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A cervical rib in humans is an extra rib which arises from the seventh cervical vertebra. Their presence is a congenital abnormality located above the normal first rib. A cervical rib is estimated to occur in 0.2% [6] to 0.5% [7] (1 in 200 to 500) of the population. [8] People may have a cervical rib on the right, left or both sides. [9] [10]
People may have a cervical rib on the right, left or both sides. [3] All are attached at the back to the thoracic vertebrae and are numbered from 1 to 12 according to the vertebrae to which they attach. The first rib is attached to thoracic vertebra 1 (T1). At the front of the body, most of the ribs are joined by costal cartilage to the sternum ...
About 1 in 200–500 people have an additional cervical rib, and there is a female predominance. [13] Intrathoracic supernumerary ribs are extremely rare. [ 14 ] The rib remnant of the 7th cervical vertebra on one or both sides is occasionally replaced by a free extra rib called a cervical rib , which can mechanically interfere with the nerves ...
Cervical rib – an additional rib [2] Diphallia – having two penes/penises; Hyperdontia – additional teeth [3] Pelvic digit – a bony growth in the soft tissue of the pelvic region; Polycephaly – an extra head; Polydactyly – additional fingers or toes [4] Polymelia – an extra arm or leg; Polyorchidism – having three or more ...
In many species, though not in mammals, the cervical vertebrae bear ribs. In many groups, such as lizards and saurischian dinosaurs, the cervical ribs are large; in birds, they are small and completely fused to the vertebrae. The transverse processes of mammals are homologous to the cervical ribs of other amniotes. In the whale, the cervical ...
Short ribs at the first lumbar vertebra, which is thus a transitional vertebra, since lumbar vertebrae normally do not have ribs attached to them. Transitional vertebrae have the characteristics of two types of vertebra. The condition usually involves the vertebral arch or transverse processes. It occurs at the cervicothoracic, thoracolumbar ...
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In humans, cervical vertebrae are the smallest of the true vertebrae and can be readily distinguished from those of the thoracic or lumbar regions by the presence of a foramen (hole) in each transverse process, through which the vertebral artery, vertebral veins, and inferior cervical ganglion pass. The remainder of this article focuses upon ...
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