BIOL 224 Lecture Notes - Lecture 5: Exosphere, Depolarization, Central Nervous System
Document Summary
Animal body systems for coordination & regulation: nervous system physiology (supplementary reading ch. General concepts: organ systems must be coordinated both within the animal and with the environment, two major systems involved, nervous system, endocrine system. Both act together allow for complex homeostatic control. Both a very fast coordination and regulation system. Uses modified neurons (sensory receptors: process and integrate information. Evaluates information based on past experience or genetics: transmit information. Signals used to transmit information to other cells throughout the body. Sense external and/or internal information: motor/efferent neurons. Sends response signals to central nervous system (cns: interneurons. Used to form connections between other neurons in the cns. Form myelin sheaths: transmit information away from cell to body primarily via action potential, speeds up transmission. Types (found in vertebrates: schwann cells myelinate pns neurons, oligodendrocytes myelinate cns neurons, astrocytes keep harmful substances out of brain ( blood-brain barrier ) Membrane potentials make up the basis of biolelectricity.
