Biochemie
Bio
Bio
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Flashcards
Ernährung und Mitochondrien
Zucker ist schlecht fuer mitochondrien da sie auf hochtouren laufen und somit freie O radikale bilden da viele elektronen die e transportkette umgehen und zum O kommen.
Bei ketogener ernaehrung laufen sie normal und vermehren sich sogar
Exitatory neuron
Pre synaptic Neuron that releases glutamate
Glutamate receptors
Receptors that recieve the exitatory signal.
Ionotropic (iGluR):
NMDA (N-methyl-D-Aspartat)
AMPA
Kainate
Metabotropic (mGluR):
Perisynaptic astrocytes
Astrocytes (type of glia cell) are beside the synapse and have transporters taking up NT thereby influencing synaptic transmission
BDNF
- Brain derived neurotrophic factor
- Bind TrkB (Tropomyosin receptor kinase B) (a RTK)
- funxtion: neuronal&synaptic growth, survival & differentiation
CO2 and bloodvessel tonus
CO2 is indirectly vasodilating via formation of acidic hydrogenbicarbonate which lowers ph which causes vasodilation
For local regulatuon of bloodflow. Tissue with more co2 gets more blood
Hyperventilation (to much breathing per necessity/exercise done) causes hypokapnie (little co2) and thereby respiratory alkalose (konstriktion, especialy in brain)
Hecheln causes hyperkapnie and thereby azidose
UV
A Penetrates deepest into skin but least dangerous (longest)
B causes cancer and skinburn
C penetrates least but most dangerous
Doesnt reach earth (shortest)
Some sunscreens and antibiotics (fluoroquinolone) are photosensitized carcinogens