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PSYC 100 - PSYC100 Exam 2 Study Guide - Study Guide

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PSYC 100 - PSYC100 Exam 2 Study Guide - Study Guide

School: University of Maryland - College Park
Department: Psychology
Course: Social Psychology
Professor: Dylan Selterman
Term: Spring 2016
Tags: Intro to Psychology, Psychology, Psyc100, and Studyguide
Name: PSYC100 Exam 2 Study Guide
Description: Study guide for exam 2 of psyc100 based on the study smart questions
Uploaded: 04/06/2017
0 5 3 50 Reviews
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background image PSYC100 Exam 2 Study Smart Questions Module 5: Biological Foundations: Question 1: 
Describe what takes place on a chemical level in order for a neuron 
to send a signal
When neuron membrane is at rest the resting potential is negative (-
70mV) b/c there is more sodium (Na+) outside the cell than potassium 
(K+) inside the cell
When cell reaches its threshold it is at the point of depolarization at 
which the neuron fires
o Happens when positives enter temporarily switching the charges  inside and outside the cell Action potential – when neuron sends info down the axon o Inside neuron is slight negative, outside more positive Pumps then move sodium out of the nerve and potassium into the cell, 
thus restoring the charges 
Absolute refractory time - when sodium channels are inactive so other 
reaction can happen
o Channels start resetting to active state but cannot be stimulated  again Relative refractory period - channels start resetting and you can 
stimulate another action potential but need a stronger stimulus
o Caused by falling out of the potassium Question 2: 
Draw a diagram of a neuron, label all of its parts and describe their 
functions
Axon- part of the neuron that transmits
information away from the cell body and
carries it to the terminal
Axon Hillock- Joins the soma and axon to
collect the impulses before sending one
down the cell
Dendrites- Receives impulses from other
nerve cells
Schwann Cells- Surrounds some neurons
to increase how efficiently it can carry an impulse
Soma- Contains the genetic instructions for the function of the cell
background image Synapse- structure that permits a neuron to pass an electrical or 
chemical signal to another neuron
Terminal- Spreads the cell’s impulse out to reach other neurons Terminal Buttons- Links up to the dendrites of the next neuron in the 
chain
Question 3:
Explain how neurotransmitters carry signals from one cell to the 
other
synaptic transmission - info from one neuron flows to another neuron 
across a synapse via chemical and electrical synapses
Vesicles store various neurotransmitters and are sent out by the 
presynaptic neuron
neurotransmitter molecules diffuse across the synaptic cleft where 
they can bind with receptor sites on the post synaptic ending to 
influence the electrical response in the post synaptic neuron
o leads to excitation or inhibition  Reuptake - presynaptic neuron absorbs a signaling chemical after it has
sent a message so that it can be reused
Neurotransmitters bind to specific receptor sites causing specific 
reactions
Question 4: 
Draw a diagram of, and explain the functions, of the various nervous
systems
Afferent (a.k.a. Sensory) Division- The division of the Peripheral 
nervous system that carries signals from the body to the spinal cord
Autonomic NS- Controls the smooth muscles of the internal organs and 
glands.
Brain- Controls basic life functions, like the beating of your heart and 
your breathing
background image Central Nervous System (CNS)- 
functions to send signals from
one cell to others, or from one part of the body to  others and to receive feedback. Comprised of  brain and spinal cord. Efferent Division- The division of the
Peripheral nervous system that
carries signals from the spinal cord
to the body
Parasympathetic- Relaxes the
body during times of rest and
shifts activity to non-vital
systems (e.g., digestion,
reproductive organs)
Peripheral Nervous System
(PNS)- Comprised of the autonomic and somatic systems.
Somatic NS- Comprised of sensory and motor neurons from the spinal 
cord to the rest of the body.
Spinal Cord- Controls the reflex arc to remove your hand from a painful 
stimulus
Sympathetic- Triggers the body’s fight-or-flight systems (e.g., increased
heart rate for muscle activity, dilated pupils for better vision)
Question 5:
Use elaborative rehearsal to help you remember the functions of 
the brain parts
Amygdala- Center of fear and aggression Cerebellum- Controls movement and balance, as well as nonverbal 
learning, and the perception of time
Each of the 4 lobes Frontal lobes- Lobe that controls complex and intellectual thought, 
including the ability to plan, judge and think abstractly
Parietal lobes- Lobe that processes your sense of touch and how 
your body is positioned
Temporal lobes- Lobe involved with language production and 
comprehension
Occipital lobes- Lobe that processes visual information Hippocampus- Responsible for basic learning and memory Hypothalamus- Regulates body temperature, hunger, sleep cycles, 
and the experience of pleasure
background image Medulla- heart rate, digestion, coordinate movements, controls 
blood pressure
Pituitary gland-secrets many different hormones some of which 
effect other glands
Pons- movement, connects both hemispheres (deals w/ 
development of dreams)
Reticular formation- involved w/ attention sleep, sexual arousal, 
impulses and reflexes
Thalamus- relays sensory information and acts as a center for pain 
perception.
Module 6: Sensation and Perception Question 1: 
Diagram and explain how you are able to read this page
Pupil – hole that light enters through

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School: University of Maryland - College Park
Department: Psychology
Course: Social Psychology
Professor: Dylan Selterman
Term: Spring 2016
Tags: Intro to Psychology, Psychology, Psyc100, and Studyguide
Name: PSYC100 Exam 2 Study Guide
Description: Study guide for exam 2 of psyc100 based on the study smart questions
Uploaded: 04/06/2017
13 Pages 129 Views 103 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
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