PS101 Lecture Notes - Lecture 4: Axon Terminal, Action Potential, Somatic Nervous System
Document Summary
Standard deviation is an index score- based on the distribution. Tells us where, in relation to the population, the score falls. Tells us how likely the score is to occur. Neurons: specialized cells that carry messages throughout the nervous system, electro- chemical exchange- both electrical and chemical, differ in shapes and sizes. Glial cells: like the glue that holds neurons together, bring food, remove waste, ca(cid:374) i(cid:374) so(cid:373)e (cid:272)ases (cid:862)a(cid:272)t as (cid:374)euro(cid:374)s(cid:863) Types of neurons: afferent (sensory)- input. Relay information from the senses to the brain and spinal cord: efferent neurons (motor)- output. Send information from the central nervous system to the glands and muscles, enabling the body to move. Carry information between neurons in the central nervous system. Reflex arc: does not require the brain, contains 1 afferent neuron, 1 efferent neuron and an interneuron. Anatomy of a neuron: parts of the neuron. Dendrites; form dendritic branches, maximize the amount of information it can receive, accepts incoming signals.
