The main purpose of the gastrocnemius muscle is to facilitate leg movements, such as jumping, walking, running and knee bending. The gastrocnemius muscle pushes the leg down during these types activities. The location of this muscle is the back of the leg on the calf area.Continue Reading
The pushing action of the gastrocnemius muscle during walking causes a flexing motion of the leg at the ankle (plantar flexion) and knee joints (knee flexion).The gastrocnemius muscle also has two heads that give the muscle its diamond shape. These are the medial and the lateral heads.
Another important muscle in the calf area is the soleus muscle. These two muscles form the calf muscle, and both contribute to plantar flexion and knee flexion. Both these muscles taper and connect to the Achilles tendon that is at the bottom of the lower leg and above the heel area. In the human body, the Achilles tendon is the strongest tendon.
Many different types of injuries can involve the gastrocnemius muscle, including a torn muscle, inflammation of the muscle and a calf muscle rupture. The treatment option depends on the type of injury. For example, a complete rupture of the gastrocnemius muscle is a severe injury that requires between three to four months of recovery time and possible surgery.Learn more about Muscles
While both the pectoralis major and pectoralis minor muscles control the movements of the arm, the pectoralis major is specifically responsible for its lateral, vertical and rotational movement. In addition to this primary function, both pectoral muscles also aid in the action of deep breathing.Full Answer >
According to the BBC, antagonistic muscles are pairs of muscles that work by alternately contracting and relaxing. In the human leg, the quadriceps and hamstrings are one example of antagonistic muscles. As York College explains, skeletal muscles always work in groups and never work in isolation.Full Answer >
The musculature of the legs is composed of several muscle groups, explains Folsom Lake College. These include the gastrocnemius and soleus, located in the calf area; the gluteus, found in the buttocks; the quadriceps, located at the anterior thigh; and the hamstrings, found at the posterior of the thighs.Full Answer >
The hamstring is the main muscle that flexes the knee. The knee joint actually consists of two joints, the tibiofemoral joint and the patellofemoral joint, which work together to give a wide range of motion, including flexing, extending and rotating the knee.Full Answer >