Synonyms
Latin: M. quadrizeps femoris english: quadriceps femoris english: quadriceps thigh muscle, quadriceps thigh extensor, thigh extensorThe quadriceps is the largest and most powerful muscle in our body. The muscle Quadriceps femoris is, as the name suggests, a muscle that is composed of four other muscles. Its physiological cross-section is over 180 cm2 and weighs about 2 kg.
It is divided into four independently originating muscles. All four muscles of the M. Quadriceps femoris are located on the so-called ventral side or the front of the thigh. It is made up of four muscles: The straight part of the quadriceps has in its physiological cross-section significantly more almost twitch fibers than the other three heads.
It is therefore responsible for fast movements, but is more prone to muscle fiber tears. M. Rectus femoris, M. Vastus medialis, M. Vastus lateralis and the M. Vastus intermedius. With a width of approx.
150 cm2 it is one of the strongest muscles in the human body. M. rectus femoris: It originates from the so-called anterior inferior iliac spine or the acetabular roof of the hip joint and is attached to the anterior bony process of the tibia (tibial tuberosity). M. vastus medialis: Originating from the so-called labium mediale of the linea aspera, a line on the back of the femur, it also attaches to this bone process.
M. vastus lateralis: This muscle originates from the lateral labium of the aspera line and has the same base as the other two muscles. M. vastus intermedius: Its origin is at the front of the tibia. It is also attached to the aforementioned bony process.
The nerve that “mediates” or innervates this function is the femoral nerve. This is a peripheral nerve from the pelvic nerve plexus (plexus lumbalis) and originates from the spinal cord segments L1-L4.
- Straight part (Musculus rectus femoris) marked in blue
- Inner thigh muscle (Musculus vastus medialis) marked in green
- Outer thigh muscle (Musculus vastus lateralis) marked yellow
- Middle thigh muscle (Musculus vastus intermedialis)
