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32 Cards in this Set
- Front
- Back
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Where are the 2 origins of the Biceps Brachii? |
Short head: Coracoid process of scapula Long head: supraglenoid tubercle of scapula |
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Where is the insertion of the Biceps Brachii? |
Radial tuberosity |
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What is the function of the Biceps Branchii? |
Powerful supinator of forearm, and flexes elbow when forearm is in spine position. |
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Where are the 3 origins of the Triceps Brachii? |
Lateral head: Posterior aspect of humerus Medial head: Posterior aspect of humerus (distal to origin of lateral head) Long head: Infraglenoid of scapula |
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Where is the Insertion of the Triceps Brachii? |
Olecranon of Ulna |
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What is the function of the Triceps Brachii? |
Works antagonistically with biceps brachii and is the main extensor of the arm |
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Where is the origin of the Brachioradialis? |
Lateral epicondyle of humerus |
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Where is the insertion of the Brachioradialis? |
Styloid process of radius |
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What is the function of the Brachioradialis? |
- Powerful elbow flexor (when radioulnar joint is midway between supination and pronation) - Plays bigger role than biceps brachii when forearm is pronated |
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Where is the origin of the Supinator? |
Lateral epicondyle of humerus |
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Where is the insertion of the Supinator? |
Anterior and lateral aspect of radius |
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What assists the biceps brachii in supinating the forearm? |
The Supinator |
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Where does the Flexor Carpi Radialis originate? |
As with all the wrist flexors, the medial epicondyle of the humerus |
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Where does the Flexor Carpi Radialis insert? |
The second metacarpal bone (that of the index finger) |
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What is the function of the Flexor Carpi Radialis? |
Flexes and abducts the hand at the wrist |
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Where does the Palmaris Longus originate? |
The medial epicondyle of the humerus |
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What inserts in a dense connective tissue structure called "Palmaris aponeurosis"? |
The Palmaris Longus |
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What is the function of the Palmaris Longus? |
Weak flexor of the wrist, often absent |
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Where does the Flexor Digitorum Superficialis originate? |
The medial epicondyle of the humerus, coronoid process of ulna, and anterior midshaft of the radius |
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What inserts at the second phalanges of the fingers 2 to 5? |
The Flexor Digitorum Superficialis |
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What is the function of the Flexor Digitorum Superificialis? |
It flexes the interphalangeal joints of digits 2 to 5 |
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What is the most superficial muscle on the ulnar side, it has two origins, the lateral epicondyle of the humerus and the ulna? |
The Extensor Carpi Ulnaris |
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What is the insertion of the Extensor Carpi Ulnaris? |
The base of the fifth metacarpal bone |
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What extends and adducts the hand at the wrist? |
The Extensor Carpi Ulnaris |
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What is the function of the Extensor Carpi Ulnaris? |
It extends and adducts the hand at the wrist |
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Where does the Extensor Digit Minimi originate? |
It originates at the lateral epicondyle of the humerus |
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What inserts at the fifth digit? |
The Extensor Digit Minimi |
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What is the function of the Extensor Digit Minimi? |
It serves to extend the interphalangeal joints of the little finger (digit 5) |
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What 3 parts originate at the strong fascia known as "flexor retinaculum" and the trapezium bone of the wrist at the base of the thumb? |
The Thenar Eminence |
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What are the three parts of the Thenar Eminence? |
Flexor pollicis brevis, abductor pollicis brevis, opponens pollicis |
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What is the insertion of the Thenar Eminence? |
Flexor pollicis brevis and abductor pollicis brevis insert at the proximal phalanx of thumb. Opponens pollicis inserts at the first metacarpal. |
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What flexes, abducts, and opposes the thumb? |
The Thenar Eminence |
