lumbar vertebrae the five vertebrae between the thoracic vertebrae and the sacrum. vertebra magÂ´na the sacrum. odontoid vertebra the second cervical vertebra, or axis. vertebra plaÂ´na a condition of spondylitis in which the body of the vertebra is reduced to a sclerotic disk.
Generally, in the early stages of drowning, very little water enters the lungs: a small amount of water entering the trachea causes a muscular spasm that seals the airway and prevents the passage of both air and water until unconsciousness occurs.
What happens when poison is inside the body. How poison is carried round the body. Once a poison gets into the blood it is carried to the whole body as the blood is pumped round the body by the heart (Fig. 4). How poison is broken down by the body. Some poisons are changed by the body into other chemicals.