WEEK 5 STUDY GUIDE
Alterations in Neurobiological Functions
Comprehensive Review
Exam Study Guide
Focused on Key Concepts
, lOMoARcPSD| 51648332
Alterations in Neurobiological Functions
/ / /
DEPRESSION
Introduction to Depression/ /
Major/depressive/disorder/is/a/mood/disorder/characterized/by/depressive/ symptoms/that/last
/longer/than/2/weeks./Though/the/exact/cause/is/unknown,/ depression/can/be/influenced/by/g
enetic/and/environmental/factors./Stressful/ life/events,/such/as/giving/birth/or/experiencing/e
motional/trauma,/can/also/ impact/the/development/of/depression./Recent/research/has/tied/d
epression/to/ decreased/activity/of/the/prefrontal/cortex/(Buelt,/2023)./The/prefrontal/cortex/ co
ntrols/attention,/memory,/mood,/and/personality.
This/learning/module/focuses/on/disease/processes/associated/with/depression/ and/enables/
you/to/meet/the/following/course/outcomes:
● CO/1:/Analyze/pathophysiologic/mechanisms/associated/with/selected/ disease/st
ates/across/the/lifespan.
● CO/2:/Examine/the/way/in/which/homeostatic,/adaptive,/and/ compensatory/physiologic
al/mechanisms/can/be/supported/and/or/altered/ through/specific/therapeutic/interventi
ons/across/the/lifespan.
● CO/3:/Distinguish/risk/factors/associated/with/selected/disease/states/ across/the/li
fespan.
● CO/4:/Integrate/advanced/pathophysiological/concepts/in/the/diagnosis/ and/treatme
nt/of/health/problems/in/selected/populations.
RecognizingDepression /
The/nurse/practitioner/(NP)/is/discussing/a/client’s/reason/for/seeking/care./ Which/client/
statements/should/the/NP/recognize/as/being/associated/with/ depression?/Select/all/tha
t/apply.
“I/feel/so/hopeless,/and/everyone/says/I/look/sad.”
“Lately,/I/cannot/seem/to/remember/anything/without/writing/it/down.”
“My/partner/is/frustrated/because/I/can’t/make/decisions/about/our/upcoming/ vacation.”
Downloaded/by/Benjamin/Luca/()
, lOMoARcPSD| 51648332
“I/have/so/much/more/energy/these/days.”
“Never/in/my/life/have/I/felt/so/worthless;/I/feel/guilty/about/everything.”
---------------
Symptoms/of/depression/can/include/difficulty/making/decisions,/feeling/ hopeless/and/sad,/a
nd/feeling/guilt/or/self-negativity.
Impaired/recent/and/immediate/memory/or/episodes/of/extreme/energy/are/ not/associated
/with/major/depressive/disorders.
------------------
TricyclicAntidepressants
/
The/nurse/practitioner/(NP)/prescribes/a/tricyclic/antidepressant/for/a/client/ with/newly/dia
gnosed/major/depressive/disorder/(MDD)./Which/statement/ should/the/NP/include/when/
providing/client/education?
“This/medication/will/take/2–
4/weeks/to/reach/a/therapeutic/blood/level.”/ “Most/clients/notice/a/change/in/their/mood/
within/36/hours/after/the/first/ dose.”
“Generally,/5–
7/days/are/needed/for/the/medication/to/start/working.”/ “Your/symptoms/should/improve/
over/the/next/3–4/months.”
-----------
It/takes/2/to/4/weeks/for/tricyclic/antidepressants/to/reach/a/therapeutic/blood/ level.
Within/36/hours/and/5/to/7/days/are/both/too/short/for/a/therapeutic/blood/level/ of/the/drug/to/be
/achieved./Improvement/in/depression/should/be// demonstrated/sooner/than/3/to/4/months.
---------------
Acetylcholineand Mood / /
Which/statement/best/explains/how/acetylcholine/impacts/mood?
Acetylcholine/regulates/neural/circuits/in/the/hippocampus/and/prefrontal/ cortex.
Acetylcholine/targets/both/serotonin/and/norepinephrine/systems./ Acetylcholine/contribu
tes/to/normal/muscle/contraction.
Acetylcholine/binds/to/receptors/on/the/presynaptic/neuron.
--------
Acetylcholine/is/involved/in/regulating/neural/circuits/associated/with/mood/and/ emotion,/parti
cularly/in/brain/regions/such/as/the/hippocampus/and/prefrontal/ cortex./Changes/in/acetylchol
ine/levels/or/receptor/function/in/these/areas/may/ impact/mood/regulation/and/contribute/to/de
pressive/symptoms.
Downloaded/by/Benjamin/Luca/()
, lOMoARcPSD| 51648332
Acetylcholine's/impact/on/muscle/contraction/is/not/related/to/its/impact/on/ mood./Acetylc
holine/binds/to/postsynaptic/(not/presynaptic)/neuron/ receptors./Acetylcholine/acts/on/tw
o/main/types/of/receptors:/muscarinic/ receptors/and/nicotinic/receptors.
