BIO 208 Lecture Notes - Lecture 13: Reticular Formation, Brainstem, Diencephalon

• School: University of Maine
• Department: Biology
• Course: BIO 208
• Professor: Lenn Kass

Document Summary

Action potentials in all sensory and nervous tissue are identical to each other, they conduct to different regions of the brain genetically and are prepared to interpret all different sensations and their qualities. Cns interprets signals based on: 1. Rate of action potentials sent and received: 2. which structure or area of body sends action potential, 3. Which structure or area of brain/spinal cord receives them. Cns consists of brain and spinal cord: delicate tissue, high metabolic rate (high demand, protected and maintained by meninges, neuroglia and cerebrospinal fluid. The meninges: a series of membrane and fluid filled sacs, provide physical stability and shock absorption, some layers are highly vascular, cranial meninges are continuous of spinal meninges. Cerebral spinal fluid and ventricles: 1. Produced by choroid plexus in ventricles of the brain functions: The ventricles four (cid:862)hallow(cid:863) regio(cid:374)s i(cid:374) (cid:271)rai(cid:374) that produ(cid:272)e a(cid:374)d (cid:272)o(cid:374)tai(cid:374) c f.