QuestionSBA
QuestionChoice
The image shows a basal view of the skull base, with the front of the skull at the top, the occipital bone at the bottom, and the foramen magnum in the centre. Foramen ovale is a large oval opening in the greater wing of the sphenoid bone, anteromedial to the foramen spinosum. It allows the passage of the mandibular division of the trigeminal nerve (CN V3). However, the blue arrow indicates the foramen magnum, which is the largest opening of the skull base, in the occipital bone. It allows the passage of the spinal cord into the vertebral canal.
10041634
d
Foramen ovale
QuestionChoice
The image shows a basal view of the skull base, with the front of the skull at the top, the occipital bone at the bottom, and the foramen magnum in the centre. The hypoglossal canal is a small paired opening in the internal anterior aspect of the occipital bone forming the foramen magnum. It allows the passage of the hypoglossal nerve from the brainstem out towards the tongue. However, the blue arrow indicates the foramen magnum, which is the largest opening of the skull base, in the occipital bone. It allows the passage of the spinal cord into the vertebral canal.
10041633
c
Hypoglossal canal
QuestionChoice
The image shows a basal view of the skull base, with the front of the skull at the top, the occipital bone at the bottom, and the foramen magnum in the centre. The foramen rotundum is a round opening in the greater wing of the sphenoid bone, which allows the passage of the maxillary nerve (CN V2) out of the skull. However, the blue arrow indicates the foramen magnum, which is the largest opening of the skull base, in the occipital bone. It allows the passage of the spinal cord into the vertebral canal.
10041635
e
Foramen rotundum
QuestionChoice
The image shows a basal view of the skull base, with the front of the skull at the top, the occipital bone at the bottom, and the foramen magnum in the centre. The blue arrow indicates the foramen magnum, which is the largest opening of the skull base, in the occipital bone. It allows the passage of the spinal cord into the vertebral canal.
10041631
a
Foramen magnum
QuestionChoice
The image shows a basal view of the skull base, with the front of the skull at the top, the occipital bone at the bottom, and the foramen magnum in the centre. The jugular foramen is an irregular opening found at the junction between the temporal and the occipital bones of the skull base, allowing the passage of the jugular vein, the glossopharyngeal nerve (CN IX), the vagus nerve (CN X), and the accessory nerve (CN XI) out of the skull. However, the blue arrow indicates the foramen magnum, which is the largest opening of the skull base, in the occipital bone. It allows the passage of the spinal cord into the vertebral canal.
10041632
b
Jugular foramen
Concept
Chapter
2693
6282
Cranial nerve foramina
Topic
201
Head and neck anatomy
20625
Picture
3224
79 - Cranial nerve foramina (foramen magnum).png
images/heanpnnm1727765014825.jpg
images/heanpnnm1727765014825_256.jpg
images/heanpnnm1727765014825_512.jpg
2/gFDgJdYMN3eJdjeJuJebinWISwYAg=
Topic
201
Head and neck anatomy
Which of the following best describes the anatomical structure indicated by the blue arrow in the image below?
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a