Exam 1-Study guide - PsychExam1StudyGuide 06:50...

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Psych-Exam 1 Study Guide 06:50 Vagus tube- goes to intestines  Notice that the Brain is hollow   Neuroanatomy directions: Anterior (aka Rostral) = front end or towards the nose Posterior (aka Caudal) = back end or towards the tail Lateral = towards the side Medial = towards the middle Dorsal = towards the back  Ventral = towards the belly Amino Acids Small, big Negative, positive, uncharged. Hydrophobic, hydrophilic Side chains (“R” group) Chains of amino acids fold naturally into specific shapes. A common one is a group of  helices  (more than one helix). After an another enzyme separates the two strands of DNA, an enzyme called  RNA  Polymerase  fills in the opposite bases for each strand.
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Remember that a protein is a chain of amino acids • Every 3 bases of DNA = 1 amino acid   So if TCT = arginine   TCTTCT=arg-arg Neurotransmitters Action potential-Sequential opening and closing of ion channels change the electrical  potential across the neuronal cell membrane and generate an action potential Axon hillock-integrates excitatory postsynaptic potentials (EPSP’s) and inhibitory  postsynaptic potentials (IPSP’s) and “decides” whether or not an action potential will be  generated. EPSPs –increase chances of generating an action potential IPSPs –decrease chances of generating an action potential Action potentials moving down the axon are ‘all-or-nothing.’ There aren’t big ones or little  ones – they’re all the same size. Information about the intensity of a stimulus is coded  by the  frequency  of the  action potentials. Sagittal plane- vertical  Horizontal plane- horizontal  Frontal plane=coronal=transverse- side-ways Group of neuron cell bodies CNS- nucleus  PNS- ganglion  Four Ventricles
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Forebrain  Third ventricle-hypothalamus  Midbrain Cerebral aqueduct in between third and fourth Hind brain Fourth ventricle- cerebellum, Pons, medulla oblongata  Peripheral nervous system Cranial nerves: control muscles and get sensory information around the neck and face 
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This document was uploaded on 10/27/2011 for the course PORTUGUESE 312 at UMass (Amherst).

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Exam 1-Study guide - PsychExam1StudyGuide 06:50...

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