Jamboard questions Flashcards
What neurotransmitter can be excitatory and inhibitory?
Glycine
What is the modality for free nerve endings?
pain, heat, cold
Which layer of the neocortex contains only axon and dendrites?
Molecular layer
Which visualisation method would be used to see detailed neuron structure?
Golgi Stain
What are the homeostatic glial cells of the CNS?
Astrocytes
How do ogliodendrocytes myelinate cells?
Ogliocytoplasm wraps many times around the axon of cells in the CNS
How do Shwann cells myelinate axons?
insulates one axon with one myelin segment in PNS
Where are bipolar cells found?
Retina
How are neurons structurally classified?
Axon diameter, Axon length, number of neurites
What does the nernst equation calculate?
The membrane potential achieved if the membrane was only permeable to one ion
Where does an action potential originate from?
The spike initiation zone
What factors affect propagation speed?
Axon diameter, myelination, nodes of ranvier
What does the space constant calculate?
The distance travelled by current along an axon before dropping below a threshold
Why does saltatory conduction save energy?
Na+ only enters at nodes so less work for Na+/K+ pump
Electrical synapses are formed from what type of cellular junction?
Gap junctions
What neurotransmitter would be found in a dense core secretory granule?
Oxytocin
How is glycine synthesised?
Catalysis of serine
What is an allosteric drug?
bind to a receptor to change that receptor’s response to stimulus
An increase in which ion concentration in BECF may cause increased neuron firing?
K+
Where is CSF secreted from?
Choroid plexus
Increases in extracellular K+ increases what in astrocytes?
Glucose metabolism
describe how astrocytes act as a syncytium?
Gap junctions allow for redistribution of K+ ions to areas of low activity
Which functional imaging technique exploits glucose use?
PET
What does the endoderm in development become in an adult?
the lining of the viscera
