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23 Cards in this Set
- Front
- Back
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The suboccipital region refers to what?
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The space between the occipital bone, on the posterior skull, and the first two cervical vertebrae-the atlas and the axis
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what muscles define the suboccipital triangle?
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inferior oblique (forms the inferior border);
Rectus major (forms the medial border); Superior oblique (forms the lateral border) |
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Where does the inferior oblique attach?
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It is attached to the spinous process of C2 and the transverse process of C1
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Where does the rectus major attach?
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It is attached to the spinous process of C2 and the inferior nuchal line on the occipital bone.
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Where is the rectus minor?
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Lies medial of rectus major and originates on the posterior tubercle of the atlas and inserts on the inferior nuchal line
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Where does the superior oblique attach?
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It attaches to the transverse process of C1 and the occipital bone
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What two things are contained in the suboccipital triangle?
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The suboccipital nerve and the vertebral artery
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What is the suboccipital nerve?
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Dorsal primary ramus of C1-a motor nerve to the 4 muscles of the suboccipital region. It is located between the occipital bone and C1 vertebrae
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Where does the vertebral arteries pass through?
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Through the foramena transversaria of C1-C6 to eventually enter the cranial canal cavity via the foramen magnum.
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What happens after the vertebral arteries enter the cranial canal?
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The two vertebral arteries anastomose to form the basilar artery which provides numerous branches to the brain stem, cerebellum and cerebrum
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What is the greater occipital nerve?
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A cutaneous branch of the dorsal primary ramus of C2
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What does the greater occipital nerve do?
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Innervates the scalp in the occipital region
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Where is the greater occipital nerve located in the occipital region?
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Between C1 and C2. It passes inferior to the inferior oblique and then ascends to scalp
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What muscle does the greater occipital nerve pass through?
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The Semispinalis capitis
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Where does the superior oblique attach?
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It attaches to the transverse process of C1 and the occipital bone
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What two things are contained in the suboccipital triangle?
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The suboccipital nerve and the vertebral artery
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What is the suboccipital nerve?
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Dorsal primary ramus of C1-a motor nerve to the 4 muscles of the suboccipital region. It is located between the occipital bone and C1 vertebrae
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Where does the vertebral arteries pass through?
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Through the foramena transversaria of C1-C6 to eventually enter the cranial canal cavity via the foramen magnum.
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What happens after the vertebral arteries enter the cranial canal?
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The two vertebral arteries anastomose to form the basilar artery which provides numerous branches to the brain stem, cerebellum and cerebrum
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What is the greater occipital nerve?
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A cutaneous branch of the dorsal primary ramus of C2
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What does the greater occipital nerve do?
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Innervates the scalp in the occipital region
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Where is the greater occipital nerve located in the occipital region?
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Between C1 and C2. It passes inferior to the inferior oblique and then ascends to scalp
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What muscle does the greater occipital nerve pass through?
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The Semispinalis capitis
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