system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Insertion of extensor carpi ulnaris
assistant
The correct answer is  Ans. is 'c' i.e., Base of 5th MetacarpalExtensor carpi ulnariso Origin : Lateral epicondyle of humerus and posterior border ulnao Insertion : Base of 5th metacarpalo Nerve supply : Posterior interosseus nerveo Action : Extension (dorsiflexion) and adduction of hand.