neuro Flashcards
List the catecholominergic neurons.What is the precursor for the neurotransmitters? Where is there function?
Tyrosince is the amino acid that is the precursor for dopamine, norepinephreine and epinephrine or adrenaline. The neurons are found in the nervous system, that involves mood, attention and visceral function.
what are the characteristics of a small molecule transmitter?
- it is systheized in the axon terminal
- dervived from food nutrients
- relatively fast-acting
List some of the amino acids
- GLU=glutumate
- GABA=gama amino
- GLY=glycein
- H=hydrogen
List the Amines
- DA=dopamine
- NE=norepinephrine
- EP=epinorphine
- 5-HT=saratonine
Ach
actylocholine
how many groups are there based on chemical composition that classifies neurtransmitters?
there are 3.
- small molecule transmitters
- neuropeptides
- transmitter gases
What are the characteristics of neuropeptide transmitters? and give some examples
Characteristics:
made by translation of mRNA from DNA code that occurs in the soma.
also it synthesizes and transports pretty slow.
Examples:
endorphines(pain)
corticosteroids(stress)
oxytocin(mother and infant bonding)
List the characteristics of transmitter gases and give the types of gases.
characteristics:
sysnthesized in many parts of neuron
once it is synthesized it diffuses across membrane and becomes active.
Types:
nitric oxide (NO)
carbon monoxide(CO)
functions: activate the metabolic process in cells
Iontropic receptor
This receptor opens fully and allows ions to go through. when this occurs, it directly changes the electrical and chemical of the cytsol.
Metabotropic
This metabolism of proteins change shape to send a message to a Gprotein which moves to a secondary messengar.
What happens in the Cholinergic System
The type of neurotransmitter that is involved with this system is ACH. this system also deals with our motor system, normal walking behavior and memory. IF this system is messed up then Alzheimer’s disease can occur.
Explain the Dopaminergic system
The type of neurotransmitter that is associated with this system is dopamine. some of the functions are coordinating movement and this also inncorporates that reward and pleasure system. the disorders that are assoctiated with this system are Parkinsons( too little DA) and schizophrenia(too much DA).
Noradrenergic Syetem
The type of neurotransmitter that is associated with this system is norepinephrine. The functions of this system is learning, arousal, organizing movements and brain development. The disorders that can occur in this system is depression and mania.
Serotonergic system
The type of neurotransmitter that involves this system is serotonin. The functions are wakefulness, learning and the major disorders of this sytem is depression, OCD, schizophrenia sleep apnea and SIDS.
How is the brain organized?
In layers,nuclei and pathways.
Planes of section
pertain the human CNS
What side of the brain does Alziehmers and epilepsy begin on ?
Left side
Ipsilateral
structures that are on the same side.
contralateral
structures that are on opposite of each other
bilateral
structures further away from midline are bilateral.
is the pituitary gland mirrored in the brain?
no, not a mirror image
Midsagitual cut
from the head of the brain to the back
Horizontal
half of bran at the bottom and half at the top. “horizon”
coronal
half of brain in back and the rest in front.
Afferent
Toward the brain structure. (sensory motor info)
Efferent
away from brain structure(motor info)
The brain: Bones
skull