Flashcards in Lab Exam 1 Deck (32)
What is innervating the teres major?
What is innervating the subscapularis?
Where is the supinator located?
On the radial side up near elbow
Where do all flexors originate?
Where does the triceps brachii insert?
Olecranon process - elbow, end of the ulna
What is the origin of the long head of the triceps?
Infraglenoid tubercle of the scapula
What is the origin of the medial head of the triceps?
below the radial sulcus (groove)
What is the origin for the lateral head of the triceps?
Above the radial sulcus (groove)
Where does the long head of the biceps brachii originate?
Supraglenoid tubercle - goes up through intertubercular sulcus
Where does the short head of the biceps brachii originate?
Coracoid process of the scapula
What is the insertion of the biceps brachii?
Radial tuberosity and the bicipital aponeurosis into deep fascia on medial part of forearm
What is the coronoid process?
The little sticky outey bone at the elbow on the ulna, under the trochlear notch.
What is the origin of the brachialis?
Anterior surface of the humerus, distal half
What is the insertion of the brachialis?
Coronoid process and tuberosity of the ulna
What is the origin of the flexor digitorum superficialis?
Medial epicondyle of the humerus
What is the insertion of the flexor digitorum superficialis?
Anterior margins on the bases of the middle phalanges of the four fingers
What is the origin of the flexor digitorum profundus?
Upper 3/4 of the volar and medial surfaces of the body of the ulna, interosseous membrane and deep fascia of the forearm
What is the insertion of the flexor digitorum profundus?
Base of the distal phalanges of the fingers
Where does the flexor pollicis longus originate?
The middle 2/4 of the volar surface of the radius and the adjacent interosseus membrane
Where does the flexor pollicis longus insert?
The base of the distal phalanx of the thumb.
Where does the extensor pollicis longus orginate?
Middle third of posterior surface of ulna, interosseous membrane
Where does the extensor pollicis longus insert?
Thumb, distal phalanx
Where does the extensor pollicis brevis originate?
Radius and the interosseous membrane
Where does the extensor pollicis brevis insert?
Thumb, proximal phalanx
What innervates the dorsal interossei of the hand?
Deep branch of ulnar nerve
What innervates the palmar interossei muscles of the hand?
Deep branch of the ulnar nerve
What innervates the lumbricals of the hand?
1 and 2 - median nerve
3 and 4 - deep branch of ulnar nerve
What is the function of the subscapularis?
internal rotation (rotates head of humerus medially)
What are the functions of the infraspinatus and the teres minor?
Part of rotator cuff, laterally rotate the humerus, transverse adduction
What is the function of the teres major?
Medial rotator, adductor of the humerus, stabilizes humoral head in the glenoid cavity
What is the function of the supraspinatus muscle?
Abductor of the arm, part of rotator cuff, stabilizes head of the humerus