Facial muscle that attaches to the fascia of the masseter muscle and the facia of the skin in the region of the corner (angle) of the mouth. Even in species in which this muscle is present, it is highly variable. A true risorius muscle may only be present in Hominins (humans and great apes). See Diogo 2008; Diogo et al., 2009; Burrows et al.., 2011., also DuBrul, 1980. [ MFMO:0000141 ]
Synonyms: musculus risorius risorius
Term information
- SCTID:244755003
- FMA:46838
- MFMO:0000141
- Wikipedia:Risorius
feed_aligned, human_reference_atlas
Term relations
- facial muscle and dorsal to some platysma and ventral to some zygomaticus major muscle and attached to some masseter muscle and attached to some skin of body
- facial muscle
- has muscle insertion some facial modiolus
- ventral to some zygomaticus major muscle
- dorsal to some platysma
- in taxon some Homininae
- attached to some skin of body
- attached to some masseter muscle
- innervated_by some facial nerve