Pharyngeal constrictor muscles Flashcards
ROSTRAL PHARYNGEAL CONSTRICTOR MUSCLES (Mm. CONSTRICTORES PHARYNGIS ROSTRALIS):
M. pterygopharyngeus
M. palatopharyngeus
M. stylopharyngeus rostralis
M. stylopharyngeus caudalis
all insert on: raphe pharyngis
M. pterygopharyngeus
Origin: os pterygoideum, aponeurosis palatina (except eq)
Insertion: raphe pharyngis
Action: spincter
M. palatopharyngeus
Origin: os palatinum et pterygoideum
Insertion: raphe pharyngis
Action: sphincter
M. stylopharyngeus rostralis
Origin: distal half of stylohyoideum
Insertion: raphe pharyngis
occurs in Ru
Action: sphincter
M. stylopharyngeus caudalis
Origin: proximal half of stylohyoideum
Insertion: wall of pharynx
action: dilatator
MIDDLE PHARYNGEAL CONSTRICTOR MUSCLES (Mm. CONSTRICTORES PHARYNGIS MEDIUS, M. HYPOPHARYNGEUS
M.hyopharyngeus
M. ceratopharyngeus
M. chondropharyngeus
m.hyopharyngeus
O: hyoid (thyrohyoid?)
Insertion: raphe pharyngis
Action: sphincter
M. ceratopharyngeus
Origin: ceratohyoideum
Insertion: raphe pharyngis
Action: sphincter
M. chondropharyngeus
Origin: thyrohyoideum
Insertion: raphe pharyngis
Action: sphincter
CAUDAL PHARYNGEAL CONSTRICTOR MUSCLES (Mm. CONSTRICTORES PHARYNGIS CAUDALES):
M. thyropharyngeus
M. cricopharyngeus
M. thyropharyngeus
Origin: linea obligua of the thyroid cartilage
Insertion: raphe pharyngis
Action: sphincter
M. cricopharyngeus
Origin: cricoid cartilage
Insertion: raphe pharyngis
Action: sphincter