Deep extensors of the forearm/wrist/digits
What is the origin of the supinator?
Lateral epicondyle of the humerus (LEH)
What is the origin of extensor carpi radialis longus?
supracondylar crest and lateral epicondyle of humerus (LEH)
What are the two heads to biceps brachii?
Long and short
Long, medial, and lateral head
What two muscles are NOT innervated by the facial nerve?
Temporalis and masseter
What is the insertion of the abductor pollicis longus?
Base of metacarpal 1
What is the insertion of the extensor carpi radialis brevis?
Base of metacarpal 3
What is the origin of the coracobrachialis?
The coracoid process of the scapula
What is the innervation of the teres minor?
Axillary nerve
What nerve innervates most of the muscles in the face?
What is the action of the extensor pollicis brevis?
Extends thumb and abducts hand.
What is the innervation of the extensor carpi ulnaris?
Radial nerve
What is the innervation of the brachialis?
Musculocutaneous nerve
What is the origin of the deltoideus?
Spine and acromion process of scapula and lateral clavicle
What is the action of the mentalis?
Wrinkles the chin
What is the innervation of extensor pollicis longus?
Radial nerve
What is the insertion of the extensor digiti minimi?
Distal phalanx of finger 5
What is the insertion of the biceps brachii?
Radial tuberosity of radius
What is the action of the triceps brachii?
Extends forearm at the elbow
What is the action of the Risorius?
Pulls corner of the lips laterally
What is the origin AND insertion of extensor indicis?
Ulna and interosseous membrane, dorsal surface of index finger
What is the action of the brachioradialis?
flexes forearm at the elbow
What are the two different origins of the long head AND short head of the biceps brachii?
Upper margin of glenoid fossa of scapula AND coracoid process of scapula
What are the origins of the long, medial, and lateral heads of the triceps brachii?
Inferior margin of glenoid fossa of scapula, posterior surface of humeral shaft, and posterior surface of humeral shaft.
What is the action of the depressor labii inferioris?
Depresses lower lip