What type of vertebrae have openings in their transverse processes that guide the vertebral arteries up toward the brain?
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Accordingly, which spinal curvature develops as an infant begins to hold up his or her head?
Secondary curves are concave posteriorly, opposite in direction to the original fetal curvature. The cervical curve of the neck region develops as the infant begins to hold their head upright when sitting. Later, as the child begins to stand and then to walk, the lumbar curve of the lower back develops.
Likewise, what are the two primary curvatures seen in the vertebral column of a fetus? The vertebral column is curved, with two primary curvatures (thoracic and sacrococcygeal curves) and two secondary curvatures (cervical and lumbar curves).
Hereof, what step occurs first in the embryonic development of most bones?
Appositional growth occurs. A bony collar forms. The medullary cavity is formed.
What type of joint is found between the atlas and the dens of the axis?