Final answer:
The false statements are a and c: the gastrocnemius, not just the soleus, is involved in plantar flexion, and the latissimus dorsi, not the trapezius, is the broadest muscle of the back. Thus, the answer is e. both A and C are false.
Step-by-step explanation:
The following statements are being evaluated for their accuracy:
- a. Plantar flexion at the ankle joint is accomplished by the soleus.
- b. Movements of the thigh are accomplished by muscles anchored to the pelvic girdle.
- c. The broadest muscle of the back is the trapezius.
- d. The internal oblique muscles are superficial to the transversus abdominis muscles.
Upon evaluation:
- Statement a is false because, while the soleus muscle does contribute to plantar flexion, it is not the only muscle involved. The gastrocnemius muscle also plays a significant role in this action.
- Statement c is false because the broadest muscle of the back is not the trapezius. It is actually the latissimus dorsi muscle.
Therefore, the correct answer is e. both A and C are false. Statement b is true because the muscles that move the thigh are indeed anchored to the pelvic girdle. Statement d is true as the internal oblique muscles are indeed superficial to the transversus abdominis muscles.