-----
Normal Physiology of Serotonin and Norep
/ / / / /
inephrine
Serotonin/and/norepinephrine/are/chemical/messengers/that,/along/with/ dopamine/and/acety
lcholine,/play/a/crucial/role/in/communication/between/ nerve/cells/(neurons)/in/the/brain./Thes
e/neurotransmitters/are/involved/in/ various/physiological/processes/and/are/particularly/relev
ant/to/the/ understanding/of/depression./Click/each/section/below/to/learn/more/about/the/ nor
mal/physiology/of/neurotransmitters.
Serotonin
Synthesis/and/Release:/Serotonin/is/synthesized/in/the/neurons/from/the/ amino/acid/tryptop
han./Once/synthesized,/serotonin/is/stored/in/vesicles/within/ the/nerve/terminals.
Release/and/Reuptake:/When/a/nerve/impulse/reaches/the/end/of/a/neuron,/ serotonin/is/rele
ased/into/the/synapse/(the/gap/between/neurons)./After/ release,/some/of/the/serotonin/binds/t
o/receptors/on/the/postsynaptic/neuron,/ transmitting/the/signal./The/remaining/serotonin/is/ta
ken/back/up/into/the/ presynaptic/neuron/through/a/process/called/reuptake,/where/it/can/be/ re
cycled.
Receptors:/Serotonin/binds/to/specific/receptors/on/the/postsynaptic/neuron./ There/are/vario
us/subtypes/of/serotonin/receptors/(e.g.,/5-HT1,/5-
HT2),/and/ their/activation/can/have/different/effects/on/mood,/emotion,/and/other/ physiologic
al/functions.
Norepinephrine
Synthesis/and/Release:/Norepinephrine/is/synthesized/from/the/amino/acid/ tyrosine./Like/s
erotonin,/it/is/stored/in/vesicles/in/the/nerve/terminals.
Release/and/Reuptake:/Upon/a/nerve/impulse,/norepinephrine/is/released/ into/the/synap
se./It/then/binds/to/receptors/on/the/postsynaptic/neuron./The/ unbound/norepinephrine/is/a
lso/subject/to/reuptake/into/the/presynaptic/ neuron/for/recycling.
Receptors:/Norepinephrine/primarily/acts/on/adrenergic/receptors,/of/which/ there/are/alpha/
and/beta/subtypes./The/activation/of/these/receptors/can/have/ various/effects/on/mood,/alertn
ess,/and/other/physiological/responses.
Downloaded/by/Benjamin/Luca/()
Alterations in Neurobiological Functions
Comprehensive Review
Exam Study Guide
Focused on Key Concepts
, lOMoARcPSD| 51648332
Alterations in Neurobiological Functions
/ / /
DEPRESSION
Introduction to Depression/ /
Major/depressive/disorder/is/a/mood/disorder/characterized/by/depressive/ symptoms/that/last
/longer/than/2/weeks./Though/the/exact/cause/is/unknown,/ depression/can/be/influenced/by/g
enetic/and/environmental/factors./Stressful/ life/events,/such/as/giving/birth/or/experiencing/e
motional/trauma,/can/also/ impact/the/development/of/depression./Recent/research/has/tied/d
epression/to/ decreased/activity/of/the/prefrontal/cortex/(Buelt,/2023)./The/prefrontal/cortex/ co
ntrols/attention,/memory,/mood,/and/personality.
This/learning/module/focuses/on/disease/processes/associated/with/depression/ and/enables/
you/to/meet/the/following/course/outcomes:
● CO/1:/Analyze/pathophysiologic/mechanisms/associated/with/selected/ disease/st
ates/across/the/lifespan.
● CO/2:/Examine/the/way/in/which/homeostatic,/adaptive,/and/ compensatory/physiologic
al/mechanisms/can/be/supported/and/or/altered/ through/specific/therapeutic/interventi
ons/across/the/lifespan.
● CO/3:/Distinguish/risk/factors/associated/with/selected/disease/states/ across/the/li
fespan.
● CO/4:/Integrate/advanced/pathophysiological/concepts/in/the/diagnosis/ and/treatme
nt/of/health/problems/in/selected/populations.
RecognizingDepression /
The/nurse/practitioner/(NP)/is/discussing/a/client’s/reason/for/seeking/care./ Which/client/
statements/should/the/NP/recognize/as/being/associated/with/ depression?/Select/all/tha
t/apply.
“I/feel/so/hopeless,/and/everyone/says/I/look/sad.”
“Lately,/I/cannot/seem/to/remember/anything/without/writing/it/down.”
“My/partner/is/frustrated/because/I/can’t/make/decisions/about/our/upcoming/ vacation.”
Downloaded/by/Benjamin/Luca/()
, lOMoARcPSD| 51648332
“I/have/so/much/more/energy/these/days.”
“Never/in/my/life/have/I/felt/so/worthless;/I/feel/guilty/about/everything.”
