UT Arlington BIOL 3322 - Cell Structure & Electrical Transmission (2 pages)

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Cell Structure & Electrical Transmission

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Cell Structure & Electrical Transmission


cell structure including function and how electrical transmission works. studies that prove neurons have electrical transmission

Lecture number:
Lecture Note
University of Texas at Arlington
Biol 3322 - Brain and Behavior

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BIOL 3322 1nd Edition Lecture 4 I II III IV Internal structure of a cell a Nucleus chromosome gene protein b Transcription messenger RNA c Endoplasmic Reticulum site of RNA synthesis i Codon ii Info flow contained in genetic code iii DNA transcription mRNA translation polypeptide d Amino acids peptide bond polypeptide chain e Enzymes f Golgi bodies proteins go from ER to golgi where they are packaged g Microtubules then attached to a motor molecule moved along a microtubule Crossing the cell membrane a Channel ions can cross cell membrane through the appropriate channel b Gate gates open close to dictate when ions can cross c Pump changes shape to carry substances across Emergence a Cell function b Behavior Genomics a Human somatic cells have 23 pairs of chromosomes i Autosomes pairs 1 22 ii Sex chromosomes pair 23 b Wild type c Mutation i Can have positive effects ii Neutral effects iii Or negative effects most common iv Effects can be specific or wide spread v Tay Sachs Disease 2 copies required to exhibit trait vi Huntingtons Chorea 1 copy required to exhibit trait vii Down Syndrome viii Genetic engineering adding or removing genes from a genome or modification of a gene ix Selective breeding d Genotype e Phenotype f Dominant allele g Recessive allele h Complete dominance i Incomplete dominance These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute j Codominance Chapter 4 Electrical transmission Electricity linked to neuronal activity Galvani 18th century electrical stimulation Fritsch Hitzig mid 19th century electrical stimulation of the neocortex causes movement Bartholow 1874 first to report of human brain stimulation Electricity a flow of electrons from a body that contains a higher charge to a body that contains a lower charge Negative pole the source of electrons higher charge Positive pole location that electrons flow to lower charge Caton early 19th century

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