Question

which number indicates a myelin sheath? * 1 point
figure: neuron anatomy
choose
which number indicates a terminal branch? * 1 point

Explanation:

For the first question (Myelin Sheath): In a neuron diagram, the myelin sheath is the insulating layer around the axon, often represented as the segmented or cylindrical structure around the axon. Looking at the labels, number 2 is associated with this structure (the myelin sheath, produced by Schwann cells in PNS neurons, appears as the wrapped layer around the axon).

For the second question (Terminal branch): Terminal branches are the fine, branching ends of the axon (or sometimes dendrites, but here for axon terminals). Number 1 is at the end of the branching structure, which are the terminal branches (axon terminals that connect to other neurons or targets).

Answer:

1. For "Which number indicates a Myelin Sheath?": 2 (the structure labeled 2 is the myelin sheath, the insulating layer around the axon).
2. For "Which number indicates a Terminal branch?": 1 (the structure labeled 1 is the terminal branch, the fine branching ends of the axon).