All of the following muscles are derivatives of para axial mesoderm except-: (A) Masseter, (B) diaphragm, (C) biceps femoris, (D) detrusor
Answer is D. Para axial (somite) derivatives- dermatome (lateral pa)- skin dermis myotome (middle pa)- skeletal muscles sclerotome (medial pa)- bone (veebrae, occipital skull bone) option 1,2 and 3 are skeletal muscles. Detrusor is a smooth muscle of genitourinary system derived from intermediate mesoderm.