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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.
Apical foramen, the opening at the tip of the root of a tooth; Foramen ovale (heart), an opening between the venous and arterial sides of the fetal heart; Foramen transversarium, one of a pair of openings in each cervical vertebra, in which the vertebral artery travels; Greater sciatic foramen, a major foramen of the pelvis
Sectional organization of spinal cord. The spinal cord is the main pathway for information connecting the brain and peripheral nervous system. [3] [4] Much shorter than its protecting spinal column, the human spinal cord originates in the brainstem, passes through the foramen magnum, and continues through to the conus medullaris near the second lumbar vertebra before terminating in a fibrous ...
The head rests on the top part of the vertebral column, with the skull joining at C1 (the first cervical vertebra known as the atlas).The skeletal section of the head and neck forms the top part of the axial skeleton and is made up of the skull, hyoid bone, auditory ossicles, and cervical spine.
The pathophysiology described for it states that the penetrated air, which had led to the formation of pneumocephalus might have been forced caudally due to the raised intracranial pressure as a consequence of severe brain injury and patient's horizontal position allowing the entrapped air to pass through the foramen magnum into the spinal ...
Structurally, the endocranium consists of a boxlike shape, open at the top. The posterior margin exhibit the foramen magnum, an opening for the spinal cord.The floor of the endocranium has several paired openings for the cranial nerves, and the anterior margin holds a spongy construction, allowing for the external nasal nerves to pass through. [2]
The hypoglossal nerve leaves the skull through the hypoglossal canal, which is situated near the large opening for the spinal cord, the foramen magnum. After leaving the skull, the hypoglossal nerve spirals around the vagus nerve and then passes behind the deep belly of the digastric muscle .
They then proceed superiorly, in the transverse foramen of each cervical vertebra. [1] Once they have passed through the transverse foramen of C1 (also known as the atlas ), the vertebral arteries travel across the posterior arch of C1 and through the suboccipital triangle [ 3 ] before entering the foramen magnum .