Please answer the following questions for numbers 24,25 and 26 please. If you ar
ID: 199643 • Letter: P
Question
Please answer the following questions for numbers 24,25 and 26 please. If you are not sure please write it next to the problem number. I am a little confused on these, I will rate good!
24. Initiation of the action potential usually occurs of the neuron. a. in the cell body b. on the dendrites c. at the synapse d. on the axon e. at the axon initial segment 25. Which of the following glial cells are found in the peripheral nervous system? a. Oligodendrocytes b. Schwann cells c. Astrocytes d. Both a and b e. Both a and c 26. Which of the following statements about glial cells is false? a. They summate synaptic inputs on dendrites to enhance or inhibit action potential initiat b. They increase the velocity of nerve-impulse propagation. c. They act as metabolic intermediaries between capillaries and neurons. d. They help supply metabolic substrates to neurons. e. They mediate immune responses in neurons.Explanation / Answer
24. e. at the axon initial segment.
Action potential begins at the axon hillock which is the initial segment of axon and last site of soma.
25. b. Schwann cells (PNS)
Oligodendrocytes and astrocytes ate present in CNS
26.a. false - they summate synaptic inputs on dendrites to enhance or inhibit action potential initiation.