The two main muscle groups in the upper leg are the quadriceps which extend your leg and the hamstrings which contract the leg.
The biceps femoris, semitendinosus, and semimembranosus.
The Hamstring Group
quadraceps and hamstring.
Hamstring, biceps femoris, semitendinosus and semimembranosus
Biceps femoris, semitendinosus, and semimembranosus.
Abductor muscle - moves a limb away from the midlineAdductor muscle - moves a limb towards the midlineExtensor muscle - increase the angle at a joint - extends a limbFlexor muscle - decreases the angle at a joint - flexes a limbPronator muscle - turns a limb to face downwardsSupinator muscle - turns a limb to face upwardsRotator muscle - rotates a limbIn the human body, these are the responsible muscles.*Muscles which move the thigh and their action*Gluteus maximus - Extends and rotates thigh laterally.Adductor longus - Adducts, medially rotates and flexes the thighAdductor brevis - Adducts, laterally rotates and flexes the thighAdductor magnus - Adducts, flexes, laterally rotates and extends the thigh.Rectus femoris - Extends knee and flexes hipVastus lateralis - Extends kneeVastus medialis - Extends kneeVastus intermedius - Extends kneeSartorius - Flexes knee. Flexes hip and rotates femur laterallyBiceps femoris - Flexes leg and extends thighSemitendinosus - Flexes leg and extends thighSemimembranosus - Flexes leg and extends thigh
Semitendinosus.
Flexing the thigh, extending the leg, adducts leg
Rectus Femoris is a quadricep muscle located in the anterior thigh, on top of the vastus intermedius (another quadricep). All of the quadriceps insert to the patella, and the tibial tuberosity via the patellar ligament. Together they are responsible for extension of the knee. Rectus Femoris is the only quadricep that also crosses the hip joint (acetabulofemoral joint) and attaches to the AIIS (anterior inferior iliac spine). Because of this, Rectus Femoris also assists in flexion of the hip.
The sartorius muscle is primarily responsible for crossing one leg over the other while sitting. This long, thin muscle runs from the outer hip to the inner knee and is involved in flexing and rotating the hip and knee joints.
The iliolumbar ligament has been described as the most important ligament for restraining movement at the lumbosacral junction. In addition, it may play an important role in restraining movement in the sacroiliac joints. The Sartorius muscle is a long thin muscle that runs down the length of the thigh. It is the longest muscle in the human body. Its upper portion forms the lateral border of the femoral triangle. Its origin extends from the anterior superior spine of the ilium, with insertion into the medial border of the tuberosity of the tibia, with nerve supply from the femoral nerve, and whose action flexes the thigh and leg and rotates the leg medially and the thigh laterally. Also called tailor's muscle.
The upper part of the leg is called the thigh. It extends from the hip to the knee and contains large muscles such as the quadriceps and hamstrings.
thigh
The quadriceps femoris muscle group flexes the thigh at the hip, extends the leg (i.e. straightens the knee), and adducts the leg. The quadriceps are located at the anterior thigh. It is a muscle that reacts with hamstrings and gastrocnemius. The four muscles in this group are the rectus femoris, vastus medius, vatus lateralis, and the vastus intermedius.
The animal with a second thigh called a gaskin is a horse. The gaskin is the part of the hind leg in a horse that extends from above the hock to the stifle joint. It is an important muscle group for the horse's movement and strength.
Several muscles work together to extend the thigh. the psoas major flexes and rotates the thigh medially, as does the iliacus. The gluteus maximus extends and rotates the thight laterally. In addition, the adductor longus, adductor brevis, and adductor magnus help rotate, flex, and move the thigh.
The gastronemius muscle is one of the calf muscles and it plantar flexes the foot or flexes the knee.