Rectus femoris muscle
| Rectus femoris muscle |
|---|
|
| Human thigh muscles from the front |
| origin |
| Iliac bone ( anterior inferior iliac spine and upper edge of the acetabulum ) |
| approach |
| Base of the kneecap , tibial tuberosity of the tibia |
| function |
| Extensor of the knee joint , flexor of the hip joint |
| Innervation |
| Femoral nerve |
| Spinal segments |
| L2-L4 |
The rectus femoris muscle ("straight muscle of the thigh") is one of the anterior muscles of the thigh . It is a head of the four-headed thigh muscle ( Musculus quadriceps femoris ). The kneecap ( patella ) is embedded as a sesamoid bone ( Os sesamoideum ) in the tendon of this muscle . Over the patellar ligament is tendon finally on the rough surface on the front of the tibia ( tibial tuberosity attached) and forms the extension of the muscle.
The rectus femoris muscle arises proximally with the anterior head ( caput rectum ) on the ventral side of the anterior lower iliac spine ( spina iliaca anterior inferior ). In addition, there is the caput reflexum , which is irregularly detectable and arises at the upper edge ( margin superior ) of the joint socket of the hip joint ( acetabulum ).
function
The straight muscle of the thigh stretches together with the other heads of the four-headed thigh muscle, whose tendons radiate into the common tendon, the knee joint ( articulatio genus ). Imbalances in these muscles, for example due to paralysis , exert transverse forces on the kneecap, which can lead to a habitual dislocation of the kneecap.
The straight muscle of the thigh also flexes the hip joint and helps lift the extended leg. However, he does not develop as much strength as he does when the knee is bent. In that case the muscle is more tense and works in the most efficient part of its stroke.
Rectus femoris muscle as a food
The rectus femoris muscle is one of the few muscles that represent an anatomically exact part of meat in domestic pigs , the nut . It is used either as a roast or smoked as a nut ham .
literature
- Franz-Viktor Salomon: muscle tissue. In: Anatomy for veterinary medicine. 2nd ext. Edition. Enke, Stuttgart 2008, ISBN 978-3-8304-1075-1 , pp. 147-234.