PSY295 Week 3 January 19 and 21 2010 (2)

PSY295 Week 3 January 19 and 21 2010 (2) - Lecture 3: The...

Info iconThis preview shows pages 1–16. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Lecture 3: The Structure and Term Test #1 Test is based on Weeks 1-4 (all lectures from Jan 5 Jan 28) and Chapters 1-6 Next Tuesday (Jan 26), I will be telling you what material you do NOT need to know Portrait: Single-Cell Recording Single-Cell Recording Insertion of ultrathin wires into the brain to record the electrical activity of a single neuron Grandmother Cells Specialized neurons that respond to specific objects vs vs The Neurons Structure Dendrites Collect information from other cells Increase cells surface area Dendritic spines Axon Extends out from the cell body Axon hillock Axon collateral - branches of the axon Terminal Button End foot at the end of each teleodendrion Synapse Space between the dendritic spine and the terminal button Neurotransmitter Chemical released from terminal buttons that carries the message across the synapse The Cell as a Factory The Cell Membrane: Barrier and Gatekeeper Extracellular fluid Fluid outside, cushions the cell Intracellular fluid or Cytoplasm Fluid inside Concentration of dissolved substances in the extracellular and intracellular fluid is different Cell Membrane Structure Regulates movement of substances and concentration of salts and other chemicals Phospholipid Bilayer Head Phosphorus, polar, hydrophilic Tail Lipids, no polarity, hydrophobic How the Cell Membrane Functions Impermeable to intracellular and extracellular water Ions Charged particles Cannot freely enter the cell due to the polar surface How do substances cross the membrane? Embedded proteins act as gates The Nucleus: Blueprints for Proteins Chromosomes Contain blueprints for proteins Consist of DNA, which consists of four nucleotide bases Adenine (A) Thymine (T) Guanine (G) Cytosine (C) Double-helical structure The Nucleus: Blueprints for Proteins Gene Segment of DNA Functional units that control the transmission and expression of traits from one generation to the next Amino Acid Building blocks of proteins Protein Synthesis Messenger Ribonucleic Acid (mRNA) Carries genetic code out of the nucleus to the ribosomes in the ER Protein Synthesis Ribosomes Translates the genetic code from the mRNA into a specific amino acid chain Polypeptide Chain Chain of amino acids Amino acids link together by a peptide bond, a bond between carbon and nitrogen Folded polypeptide chain = protein Combination of two or more Golgi Bodies and Microtubules: Protein Packaging and Shipment What do Membrane Proteins Do?...
View Full Document

This note was uploaded on 05/22/2010 for the course PSYCH Psy295 taught by Professor Prof during the Spring '10 term at York University.

Page1 / 88

PSY295 Week 3 January 19 and 21 2010 (2) - Lecture 3: The...

This preview shows document pages 1 - 16. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online