BISC 230Lgx Lecture Notes - Lecture 2: Subarachnoid Hemorrhage, Central Sulcus, Precentral Gyrus

• School: USC
• Department: Biological Sciences
• Course: BISC 230Lgx
• Professor: Yazejian Bruce

Document Summary

Funcional divisions of the nervous system: central nervous system, brain, spinal chord, peripheral nervous system, cranial nerves - 12 from the brain, spinal nerves. Motor components relay output from cns to periphery o. Pns: clusters of nerve cells (neurons) are called ganglia. Axons (extensions of single cells) grouped into nerves. Cns: neurons are in sheets (corices, singular: cortex) or in clusters (nuclei, singular: nucleus) Rostral (human term: anterior): o the front side of the head in humans, or the head side of the body in animals. Caudal (human term: posterior): o the back side of the head in humans, or the tail side of animals. Dorsal (human term: posterior): o toward the back. Caudal (posterior) = toward the back of the head. Dorsal (superior) = toward the top of the head. Coronal: cut top to botom (along the xy plane looking at a person face-on) Sagital: cut front to back (along the yz plane)