Please answer the following questions for numbers 37,38 and 39. If you are not s
ID: 199654 • Letter: P
Question
Please answer the following questions for numbers 37,38 and 39. If you are not sure please write it next to the problem number. I am a little confused on these, I will rate good!
37. The glial cells responsible for myelinating central neurons are called a. Schwann cells b. Microglia c. Astrocytes d. oligodendrocytes 38. Which of the following statements about electrical synapses (gap junctions) is FALSE? a. They are composed of two hemichannels known as connexons b. They usually pass signals directionally (i.e. pre to post-synapse and post to pre-synapse) c. Each hemichannel is made up of 5 connexins d. Neurotransmission is almost instantaneous e. They allow cytoplasmic continuity between pre and post-synaptic cells 39. Which of the following would not occur at an electrical synapse? a. A depolarization in the presynaptic cell produces a hyperpolarization in the postsynaptic cell b. When the presynaptic neuron produces an action potential, the postsynaptic cell depolarizes almost instantaneously c. The two neurons appear to have synchronous action potentials d. Electron microscope images show synapses that appear to be zippered together e. lons flow through the synapseExplanation / Answer
37.answer is b. microglia
38.answer is e.It is because they does not allow cytoplasmic continuity.
39.It may be in between c or d.please confirm it well.