Question

which statement describes a reason to modify the model to more accurately represent the reflex pathway shown in figure 1?

a. the model does not accurately model the role of the muscular system.

b. the model shows the role of only one of the body systems involved in the reflex.

c. the leg in the model moves much more quickly than a real person’s leg.

d. the model does not completely model the path of the nerve signal through the nervous system.

Explanation:

Reflex pathways involve multiple body systems (nervous, muscular, skeletal, etc.). If a model shows only one system's role, it's incomplete, so modifying it to include others (like muscular, skeletal) would improve accuracy. Option A: Muscular system role might be modeled. Option C: Speed isn't a core reason for model accuracy. Option D: Nerve signal path in reflex (like reflex arc) is often modeled, but missing other systems is a bigger issue. So B is correct.

Answer:

B. The model shows the role of only one of the body systems involved in the reflex.