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Biopsychology - Exam 2 Review

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This document covers the last half of a 10 week biopsychology course. It has notes on the following topics: the chemistry of behavior, psychological pharmacology, neurotransmitters, vision and neural circuitry, hormones in behavior and sex organization. Covers chapters 4 -7 of "The Minds Machine".

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Uploaded on
January 3, 2025
Number of pages
9
Written in
2024/2025
Type
Class notes
Professor(s)
Emily owen
Contains
All classes

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EXAM 2 Review RECEPTORS ! NEUROTRANSMITTERS
Chapter 4 The of behavior (Blochem ) ! I N TR PIC CRITERIA
chemistry
:




>
- lon channels that when bound 1) can be synthesized and stored in axon terminals of presynaptic neurons
Soups vs . Sparks :
,




soups-chemicals crossed the
by a specific neurotransmitter, It
2)
is released when action potentials reach axon terminals
synaptic cleft
change shape to let certain lons 3 is recognized by specific receptors on the post synaptic membrane
sparks electrical signals crossed
=



the synaptic cleft
. 4) causes changes
pass through. in the post synaptic cell
Otto Loewi : won 1936 nobel prize >
-
these are the most efficient 5) blocking release inhibits functionality of both pre/post synaptic membranes
for proving"soups" was the answer
stimulated a frog heart to TYPES
↳ he lon transport channels
to organs .
pump a nutrient solution
It worked proving "soups" and
,
METAB TR PIC
Amino acid/peptide neurotransmitters : Heurotransmitters made up of a single /or
discovered acetylcholine . >
-
a receptor that s
not an small chain of amino acids. Examples : acetylcholine dopamine and
, ,
serotonin

lon channel meaning when gas neurotransmitters soluble gases that diffuse between neurons to alter ongoing
:
,




exogenous substances outside the body (drugs) a neurotransmitter attaches processes (and defy many neurotransmitter criterial
:




endogenous :
substances in the body (neurotrasmitter) to it it must send a 2nd
,
SPECIFICS




&
all acid
Eutamate
amino
messenger to open specific
↳ both
drugs and neurotransmitters effect the primary excitatory neurotransmitter the CNs
:
in or amine
IPSP neurotransmitters
to receptors on
brain by binding post con channels. GABA : primary inhibitory neurotransmitterIn the CNS

>
-
synaptic cells , affecting behavior. these allow a slower response Acetylcholine primary excitatory
:
neurotransmitter in smooth muscle
Electrochemical process involves electricity
moving down the axon ,
thus releasing chems .
While conotropic allows a faster Dopamine
:
can be excitatory and inhibitory based on receptor subtypes and ,
is the

into the synaptic cleft.
response "Feel good" neurotransmitter.

>
-
have
2 processes occur once neurotransmitters Norepinephrine : can be excitatory or inhibitory based on receptor subtype ,
is known

*
been released into the synaptic cleft. Glycine PNS inhibitory transmitter adrenaline
:
as

1) degredation 2) Reuptake like mood ,
serotonin : an inhibitory neurotransmitter that regulates things sleep appetite
,




SUMMARY pain , etc.

Substances bothInside (endo) and outside (exo) of the body can affect our mental function. Neurotransmitted (endogenous substances) can bind to conotropic receptors which allow

a fast reaction or metabotropic receptors that cause slow ones. There are multiple different neurotransmitters that can cause all sorts of inhibitory or excitatory neural signaling ,
which causes our overall brain function .

, AN A IDD)
RECEPTOR TYPES RECEPTOR BINDING NTAGONISTS/ANTAGONISTS
DIRECT AGONISTS : binds to
GLUTAMATE :
AMPA/NMDA conotropic receptors specific receptors GLUTAMATE :
EPSP In CNS

↳ AMPA by mimicking endogenous neurotransmitten and Agonist NMDA
:

receptors are the most plentiful in


the brain but NMDA receptors play a
key directly affects the response of postsynaptic cell .
Antagonist alcohol/hallucinogens
:




DIRECT ANTAGONISTS :
binds to specific receptor GABD IPSP CNS
learning/memory
:
role in the excitation of In


GABAD (iono) GABAB (metal and occupies receptor sites directly block GDBDa agonist benzos barbituates , steroids
to
any
:
GABD :
,
,





GABAP receptors mediate excitability in correct neurotransmitter to the postsynaptic cell. GABA a antagonist picrotoxin (induces seizures)
:




EXAMPLE TETRODOTOXIN GDBAB agonist baclofen (muscle relaxant
: :
the brain to prevent seizures.
E

diff blocks Nat channels from allowing Nat to GLYCINE :
IPSP In PNS
GABAB is also
inhibitory but via a .




mechanism (slower) cross the BBB and prevents transmission Antagonist Strychnine (convulsions)
:
,
causes

# GABA) Glutamate In the PNS. lock jaw and inhibits GDBA release
receptors are the only ones


we need to know + Serotonin 51-Treceptor
for mood regulation but ,
no other will be

tested . EFFECTS ON NEURO -
T
AGONISTS Increases the effects of neurotransmitter
:




on a post-synaptic cell (MORE inhibitory/excitatory
ANTAGONISTS :
decreases the effects of a


neurotransmitter on a post-synaptic cell

CLESS inhibitory / excitatory
SUMMARY


Amino acids are the most common neurotransmitters and serve as building blocks for proteins. The 3 main ones areolutamate , gaba and glycine . Each
,




receptor has either an agonist (that increases the NTS effect) or an antagonist (that prevents the effect of specific NTs).
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