Which of the following muscle is not a hybrid muscle: (A) Pectoralis major, (B) Extensor digitorum, (C) Flexor digitorum profundus, (D) Brachialis
Answer is B. Extensor digitorum Hybrid muscles are the muscles having more than one nerve supply Pctoralis major: lateral & medial pectoral nerves Brachialis: additional proprioceptive fibres from radial nerve, in addition to its muscular nerve, musculocutaneous nerve. Extensor digitorum is supplied by the posterior interosseous nerve only.