<P> The foramen magnum ( Latin : great hole ) is a large oval opening ( foramen ) in the occipital bone of the skull in humans and various other animals . It is one of the several oval or circular openings ( foramina ) in the base of the skull . The spinal cord , an extension of the medulla , passes through the foramen magnum as it exits the cranial cavity . Apart from the transmission of the medulla oblongata and its membranes , the foramen magnum transmits the vertebral arteries , the anterior and posterior spinal arteries , the tectorial membranes and alar ligaments . It also transmits the spinal component of the accessory nerve into the skull . </P>
<P> The foramen magnum ( Latin : great hole ) is a large oval opening ( foramen ) in the occipital bone of the skull in humans and various other animals . It is one of the several oval or circular openings ( foramina ) in the base of the skull . The spinal cord , an extension of the medulla , passes through the foramen magnum as it exits the cranial cavity . Apart from the transmission of the medulla oblongata and its membranes , the foramen magnum transmits the vertebral arteries , the anterior and posterior spinal arteries , the tectorial membranes and alar ligaments . It also transmits the spinal component of the accessory nerve into the skull . </P>
the foramen magnus is a big hole in which of the following bones
the foramen magnus is a big hole in which of the following bones
the occipital bone of the skull
the occipital bone of the skull