Cerebral Ischemia. Cerebral ischemia or brain ischemia, is a condition that occurs when there isnât enough blood flow to the brain to meet metabolic demand. This leads to limited oxygen supply or cerebral hypoxia and leads to the death of brain tissue, cerebral infarction, or ischemic stroke.erebral ischemia or brain ischemia, is a condition that occurs when there isnât enough blood flow to the brain to meet metabolic demand.
The slug is the unit of mass in the US common system of units, where the pound is the unit of force. The pound is therefore the unit of weight since weight is defined as the force of gravity on an object.hile the pound force and pound weight are the widely used units for commerce in the United States, their use is strongly discouraged in scientific work. The standard units for most of scientific work are the SI units. A newton can be seen to be the force required to accelerate 1 kg of mass at 1 m/s 2.
Evolution: The banana slug is a mollusk, which came from the sea. Their stages of evolution can be seen in other various species of land and sea mollusks. Therefore, slugs are believed to have evolved from marine snails and to have once been protected by a large shell (Harper 1988).he banana slug is the second largest slug in the world, growing up to 10 inches in length. On average they range between 6-8 inches, with a life span of 1-7 years (Harper 1988). Their coloring is sometimes bright yellow, occasionally with black spots, or solid greenish.