Module 1 HW questions Flashcards
Which CNS glia cell activates the immune system?
astrocytes
Which part of the BBB do astrocytes maintain and support?
tight junctions
What role do astrocytes play with released neurotransmitters?
recapture and recycle
What substance secreted by astrocytes stimulates neuron tissue maintenance and repair?
nerve growth factor
Which CNS glia cell is involved in removing debris?
microglia
Which PNS glia cell secretes nerve growth factor and remove damaged debris?
Schwann cell
What type of substance holds the layers of Schwann cells together?
myelin protein zero
Which part of a neuron contains the nucleus?
soma
Most neuronal synapses occur at the dendritic ______ of a receiving neuron
spine
Which part of the soma gives rise to the axon process?
axon hillock
What are neuron fibers that branch off of an axon with all the same properties and characteristics of the primary axon?
axon collaterals
What are the unmyelinated segments between Schwann cells on an axon where collaterals can branch?
Nodes of Ranvier
What are the slender unmyelinated distal end of an axon that form the synaptic bulbs?
telodendria
Which part of a neuron secretes neurotransmitters?
axon terminal
Which vesicle protein helps vesicles merge with the presynaptic membrane?
vSNAREs
What are isolated cytoplasmic stacks of RER inside a neuron soma?
Nissl bodies
Where are tSNAREs located?
presynaptic membrane
Which structure provides cytoskeletal transport pathways in a neuron?
neurotubules
Solutes/molecules tend to move passively across a cell membrane from _________ concentration to ________ concentration
high, low
Which type of receptor loops in and out of the membrane seven times and does not function to transport substances across the cell membrane directly?
G protein coupled receptor