Hey all,
I am a medical student from Singapore studying in Australia. I hope to have some pals joining me in discussing anatomy and other topics related to medicine.
Ok l'll start the ball rolling,
I have just recently dissected the anterior region of the left human thigh. I have located the sartorius muscle(I believe its the one running from the lateral from the anterior superior iliac spine to the lateral of the knee) and cut it proximally to reveal the adductor canal. The great saphenous vein runs medially to the pelvis. The inguinal ligament lie deep along the pubis area to the pubic tubercle.
The femoral triangle contains the femoral nerve(I had a difficult time identifying this cause i might have sliced it), artery and vein. The inguinal lymph nodes are located located next to the femoral vein medial to the pubis. The femoral triangle is made up the boundaries of the sartorius muscle, inguinal ligament and the adductor longus muscle.
The adductor canal envelops the femoral artery and vein and is lateral to the pelvis as compared to the adductor longus. After cutting the adductor longus running from the medial to lateral of the pelvis, reveals the adductor brevis. (The obturator nerve should be around here, but I can't seem to find it) Cutting the adductor brevis proximally reveals the magus and the adductor hiatus muscle, can now be seen.On the side of the femoral vein, medial to the pelvis, is the pectineus muscle and the other side next to the femoral nerves,lateral to the pelvis, is the iliopsoas muscle(I believe so).
The femoral artery branches into the deep femoral artery as it goes down the thigh. the deep femoral artery branches into the medial circumflex femoral artery and the lateral circumflex artery which is loacted deep under the muscle.The femoral vein, on the other hand branches into the great and small( I can't locate the small one) saphenous veins. The saphenous nerve courses with the great saphenous vein and branches into the sural nerve is is located at the posterior of the foot.
On the lateral region of the thigh from the pubis, is the vastus lateralis muscle, followed by the rectus femoris muscle(deep to this muscle is the vastus intermedius) then to the vastus medialis. All these muscle form the quadriceps. Medial to the pubis lies the gracilis muscle and inserts on the tibia.
On the lateral side of the femur is the greater trochanter and to the inferior and medial to it is the lesser trochanter. On the lateral base of the femur is the later epicondyle and on the inferior of it, is the lateralcondyle.On the medial of it starting from the superior of it, is the adductor tubercle, followed by the medial epicondyle, then the medial condyle. In the middle of it is the patella, where the femur attaches to the tibia. The connective tissue, tibial tuberosity is located around this region too.
Please correct me if I made any mistakes. Peace.
Different functions of the anterior thigh muscles:
Sartorius muscle- It assists in flexion, abduction and lateral rotation of hip, and flexion and medial rotation of the knee.
adductor magnus muscle -Its function is to serve as a powerful adductor(motion) of the thigh, along with being able to extend the thigh.
adductor longus muscle- It provides motion of the thigh.
pectineus muscle- It is one of the muscles primarily responsible for hip flexion. It also adducts and medially rotates the thigh.
illoopsoas muscle- It acts to flex the femur onto the lumbo-pelvic complex. It is considered to be one of the most important muscle in the running process.
Rectus Femoris- It is involved in hip flexion. The rectus femoris is considered a direct antagonist(acts in opposition to the specific movement) to the hamstrings. The hamstrings oppose the rectus femoris at the hip joint through extension and at the knee joint through flexion.
Vastus Medialis- It acts largely in a co-ordinated manner throughout the control of knee extension.
vastus lateralis- It is a powerful extensor of the knee joint. It is crucial in walking, running, jumping and squatting.
Taken from Wikipedia, the free encyclopedia