O

All anatomy entries starting with "O"

18 entries

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

18 entries · Bones

Bone Obturator Foramen foramen obturatum Pelvis & Hip The obturator foramen is the largest foramen in the skeleton, formed by the ischium posteriorly and… Bone Occipital Bone os occipitale Head & Skull The occipital bone forms the posterior and inferior cranium, featuring the foramen magnum through which the… Bone Olecranon olecranon ulnae Upper Arm The olecranon is the posterior prominence of the proximal ulna that fits into the olecranon fossa… Bone Olecranon Fossa of Humerus fossa olecrani humeri Upper Arm The olecranon fossa is a deep depression on the posterior surface of the distal humerus that… Bone Olecranon Process olecranon Forearm The olecranon is the large posterior prominence of the proximal ulna, providing the insertion for the… Bone Optic Canal canalis opticus Head & Skull The optic canal is a bony channel through the lesser wing of the sphenoid, approximately 8-10… Bone Orbital Apex apex orbitae Head & Skull The orbital apex is the posterior vertex of the pyramidal orbit, where the optic canal (transmitting… Bone Orbital Floor paries inferior orbitae Head & Skull The orbital floor is formed predominantly by the orbital plate of the maxilla, with contributions from… Bone Orbital Plate of the Frontal Bone pars orbitalis ossis frontalis Head & Skull The orbital plate of the frontal bone (orbital roof) is the thin horizontal plate of the… Bone Orbital Roof paries superior orbitae Head & Skull The roof of the orbit is formed primarily by the orbital plate of the frontal bone,… Bone Os Acromiale os acromiale Shoulder The os acromiale is a failure of fusion of the acromial secondary ossification centre, present in… Bone Os Calcis Secundarius os calcis secundarius Foot & Ankle The os calcis secundarius is a rare accessory ossicle located on the superior-anterior surface of the… Bone Os Intermetatarseum os intermetatarseum Foot & Ankle The os intermetatarseum is an accessory ossicle located at the base of the first or second… Bone Os Naviculare Accessorium os naviculare accessorium Foot & Ankle The accessory navicular (os naviculare accessorium) is an accessory ossicle adjacent to the navicular tuberosity, present… Bone Os Peroneum os peroneum Foot & Ankle The os peroneum is a sesamoid ossicle embedded within the peroneus longus tendon as it curves… Bone Os Trigonum os trigonum Foot & Ankle The os trigonum is a small accessory ossicle posterior to the lateral talar posterior process, present… Bone Os Vesalianum of the Foot os vesalianum pedis Foot & Ankle The os vesalianum is a small accessory ossicle at the proximal lateral foot, located at or… Bone Ossa Suturarum ossa suturarum (Wormian bones) Head & Skull Sutural bones (Wormian bones) are small accessory bones that develop within the cranial sutures, particularly the…

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