颈静脉孔区解剖优秀课件

osseous relationships, superior view
• osseous relationships, posterosuperior view. The jugular foramen is best seen in a posterosuperior view oriented perpendicular to the clivus.
• larger lateral part, the sigmoid part, which receives the drainage of the sigmoid sinus, and a smaller medial part, the petrosal part, which receives the drainage of the inferior petrosal sinus
• the jugular foramen is located between the temporal and occipital bones
• sigmoid groove descends along the mastoid and crosses the occipitomastoid suture , turns forward on the upper surface of the jugular process , enters the foramen
颈静脉孔区解Βιβλιοθήκη Baidu优秀课件
• 颈静脉孔由颞骨岩部和枕骨颈突围成。 颞骨和枕骨向孔内的突起分别被称为颞 突和枕突，二者以纤维或骨桥连接，构 成孔内神经和血管的分隔。由颞突下方 沿颈静脉球内侧缘伸向后方的骨性隆起 称为颈内嵴，舌咽神经行于其内侧。
• 颈静脉孔为一自颅后窝通向前、外、下方的 骨性管道 。
• 颈静脉管（jugular canal）。
颈静脉孔的硬膜结构及分部
• Hovelacque将颈静脉孔分为前内侧的神经部和后外 侧的血管部两部分。
• Katsuta根据通过颈静脉孔的结构将其分为岩部、颈 内部（或神经部）和乙状窦部。
• 神经部的硬膜形成舌咽道和迷走道，分别有舌咽神 经和迷走神经及副神经穿过。舌咽道和迷走道位于 颈内突内侧,二者间隔以0.5-4.9mm宽的硬膜。
• posterosuperior view of the intrajugular process and ridge, which separate the sigmoid and petrosal parts of the jugular foramen
Rembrandt van Rijn (Dutch, 1606-1669). This painting is called "The Anatomy Lecture of Dr. Nicolaes Tulp", painted in 1632
• 神经部上外侧缘的硬膜返折增厚并伸向下内覆于舌 咽道和迷走道上方，称颈静脉孔硬膜返折,是辨认颅 神经的重要标志。
• sigmoid sinus descends in the sigmoid sulcus , sharp anterior turn to enter the jugular foramen. The jugular bulb extends upward under the petrous temporal bone toward the internal acoustic meatus
• from posterior and superior shows the shape of the foramen
• hypoglossal canal passes above the middle third of the occipital condyle and opens laterally into the interval between the jugular foramen and carotid canal
• the vestibular aqueduct opens onto the posterior surface of the temporal bone superolateral to the jugular foramen
• The inferior petrosal sinus extends along the petroclival fissure and enters the petrosal part of the foramen
• stylomastoid foramen is located lateral and the anterior half of the occipital condyle medial to the jugular foramen
• anterior and backward reveals the shape of the jugular foramen
• enlarged view
• intrajugular process projects into the interval between the sigmoid and petrosal parts of the foramen
• intrajugular ridge, extends forward from the intrajugular process along the medial side of the jugular bulb
• cochlear aqueduct opens above the petrosal part of the foramen , where the glossopharyngeal nerve enters the intrajugular part of the foramen on the medial side of the intrajugular process.