<prompt> Muscles forming boundaries of carotid triangle are all exceptPosterior belly of digastricSuperior belly of omohyoidInferior belly of omohyoidSternocleidomastoid  <response>: Boundaries of carotid triangle are :Anterosuperiorly posterior belly of digastric.Anteroinferiorly superior belly of omohyoid.Posteriorly sternocleidomastoid muscle. 