The foramen magnum (Latin for 'great hole') is a large, oval-shaped opening in the occipital bone of the skull. 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 oblongata, passes through the foramen magnum as it exits the cranial cavity.

2023年3月22日 · The condylar part of the occipital bone forms the lateral walls of the foramen magnum. It is comprised of two occipital condyles and serves as an articular surface with the atlas (at the atlanto-occipital joint).

2023年7月24日 · The foramen magnum is the largest foramen of the skull. It is located in the most inferior portion of the cranial fossa as a part of the occipital bone. Its contents include the medulla oblongata, meninges, spinal root of cranial nerve XI, vertebral arteries, anterior and posterior spinal arteries, the tectorial membrane, and alar ligaments.

Foramen magnum, in anatomy, the opening in the base of the skull that connects the spinal cord to the brain. It is the largest foramen (opening) of the skull and is part of the occipital bone (the bone that forms the back and rear base of the skull).

2023年10月30日 · The foramen magnum is a large oval-shaped opening in the occipital bone that transmits the spinal cord. Learn its anatomy on Kenhub!

2023年10月30日 · The lateral parts of the occipital bone are located lateral to the foramen magnum and contain both under and upper surfaces. They comprise two kidney-shaped prominences (occipital condyles) that articulate with the …

2023年7月24日 · The foramen magnum is part of the occipital bone, through which the medulla oblongata, the accessory nerves, the anterior and posterior spinal arteries, the vertebral arteries, the alar ligaments, and the tectorial membranes passes.

2024年7月5日 · The foramen magnum is the largest foramen of the skull and is part of the occipital bone 1. It is oval in shape with a large anteroposterior diameter 2. The foramen magnum is found in the most inferior part of the posterior cranial fossa 3. It is traversed by vital structures including the medulla oblongata 1.

2020年12月28日 · The largest foramen (hole in bone tissue) in the body is the foramen magnum. It is part of the occipital bone at the skull base and surrounds several important central nervous system structures.

2025年1月17日 · The foramen magnum is a circular opening located at the base of the skull, where the occipital bone and the first cervical vertebra (C1, also known as the atlas) meet. The opening is surrounded by a bony ring known as the foramen magnum margin.