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Questions and Answers
Which muscle forms the superomedial border of the suboccipital triangle?
Which muscle forms the superomedial border of the suboccipital triangle?
- Rectus capitis posterior major (correct)
- Obliquus capitis superior
- Semispinalis capitis
- Obliquus capitis inferior
What structure forms the floor of the suboccipital triangle?
What structure forms the floor of the suboccipital triangle?
- Ligamentum nuchae
- Semispinalis capitis
- Posterior atlanto-occipital membrane and posterior arch of vertebra C1 (correct)
- Posterior longitudinal ligament
Which of the following is located within the suboccipital triangle?
Which of the following is located within the suboccipital triangle?
- Internal carotid artery
- Hypoglossal nerve
- Accessory nerve
- Vertebral artery (correct)
The obliquus capitis inferior muscle forms which border of the suboccipital triangle?
The obliquus capitis inferior muscle forms which border of the suboccipital triangle?
Which structure forms the roof of the suboccipital triangle?
Which structure forms the roof of the suboccipital triangle?
Flashcards
Suboccipital Triangle
Suboccipital Triangle
An anatomical region located posterior to the upper cervical spine formed by specific muscles.
Superomedial boundary
Superomedial boundary
The boundary of the Suboccipital Triangle formed by the Rectus capitis posterior major muscle.
Superolateral boundary
Superolateral boundary
The boundary of the Suboccipital Triangle formed by the Obliquus capitis superior muscle.
Inferolateral boundary
Inferolateral boundary
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Contents of Suboccipital Triangle
Contents of Suboccipital Triangle
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Study Notes
Suboccipital Triangle Anatomy
- The suboccipital triangle is a small, roughly triangular-shaped space on the posterior aspect of the neck.
- Its boundaries are defined by specific muscles:
- Superior and medial border: Rectus capitis posterior major muscle.
- Superior and lateral border: Obliquus capitis superior muscle.
- Inferior and lateral border: Obliquus capitis inferior muscle.
- The floor of this triangle is formed by the posterior atlanto-occipital membrane and the posterior arch of vertebra C1.
- The roof of the triangle is covered by the semispinalis capitis muscle.
- Importantly, the suboccipital triangle houses crucial structures:
- Vertebral artery: This artery runs through the triangle, supplying blood to the brain.
- Suboccipital nerve: A nerve that innervates the muscles within the suboccipital region.
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