---------------
Symptoms/of/depression/can/include/difficulty/making/decisions,/feeling/ hopeless/and/sad,/a
nd/feeling/guilt/or/self-negativity.
Impaired/recent/and/immediate/memory/or/episodes/of/extreme/energy/are/ not/associated
/with/major/depressive/disorders.
------------------
TricyclicAntidepressants
/
The/nurse/practitioner/(NP)/prescribes/a/tricyclic/antidepressant/for/a/client/ with/newly/dia
gnosed/major/depressive/disorder/(MDD)./Which/statement/ should/the/NP/include/when/
providing/client/education?
“This/medication/will/take/2–
4/weeks/to/reach/a/therapeutic/blood/level.”/ “Most/clients/notice/a/change/in/their/mood/
within/36/hours/after/the/first/ dose.”
“Generally,/5–
7/days/are/needed/for/the/medication/to/start/working.”/ “Your/symptoms/should/improve/
over/the/next/3–4/months.”
-----------
It/takes/2/to/4/weeks/for/tricyclic/antidepressants/to/reach/a/therapeutic/blood/ level.
Within/36/hours/and/5/to/7/days/are/both/too/short/for/a/therapeutic/blood/level/ of/the/drug/to/be
/achieved./Improvement/in/depression/should/be// demonstrated/sooner/than/3/to/4/months.
---------------
Acetylcholineand Mood / /
Which/statement/best/explains/how/acetylcholine/impacts/mood?
Acetylcholine/regulates/neural/circuits/in/the/hippocampus/and/prefrontal/ cortex.
Acetylcholine/targets/both/serotonin/and/norepinephrine/systems./ Acetylcholine/contribu
tes/to/normal/muscle/contraction.
Acetylcholine/binds/to/receptors/on/the/presynaptic/neuron.
--------
Acetylcholine/is/involved/in/regulating/neural/circuits/associated/with/mood/and/ emotion,/parti
cularly/in/brain/regions/such/as/the/hippocampus/and/prefrontal/ cortex./Changes/in/acetylchol
ine/levels/or/receptor/function/in/these/areas/may/ impact/mood/regulation/and/contribute/to/de
pressive/symptoms.
Downloaded/by/Benjamin/Luca/()
, lOMoARcPSD| 51648332
Acetylcholine's/impact/on/muscle/contraction/is/not/related/to/its/impact/on/ mood./Acetylc
holine/binds/to/postsynaptic/(not/presynaptic)/neuron/ receptors./Acetylcholine/acts/on/tw
o/main/types/of/receptors:/muscarinic/ receptors/and/nicotinic/receptors.
-----
Normal Physiology of Serotonin and Norep
/ / / / /
inephrine
Serotonin/and/norepinephrine/are/chemical/messengers/that,/along/with/ dopamine/and/acety
lcholine,/play/a/crucial/role/in/communication/between/ nerve/cells/(neurons)/in/the/brain./Thes
e/neurotransmitters/are/involved/in/ various/physiological/processes/and/are/particularly/relev
ant/to/the/ understanding/of/depression./Click/each/section/below/to/learn/more/about/the/ nor
mal/physiology/of/neurotransmitters.
Serotonin
Synthesis/and/Release:/Serotonin/is/synthesized/in/the/neurons/from/the/ amino/acid/tryptop
han./Once/synthesized,/serotonin/is/stored/in/vesicles/within/ the/nerve/terminals.
Release/and/Reuptake:/When/a/nerve/impulse/reaches/the/end/of/a/neuron,/ serotonin/is/rele
ased/into/the/synapse/(the/gap/between/neurons)./After/ release,/some/of/the/serotonin/binds/t
o/receptors/on/the/postsynaptic/neuron,/ transmitting/the/signal./The/remaining/serotonin/is/ta
ken/back/up/into/the/ presynaptic/neuron/through/a/process/called/reuptake,/where/it/can/be/ re
cycled.
Receptors:/Serotonin/binds/to/specific/receptors/on/the/postsynaptic/neuron./ There/are/vario
us/subtypes/of/serotonin/receptors/(e.g.,/5-HT1,/5-
HT2),/and/ their/activation/can/have/different/effects/on/mood,/emotion,/and/other/ physiologic
al/functions.
Norepinephrine
Synthesis/and/Release:/Norepinephrine/is/synthesized/from/the/amino/acid/ tyrosine./Like/s
erotonin,/it/is/stored/in/vesicles/in/the/nerve/terminals.
Release/and/Reuptake:/Upon/a/nerve/impulse,/norepinephrine/is/released/ into/the/synap
se./It/then/binds/to/receptors/on/the/postsynaptic/neuron./The/ unbound/norepinephrine/is/a
lso/subject/to/reuptake/into/the/presynaptic/ neuron/for/recycling.
Receptors:/Norepinephrine/primarily/acts/on/adrenergic/receptors,/of/which/ there/are/alpha/
and/beta/subtypes./The/activation/of/these/receptors/can/have/ various/effects/on/mood,/alertn
ess,/and/other/physiological/responses.
Downloaded/by/Benjamin/Luca/()
