The soleus muscle is very red in color. Which of these statements about soleus muscle fibers is FALSE?

-They are rich in myoglobin

-They have a slow twitch speed

-They are slow to fatigue

- They are large in diameter

Answer: The false one is they are large in diameter.

Explanation:

Soleus muscle fiber is a powerful plantar flexor of the ankle joint. It is located on the back of the lower leg and begin at the posterior part of the fibular head and the medial border of the tibia shaft, they have small diameter and the have ability to exert forces on to the angle joint which make them to have a slow twich speed. They are slow to fatigue and are rich in myoglobin.