Certified Surgical Technologist (CST) Practice Exam

The largest muscle of the upper calf is the:

1. Tibialis

2. Peroneus

3. Gastronemius

4. Quadriceps

The correct answer is: Gastronemius

The gastrocnemius is indeed the largest muscle of the upper calf. It plays a crucial role in the movement of the leg and foot. As a major component of the calf muscles, the gastrocnemius contributes significantly to actions such as walking, running, and jumping. It is a two-headed muscle located at the back of the lower leg and is responsible for plantar flexion of the foot at the ankle joint and flexion of the leg at the knee joint. This muscle's prominent size and position allow it to generate significant power, especially during athletic activities. The gastrocnemius also works in conjunction with the soleus muscle, which is deeper and also contributes to the overall function of the calf. Understanding the anatomy and function of these muscles is essential for surgical technologists, particularly when assisting in procedures related to the lower limbs or when managing conditions that affect the calf musculature.