腭骨锥突 - Processus pyramidalis

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描述

The pyramidal process projects backward and lateralward from the junction of the horizontal and vertical parts of palatine, and is received into the angular interval between the lower extremities of the pterygoid plates.

On its posterior surface is a smooth, grooved, triangular area, limited on either side by a rough articular furrow. The furrows articulate with the pterygoid plates, while the grooved intermediate area completes the lower part of the pterygoid fossa and gives origin to a few fibers of the Pterygoideus internus.

The anterior part of the lateral surface is rough, for articulation with the tuberosity of the maxilla; its posterior part consists of a smooth triangular area which appears, in the articulated skull, between the tuberosity of the maxilla and the lower part of the lateral pterygoid plate, and completes the lower part of the infratemporal fossa. On the base of the pyramidal process, close to its union with the horizontal part, are the lesser palatine foramina for the transmission of the posterior and middle palatine nerves.


结构高低级

大体解剖 > 骨, 骨骼系统 > 中轴骨骼 > 颅 > 腭骨 > 腭骨垂直板 > 腭骨锥突

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