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In anatomy, the thigh is the area between the hip and the knee.Anatomically, it is part of the lower limb. [1]The single bone in the thigh is called the femur.This bone is very thick and strong (due to the high proportion of bone tissue), and forms a ball and socket joint at the hip, and a modified hinge joint at the knee.
Of the anterior thigh muscles the largest are the four muscles of the quadriceps femoris: the central rectus femoris, which is surrounded by the three vasti, the vastus intermedius, medialis, and lateralis. Rectus femoris is attached to the pelvis with two tendons, while the vasti are inserted to the femur.
The muscles of the posterior compartment of the thigh are the: [2] [3] biceps femoris muscle, which consists of a short head and a long head. semitendinosus muscle; semimembranosus muscle; These muscles (or their tendons) apart from the short head of the biceps femoris, are commonly known as the hamstrings.
The muscle which can 'cancel' or to some degree reverse the action of the muscle. Muscle synergies are noted in parentheses when relevant. O (Occurrences) Number of times that the named muscle row occurs in a standard human body. Here it may also be denoted when a given muscles only occurs in a male or a female body.
The adductor muscles that make up the groin consist of the adductor brevis, adductor longus, adductor magnus, gracilis, and pectineus. [4] These groin muscles adduct the thigh (bring the thigh and knee closer to the midline). The groin is innervated by branches of the lumbar plexus.
The gracilis muscle (/ ˈ ɡ r æ s ɪ l ɪ s /; Latin for "slender") is the most superficial muscle on the medial side of the thigh. It is thin and flattened, broad above, narrow and tapering below. It is thin and flattened, broad above, narrow and tapering below.
The fascia lata is the strong and deep fascia of the thigh that surrounds the thigh muscles and forms the outer limits of the compartments. Internally the muscle compartments are divided by the lateral and medial intermuscular septa. The three groups of muscles contained in the compartments have their own nerve supply: [1]
Description: A cross section of the thigh, vectorized and adapted from figure #432 from the 1918 Gray's anatomy. Date: 22 December 2010, 01:20 (UTC): Source