Bradypnea: Abnormally slow breathing. A respiratory rate that is too slow. The normal rate of respirations (breaths per minute) depends on a number of factors, including the age of the individual and the degree of exertion.
- Braille system
Braille system: A system of raised-dot writing devised by Louis Braille (1809-1852) for the blind in which each letter is represented as a raised pattern that can be read by touching with the fingers. The System: Each braille character or “cell” is made up of 6 dot positions that are arranged in a rectangle comprising […]
Brain: The portion of the central nervous system that is located within the skull. It functions as a primary receiver, organizer, and distributor of information for the body. It has a right half and a left half, each of which is called a hemisphere.
- Brain aneurysm
An aneurysm of a blood vessel in the brain, usually due to a defect in the vessel at birth or from high blood pressure. Rupture of the aneurysm causes a sudden severe headache, often with nausea, vomiting, decreased consciousness, and can be life threatening.
- Brain anthrax
Brain anthrax: Anthrax infection of the central nervous system (the spinal cord and brain) and meninges (the membranes covering the brain and spinal cord. These microscopic findings come from a fatal case of anthrax that occurred in California in 1976. The details of this case have been described in a medical journal called Human Pathology […]
- Brain biopsy
Brain biopsy: Biopsy of the brain. Removal of a small piece of tissue from the brain for diagnostic purposes. One way the procedure may be done is by stereotactic needle biopsy in which the spot to be biopsied is located three-dimensionally, the information is entered into a computer, and the computer calculates the information and […]