UL summary Flashcards
What is the origin and insertion of the biceps brachii?
Origin - long head is supraglenoid tubercle of scapula and short head is the coracoid process
Insertion - radial tuberosity and bicipital aponeurosis
What is the origin and insertion of the coracobrachialis?
Origin - coracoid process of the scapula
Insertion - medial side of humeral shaft at level of deltoid tubercle
What is the origin and insertion of the brachialis?
Origin - medial and lateral aspect of humeral shaft
Insertion - ulnar tuberosity
What is the innervation the the anterior upper arm?
Musculocutaneous nerve
Where is the insertion of the triceps brachii?
Olecranon of the ulna
What are the origins of the triceps brachii?
Lateral - humerus, superior to radial groove
Medial - humerus, inferior to radial groove
Long - infra-glenoid tubercle of the scapula
What is the innervation of the triceps brachii?
Radial nerve
What is A and B?
A - lateral head of triceps brachii
B - long head of triceps brachii
What are the roots of the musculocutaneous nerve?
C5-7
What are the roots of the axillary nerve?
C5 + 6
What are the roots of the median nerve?
C6-T1
What are the roots of the radial nerve?
C5-T1
What are the roots of the ulnar nerve?
C8-T1
What is the common flexor attachment for the anterior forearm muscles?
Medial epicondyle
What is the origin and insertion of the pronator teres?
Origin - medial epicondyle and coronoid process of the ulna
Insertion - mid-shaft of radius
What is the innervation of the anterior forearm?
Mainly median nerve except flexor carpi ulnaris and medial side of the FDP
What is the origin and insertion of the FDS?
Origin - medial epicondyle and radius
Insertion - 4 tendons attach to the lateral 4 digits on middle phalanx
What is the attachment of the flexor pollicus longus?
Distal phalanx of the thumb
What is the attachment of the FDP?
Distal phalanx of lateral 4 digits
What is the origin and insertion of the brachioradialis?
Origin - lateral supracondylar ridge of the humerus
Insertion - distal end of the radius
What is the common extensor attachment of the posterior forearm?
Lateral epicondyle
Where is the attachment of the extensor digitorium?
Extensor hood of lateral 4 digits
What is the innervation of the posterior forearm?
Radial nerve
What is the origin and insertion of the supinator?
Origin - lateral epicondyle and posterior surface of ulna
Insertion - posterior surface of radius
What is the innervation of the thenar muscles?
Median nerve
What is the innervation of the hypothenar muscles?
Ulnar nerve
What is the origin and insertion of the lumbricals?
Each lumbrical originates from tendon of FDP
Inserts onto extensor hood
What is the action of the lumbricals?
Flexion at MCP joint and extension of IPJ of each digit
What is the action of the dorsal and palmar interossei?
Dorsal - abduction
Palmar - adduction
What is the origin and insertion of the interossei?
Origin - medial and lateral surface of the metacarpals
Insertion - extensor hood and proximal phalanx of each finger
What are the main ligaments of the shoulder?
Coracoacromial, coracohumeral, glenohumeral and transverse humeral ligaments
