Question

Foramen magnum is found on
A) Lateral side of skull
B) Neural canal
C)Anterior side of the skull
D) Posterior side of the skull

Answer 1

Hint: The hole in the skull from which the spinal cord moves to become the medulla oblongata is the Foramen magnum.

Complete answer:
First we should know about the skull to answer this question. The skull, the skeletal system of the head of the vertebrate, is made up of bones or cartilage, forming a unit that covers the brain and certain sensory organs. Part of the head is the upper jaw, but not the lower one. In comparison with the face, the human cranium, the portion which contains the brain, is globular and fairly huge. The base of the cranium of humans is the occipital bone that has a central opening named as foramen magnum to allow the spinal cord to enter it.
Now, let us find the solution from the options-
The majority of the upper lateral side of the skull contains the parietal bone. They are the paired bones, with the top of the skull connecting the right and left parietal bones respectively. Therefore, the option A is incorrect.
The neural canal is a cavity or cavity structure in the embryo's vertebrae that forms the brain ventricles and the spinal cord’s central canal, or the gap in the vertebral column created from the vertebrae via which the spinal cord passes. The spinal cord is therefore located in the neural canal. Therefore, the option B is incorrect.
The anterior skull comprises the facial bones which supports the eyes and face structures with bony structure. Therefore, the option C is incorrect.
The Foramen Magnum is found at the posterior side of the skull. That is a large oval hole in the bone of the occipital skull. This cavity is where the spinal cord passes around. It is found around the base of the medulla oblongata which splits the spinal cord below from the brain above.

Thus, the correct answer is option D Posterior side of the skull

Note:The foramen magnum is the skull’s biggest foramen which forms part of the occipital bone. With a wide anteroposterior diameter, it is oval in shape. As the opening narrows, Foramen magnum stenosis occurs, causing pressure on the spinal cord or brain.