She died of sepsis from a ruptured intestine. ( 1 CNN)Actress Patty Duke died Tuesday as a result of sepsis from a ruptured intestine, according to Mitchell K. Stubbs & Associates, the agency that represented her. She was 69.
How Your Brain Works. The basic lower brain consists of the spinal cord, brain stem and diencephalon (the cerebellum and cortex are also present, but will be discussed in later sections). In turn, the brain stem comprises the medulla, pons, midbrain, hypothalamus and thalamus [source: Health Pages].
The brain is the portion of the central nervous system in vertebrates (animals with bones) that lies within the skull. In humans, the brain weighs about 3 pounds. Differences in weight and size do not correlate with differences in mental ability.