All of the following muscles are derivatives of para axial mesoderm except-
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.
Masseter
diaphragm
biceps femoris
detrusor
Embryology and Histology