Muscles of the Forearm Flashcards
1
Q
A
Biceps Brachii
Origin
- Biceps Long Head - Supraglenoid Tubercle
- Biceps Short Head - Coracoid Process
Insertion
- Both Heads - Radial Tuberosity
Action
- Assists in flexion of the glenohumeral joint
- Adduction of the humerus at the glenohumeral joint, towards the midline (short head)
- Flexion of the humeroulnar joint
- Supination of the forearm at the radioulnar joint
2
Q
A
Brachialis
Origin
- Anterior Distal Humerus
Insertion
- Coranoid Process of Ulna
- Ulnar Tuberosity
Action
- Flexion of the humeroulnar joint
3
Q
A
Triceps Brachii
Origin
- Triceps Long Head - Infraglenoid Tubercle
- Triceps Lateral Head - Posterior Humerus, above the spiral groove
- Triceps Medial Head - Posterior Humerus, below the spiral groove
Insertion
- All Heads - Olecranon Process
Action
-
Extension of the humeroulnar joint
- Assists in adduction of the humerus at the glenohumeral joint (long head)
- Assists in extension of the humerus at the glenohumeral joint (long head)
4
Q
Reversed
Biceps Brachii
Origin
- Biceps Long Head - Supraglenoid Tubercle
- Biceps Short Head - Coracoid Process
Insertion
- Both Heads - Radial Tuberosity
Action
- Assists in flexion of the glenohumeral joint
- Adduction of the humerus at the glenohumeral joint, towards the midline (short head)
- Flexion of the humeroulnar joint
- Supination of the forearm at the radioulnar joint
A
5
Q
Reversed
Brachialis
Origin
- Anterior Distal Humerus
Insertion
- Coranoid Process of Ulna
- Ulnar Tuberosity
Action
- Flexion of the humeroulnar joint
A
6
Q
Reversed
Triceps Brachii
Origin
- Triceps Long Head - Infraglenoid Tubercle
- Triceps Lateral Head - Posterior Humerus, above the spiral groove
- Triceps Medial Head - Posterior Humerus, below the spiral groove
Insertion
- All Heads - Olecranon Process
Action
- Extension of the humeroulnar joint
- Assists in adduction of the humerus at the glenohumeral joint (long head)
- Assists in extension of the humerus at the glenohumeral joint (long head)
A
