During embryonic development, mesoderm forms all types of muscles...

During embryonic development, almost all muscles in the human body are derived from the mesoderm.

However, there are a few exceptions. The ciliary muscles and the muscles of the iris (sphincter pupillae and dilator pupillae) in the eye are derived from the neuroectoderm (ectoderm).

Tongue muscles, diaphragm, and other skeletal or smooth muscles are mesodermal in origin.

Answer: ciliary muscles