Nervous System II Part 2 Flashcards
Histamine is commonly known for its ______ actions
Paracrine
ADHD causes lower glucose metabolism in areas of brain that control
Attention, movement
Cholinergic fibres release…
Ach
Amphetamines promote the release of?
Norepinephrine
Adrenergic fibres are found in the _____, and _______________
CNS; neuromuscular junction between nerves and smooth muscle in autonomic nervous system
Serotonin has ____ different receptor types
at least 16
Schizophrenia is linked to excess….?
Dopamine
Sleeping pills, anti-anxiety meds, and alcohol are all examples of ______ agonists
GABA
Two types of receptors for ACH
Nicotinic and muscarinic
Histamine is mostly located in the ______
Hypothalamus
Parkinson’s is treated by administration of dopamine precursor…?
L-dopa
Most common biogenic amines
Catecholamines
Serotonin has an _____ effect involved in muscle control
excitatory
Acetylcholine is synthesized from….
Acetyl CoA and choline
__________ neurons contain dopamine
Dopaminergic
Parkinson’s disease causes….?
Deficiency of dopamine in basal nuclei
___________ results in degeneration of cholinergic neurons
Alzheimer’s
Damage to ____ and _______ receptors are seen after stroke, brain trauma, hypoxic brain damage
glutamate and aspartate
Dopaminergic neurons re present in the _______
substantia nigra and VTA of midbrain
Drugs that bind to a receptor work in a similar action as NT are called?
Agonist
______ is the most CNS inhibitory NT
GABA
Agents that enhance GABA synaptic activity also ______ CNS activity
Depress
Ephinephrine binds to ___ and ____ receptors
Alpha; beta
Drugs that bind to a receptor and block NT are called?
Antagonists
Highest serotonin activity seen during _____
Alert wakefulness
Cell bodies for catecholamines lie in ________ and continue on to _______
Brain stem; branch extensively into all parts of brain and spinal cord
Long term effects of cocaine at neural adaptation level
Desensitization of receptors, down regulation of receptors, decreased dopamine production
Catecholamines play a major role in
States of consciousness, mood, motivation, directed attention
Major transmitter in CNS and PNS
ACH
Serotonin has important functions in regulation ______ and ________ mechanisms
Food intake and homeostatic mechanisms
ADHD is characterized by a decreased blood flow and activity in the ______ cortex of the _______ lobe
Prefrontal cortex of the frontal lobes
________ fibres contain norepinephrine
Adrenergic
Glutamate and aspartate and ______ a.a.’s
excitatory
Two major classes of adrenergic receptors
Alpha and beta
ADHD is a deficiency in ______
NE and DA
Biogenic Amines: synthesized from ____, and contain ______ group
Amino acids; amino group
Cholinergic system plays major role in _______, _______ and ______
Attention, learning, memory
Cocaine acts by… at synapse
Binds competitively with dopamine reuptake transporter