Introduction: The transverse abdominis (TrA) muscle is the deepest of the six abdominal muscles. It extends between the ribs & the pelvis, wrapping around the trunk from front to back. The fibers of the muscle run horizontally, similar to a back support belt. In this way, along with providing postural support, the transverse abdominal muscle…
Introduction: The rectus abdominis muscle also termed as the “abdominal muscle” or simply “abs”, is a paired of straight muscle.There are 2 parallel muscles which is separated by a midline band of connective tissue called the linea alba. It extends from the pubic symphysis, pubic crest & pubic tubercle inferiorly, to the xiphoid process &…
Introduction: Biceps femoris is the long muscle of the posterior aspect of the thigh. Together with the semitendinosus & semimembranosus muscles, it makes the group of muscles commonly known as the hamstrings. Biceps femoris muscle runs from the ischial tuberosity, all the way to the proximal portion of the fibula. In doing so the muscle…
Introduction: Semitendinosus is a fusiform muscle of the posterior compartment of thigh. Along with semimembranosus & long head of biceps femoris it comprises a group known as the hamstring muscles with which it shares these 3 common features: They all attach between the ischial tuberosity of pelvis & bones of the leg. They cross both…
Introduction: The semimembranosus muscle is the most medial of the 3 hamstring muscles in the thigh. It is so called because it has a flat tendon of origin. It is located at posteromedially in the thigh, deep to the semitendinosus muscle. It extends the hip joint & flexes the knee joint. The other three muscles…
What are Hamstring muscles? How are the hamstring muscles structured? The three hamstring muscles are: Biceps femoris, closest to the outside of body. The function of this hamstring is to flex the knee, extend the thigh at hip and rotate lower leg from side-to-side when knee is bent. Semimembranosus, closest to the middle of body….
What is abdominal muscles? The abdominal muscles form the anterior & lateral abdominal wall & consist of the external abdominal obliques, the internal abdominal obliques, the rectus abdominis & the transversus abdominis. Acting together these muscles form a firm wall that protects the viscera & they help to maintain erect posture. In addition the contraction…
Introduction Tennis Leg refers to an acute medial head of the gastrocnemius muscle tear in the older athlete characterized by sudden onset of very severe calf pain and significant disability. The injury is invariably associated with extensive bruising & swelling, & can be mistaken for a deep venous thrombosis. The more common site is the…
Introduction The Plantaris muscle is a small muscle with a short belly and long slender tendon that is located at the back of the leg and along with the Gastrocnemius and Soleus muscles forms the Triceps Surae. The long, thin tendon of plantaris is nicknamed the freshman’s nerve. While not as thick as the Achilles…
Introduction The triceps surae muscle, made up of the muscles of the calf, is constructed by the soleus, the two-headed (medial & lateral) gastrocnemius, and the plantaris muscles. These muscles insert into the calcaneus, the bone of the heel of the foot, and form the vital part of the muscle of the posterior leg, commonly…
