Topic 4 - Extensors of the elbow

Question 1

M.anconeus

Answer 1

O: Lat. supracondylar crest and lat.+med. epicondyles of humerus
I: Proc.anconeus on olecranon
A: Extend the elbow

Question 2

M.tensor fascia antebrachii

Answer 2

O: From m.latissimus dorsi+margo cau. scapulae
I: Med. on tuber olecrani, then radiates into fascia antebrachii
A: Tense antebrachial fascia and extend elbow

Question 3

M.triceps brachii

Answer 3

O: -caput longum from distal 2/3 of margo cau. scapulae, -caput mediale from prox. med. surface of humerus, -caput laterale from linea tricipitis of humerus, -caput accessorium from cau. of collum humerii
I: Tuber olecranii
A: Extend elbow, -caput longum also flex shoulder