sub-occipital triangle

Which muscles form the sub-occipital triangle?

• Rectus capitis posterior major and minor
• Obliquus capitis superior and inferior
• Semispinalis capitis and splenius capitis
• Sternocleidomastoid and scalene

Which cranial nerve passes through the sub-occipital triangle?

• Optic nerve
• Trigeminal nerve
• Abducens nerve
• Hypoglossal nerve

What is the arterial supply to the sub-occipital triangle?

• External carotid artery
• Vertebral artery
• Subclavian artery
• Axillary artery

What are the actions of the rectus capitis posterior muscles?

• Lateral flexion and rotation of the head
• Extension of the head and neck
• Flexion of the head and neck
• Depression of the mandible

Which muscle of the sub-occipital triangle is the largest?

• Obliquus capitis superior
• Semispinalis capitis
• Splenius capitis
• Rectus capitis posterior major

Which muscle of the sub-occipital triangle is innervated by C1?

• Rectus capitis posterior minor
• Obliquus capitis inferior
• Semispinalis capitis
• Splenius capitis

What is the clinical significance of the sub-occipital triangle?

• It is a common site of trigger points
• It is the location of the jugular
• It is the site of the foramen magnum
• It is the location of the atlas

Which muscle of the sub-occipital triangle originates from C7-T6?

• Splenius capitis
• Semispinalis capitis
• Obliquus capitis superior
• Rectus capitis posterior major

Which bone forms the floor of the sub-occipital triangle?

• Temporal bone
• Sphenoid bone
• Occipital bone
• Parietal bone

Which muscle of the sub-occipital triangle is not innervated by C1?

• Rectus capitis posterior major
• Obliquus capitis superior
• Semispinalis capitis
• Splenius capitis