The thymus gland is known as the 'throat sweetbread' or 'heart sweetbread' depending on the part of the thymus being considered. The thymus gland has two parts. The heart sweetbread is attached to the last rib and lies near the heart, although the name may refer to its shape as much as its location.
The overall result of regular cycling is a lean, fit body with notable stamina increases. The most obvious area of muscle building during bike rides is the lower body, more specifically the legs. Cyclists build the two main muscles located in the calf: soleus and gastrocnemius. The soleus helps to lift the heel and the gastrocnemius is the prominent part of the calf that allows riders to go.
The major muscles in the upper leg are the hamstrings and quadriceps. The hamstrings are three muscles at the back of the thigh that affect hip and knee movement. The quadricepsâthe strongest and leanest muscles in the bodyâare a four-muscle group at the front of the thigh that work to extend the knee and lower leg. The knee is a pivot-like hinge joint in the leg that connects the bones in the upper and lower leg. It is the largest joint in the human body.