[X]
01
Click on the structure to specify the target of your label
01
  • labels

Risorius

Other Terms: Musculus risorius, Muscle risorius

Muscle parts

None

Latin name

Musculus risorius

Latin muscle parts

None

Group

Branchial arch muscle – second arch (Facial muscle)

Etymology

The English name for this muscle is the laughing muscle. The word risorius comes from the Latin risus meaning “laugh.”

Origin

Somewhat variable, it can attach to the zygomatic arch, the parotid and masseteric fascia, and blend with fibers of the platysma

Insertion

Blends with other muscle fibers in the modiolus at the angle of the mouth

Action

Pulls the angle of the mouth laterally and somewhat superiorly.

Nerve supply

Facial nerve (Cranial nerve VII)

Blood supply

Small anastomotic branches from the first part of the facial artery; transverse facial artery.

Latin

Musculus risorius

French

Muscle risorius

Comments

Related Images

View All