondyle of humerus; proximal ulna Proximal end of radius Pronator quadratus Distal portion of anterior ulnar shaft Distal surface of anterior radius
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FOREARM EXTENSOR Muscle Origin Insertion Action UNIT 4: MUSCLES THAT ACT ON THE FOREARM, WRIST, AND FINGERS A. Click on each muscle and watch the flix. In addition view the muscle groups in the following A and P Flix: Group Muscle Actions and Joints: • Muscles of the Forearm (a), (b), and (c) SUPINATION/PRONATION OF FOREARM Muscle Origin Insertion Action Pronator teres Medial epicondyle of humerus and coronoid of ulna Midshaft of lateral radius Supinator Lateral epicondyle of humerus; proximal ulna Proximal end of radius Pronator quadratus Distal portion of anterior ulnar shaft Distal surface of anterior radius

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Transcript

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0:00 Hello everyone.
00:01 So here in the question it is asked that which part is farthest from the nail growth center.
00:10 So as we all know that nails are certain parts of the body that grow continuously throughout the life.
00:20 So this grows continuously.
00:23 And also we can say that when this grow throughout the life, there are certain.
00:30 Parts that grow continuously.
00:32 So here in the diagram if we focus here we have the nail root at this portion...
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