Question

nervous system worksheet

1. the diagram below is of a nerve cell or neuron. add the following labels to the diagram:

axon myelin sheath cell body dendrites muscle fibers axon terminals

1. color in the diagram as suggested below:

axon - purple axon terminals - orange myelin sheath - yellow
cell body - blue dendrites - green muscle fibers - red

Explanation:

The problem involves labeling and coloring a neuron diagram, which relates to the structure of nerve cells. This falls under Biology (a subfield of Natural Science) as it deals with the anatomy of neurons in the nervous system. The task requires identifying parts like dendrites, cell body, axon, myelin sheath, axon terminals, and muscle fibers, then applying the correct colors.

Answer:

1. Labeling the Neuron Diagram:

• Dendrites: The branched structures at the left (near the cell body) are dendrites.
• Cell body: The main part with the nucleus (the oval) is the cell body.
• Axon: The long, thin structure extending from the cell body (covered by myelin sheath in parts) is the axon.
• Myelin sheath: The segmented, oval - shaped structures around the axon are the myelin sheath (formed by oligodendrocytes or Schwann cells).
• Axon terminals: The branched structures at the right (near the muscle fibers) are axon terminals.
• Muscle fibers: The larger, striped structures at the right are muscle fibers.

1. Coloring the Neuron Diagram:

• Axon: Color the long, thin part (not the myelin - covered segments) purple.
• Axon Terminals: Color the branched ends (near muscle fibers) orange.
• Myelin sheath: Color the segmented, oval - shaped parts around the axon yellow.
• Cell body: Color the main part (with the nucleus) blue.
• Dendrites: Color the branched structures at the left (near cell body) green.
• Muscle fibers: Color the larger, striped structures at the right red.