|Foramen rotundum of Sphenoid|
Sphenoid bone. Upper surface. (Foramen rotundum labeled at center left)
Base of the skull. Upper surface. Sphenoid is yellow, and arrows indicate the foramen rotundum.)
|Latin||foramen rotundum ossis sphenoidalis|
|Anatomical terms of bone|
The foramen rotundum evolves in shape throughout the fetal period, and from birth to adolescence. It achieves a perfect ring-shaped formation in the fetus after the 4th fetal month. It is mostly oval-shaped in the fetal period, and round-shaped after birth (generally speaking). After birth, the rotundum is about 2.5 mm and in 15- to 17-year olds about 3 mm in length. The average diameter of the foramen rotundum in adults is 3.55 mm.
Foramen is the Latin term designating a hole-like opening. It derives from the Latin forare meaning to bore or perforate. Here, the opening is round as indicated by the Latin rotundum meaning round.
- Reymond J, Charuta A, Wysocki J (2005). "The morphology and morphometry of the foramina of the greater wing of the human sphenoid bone". Folia Morphologica. 64 (3): 188–93. PMID 16228954.
- Yanagi S (1987). "Developmental studies on the foramen rotundum, foramen ovale and foramen spinosum of the human sphenoid bone". The Hokkaido Journal of Medical Science. 62 (3): 485–96. PMID 3610040.
- Lang J, Maier R, Schafhauser O (1984). "Postnatal enlargement of the foramina rotundum, ovale et spinosum and their topographical changes". Anatomischer Anzeiger. 156 (5): 351–87. PMID 6486466.
- Anatomy photo:22:os-0905 at the SUNY Downstate Medical Center
- cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (V)
- Superior view of the base of the skull at winona.edu