Deep scutuloauricular muscles
Musculi scutuloauriculares profundi
- Synonym: Scutuloauriculares profundi muscle
Definition
The scutuloauriculares profundi muscles are major and minor muscles from the ventral surface of the scutiform cartilage to the eminentia conchae. They turn the intertragic notch caudally.
Origin: scutiform cartilage
Insertion: auricle
Artery:rostral auricular branch of the superficial temporal artery
Nerve: major scutuloauricularis profundi: auriculopalpebral nerve / minor scutuloauricularis profundi: caudal auricular nerve
Action: both turn the intertragic notch caudally
Antagonist: Cervicoauricularis muscles
Description:
The scutuloauriculares profundi muscles are short, thick, fleshy bands, extending from the ventral surface of the scutiform cartilage to the eminentia conchae. They are largely hidden by the scutiform cartilage.
The major scutuloauricularis profundi muscle, which is stronger and longer, extends from the rostral part of the deep surface of the scutiform cartilage to the caudal surface of the eminentia conchae.
The minor scutuloauricularis profundi muscle crosses the dorsal surface of the major scutuloauricularis profundi muscle in a X shape. It extends from the caudal part of the deep surface of the scutiform cartilage to join the base of the auricle, rostrally to the major scutuloauricularis profundi muscle.
References
Barone R. Anatomie comparée des mammifères domestiques, Tome 2, Arthrologie et myologie, 4th edition, Vigot, Paris, 2017.
Constantinescu GM, Schaller O. Illustrated veterinary anatomical nomenclature. 3rd Edition. Enke Verlag, Stuttgart, 2012.
