There are 12 cranial nerves in the body, all originating in the brain. They come in pairs and connect different body areas and organs to the brain. Cranial nerves can transmit two types of information ...

Note: Some students might have trouble discussing this topic because they may have a family member with Alzheimer's disease. Model a nerve cell. Explain to students that the nervous system functions ...

Oxygenated blood begins its course down the chest through the thoracic aorta, a major blood vessel with branches that serve the chest muscles and lungs. This becomes the abdominal aorta. The abdominal ...