foramen magnum

How To Use foramen magnum In A Sentence

• The mid-points on the anterior and posterior margins of the foramen magnum are respectively termed the basion and the opisthion. II. Osteology. 5c. The Exterior of the Skull
• The curved, expanded plate behind the foramen magnum is named the squama; the thick, somewhat quadrilateral piece in front of the foramen is called the basilar part, whilst on either side of the foramen is the lateral portion. II. Osteology. 5a. The Cranial Bones. 1. The Occipital Bone
• Objective The surgical management of foramen magnum malformation associated with syringomyelia is controversial.
• What we do know for certain is that walking bipedally coincided with a change in where our spinal column enters the skull through a "big hole" called the foramen magnum. Human Family Walks on All Fours
• The part of the squama above the inion and highest lines is named the planum occipitale, and is covered by the Occipitalis muscle; the part below is termed the planum nuchale, and is divided by the median nuchal line which runs downward and forward from the inion to the foramen magnum; this ridge gives attachment to the ligamentum nuchæ. II. Osteology. 5c. The Exterior of the Skull
• The condyles articulate with the atlas; occasionally, a facet located on the anterior margin of the foramen magnum, the so-called third occipital condyle, articulates with the dens.
• _ -- The _meningocele_ is commonest in the occipital region, where it escapes through a cleft in the bone between the foramen magnum and the occipital protuberance (Fig. 197). Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition.
• In front of the foramen magnum the basilar portion of the occipital and the posterior part of the body of the sphenoid form a grooved surface which supports the medulla oblongata and pons; in the young skull these bones are joined by a synchondrosis. II. Osteology. 5d. The Interior of the Skull
• In the triangular interval between these ligaments is another fibrous cord, the apical odontoid ligament (Fig. 308), which extends from the tip of the odontoid process to the anterior margin of the foramen magnum, being intimately blended with the deep portion of the anterior atlantoöccipital membrane and superior crus of the transverse ligament of the atlas. III. Syndesmology. 5c. Articulations of the Vertebral Column with the Cranium
• These small cerebellar projections - we call them the tonsils - have been compressed against the bony rim of the foramen magnum.