NUTR 301 Lecture 7: L7_L8_Bio Foundations of Behavior.docx
20 Apr 2015
School
Department
Course
Professor
Document Summary
Incoming: sense organs (transducers: peripheral nervous system, all parts of our nervous system except for the brain & spinal cord. 2 major divisions: somatic nervous system (sns) Control of voluntary movements (willfully: eyes, hands, muscle contraction, etc. Neurons: sensory neurons incoming, motor neurons outgoing information from brain, autonomic nervous system (ans) Divided into: sympathetic ns, accelerates bodily processes, stored energy, alarm system, parasympathetic, returns back the normal state. All human behavior is rooted in a biological event: basic building block: the neuron, several types, afferent neurons. From sense organs brain: efferent neurons (motor) Allows the message to go faster: how neurons communicate, process, body fluid contains ions, some are (+) and some are ( , at rest: Neuron resting potential has a slight (-) charge. Incoming signal changes the ion balance ions rush in. 3 parts in a synapse: axon terminal. Sending neurons, releasing vesicles filled with neurotransmitter: gap. May change shape as a result of addiction behavior: process:
