Heart block typically causes lightheadedness, fainting, and palpitations. Depending on the severity of the heart block, this can be dangerous. For example, a third-degree heart block can worsen pre-existing conditions, such as heart failure. It can cause loss of consciousness and even sudden cardiac arrest. There can also be chest pain.
Sacral vertebrae: There are 5 sacral vertebral bones. They are represented by the symbols S1 through S5 and are situated between the lumbar vertebrae and the coccyx (the lowest segment of the vertebral column).The sacral vertebrae are normally fused to form the sacrum.hey are represented by the symbols S1 through S5 and are situated between the lumbar vertebrae and the coccyx (the lowest segment of the vertebral column).
suffix -bra. The notion is of the spine as the hinge of the body. The bones of the pelvis are ankylosed together, and to a large though variable number of vertebrae. Its flesh is delicate and firm, and with the exception of the vertebrae, has no long bones. Between the neck and the complex and solid sacral bone there are sixteen vertebrae, and there are twelve pairs of ribs, as in Man. Then it fell, shearing through the scales and flesh and vertebrae.