Podcast
Questions and Answers
Which muscle in the anterior compartment of the thigh is responsible for flexing the hip?
Which muscle in the anterior compartment of the thigh is responsible for flexing the hip?
Which of the following muscles is not part of the quadriceps femoris?
Which of the following muscles is not part of the quadriceps femoris?
Which muscle in the anterior compartment of the thigh is responsible for both flexing the hip and extending the knee?
Which muscle in the anterior compartment of the thigh is responsible for both flexing the hip and extending the knee?
Which muscle in the anterior compartment of the thigh is the longest muscle in the human body?
Which muscle in the anterior compartment of the thigh is the longest muscle in the human body?
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Which muscle in the anterior compartment of the thigh is responsible for flexing the hip and medially rotating the thigh?
Which muscle in the anterior compartment of the thigh is responsible for flexing the hip and medially rotating the thigh?
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Which muscle in the anterior compartment of the thigh is responsible for both flexing the hip and extending the knee?
Which muscle in the anterior compartment of the thigh is responsible for both flexing the hip and extending the knee?
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Which nerve supplies the Psoas major muscle?
Which nerve supplies the Psoas major muscle?
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What is the action of the Iliacus muscle?
What is the action of the Iliacus muscle?
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What is the function of the Quadriceps muscle?
What is the function of the Quadriceps muscle?
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Where does the Rectus femoris muscle originate from?
Where does the Rectus femoris muscle originate from?
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Which area does the Vastus Lateralis muscle arise from?
Which area does the Vastus Lateralis muscle arise from?
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What is the insertion point of the Quadriceps tendon?
What is the insertion point of the Quadriceps tendon?
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Which muscle is a flexor and adductor of the hip joint?
Which muscle is a flexor and adductor of the hip joint?
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What is the nerve supply of the iliacus muscle?
What is the nerve supply of the iliacus muscle?
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Which of the following is the main and powerful flexor of the hip joint?
Which of the following is the main and powerful flexor of the hip joint?
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Which muscle is part of the quadriceps femoris group?
Which muscle is part of the quadriceps femoris group?
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What is the origin of the psoas major muscle?
What is the origin of the psoas major muscle?
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Which muscle is a flexor, abductor, and lateral rotator of the thigh, as well as a flexor and medial rotator of the leg at the knee joint?
Which muscle is a flexor, abductor, and lateral rotator of the thigh, as well as a flexor and medial rotator of the leg at the knee joint?
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Study Notes
Thigh Muscles
- Psoas major muscle: originates from 1-12th thoracic vertebral body, 2-transverse processes, bodies and intervertebral discs of all lumbar vertebrae, and 3- tendinous arches attached to sides of vertebral bodies, and inserts into lesser trochanter with iliacus muscle.
- Iliacus muscle: originates from upper 2/3 of iliac fossa, inserts into lesser trochanter with psoas major, and is supplied by the femoral nerve, acting as the main and powerful flexor of the hip joint.
Quadriceps Muscle
- Consists of four heads: Rectus femoris, Vastus lateralis, Vastus medialis, and Vastus intermedius.
- Origin:
- Rectus femoris: straight head from anterior inferior iliac spine, reflected head from depression above the acetabulum.
- Vastus lateralis: linear origin from lateral part of intertrochanteric line, root of greater trochanter, lateral margin of gluteal tuberosity, and lateral lip of linea aspera.
- Vastus medialis: linear origin from medial part of intertrochanteric line, spiral line, and medial lip of linea aspera.
- Vastus intermedius: originates from the front and lateral surfaces of upper two-thirds of the shaft of the femur.
- Insertion: forms quadriceps tendon, inserted into base, medial and lateral borders of patella, then prolonged into tibial tuberosity via ligamentum patellae.
- Nerve supply: femoral nerve.
- Action: extensor of the knee joint and flexor of the hip joint through rectus femoris.
Other Thigh Muscles
- Articularis genu: originates from the anterior surface of the lower part of the shaft of the femur, inserts into upper medial surface of the shaft of the tibia, and is supplied by the femoral nerve.
- Pectineus muscle: originates from pectineal surface of superior pubic ramus, inserts into upper half of line in back of femur (between lesser trochanter and linea aspera), and is supplied by a double nerve supply from the anterior division of the obturator nerve and femoral nerve.
- Sartorius muscle: originates from anterior superior iliac spine, inserts into upper part of medial surface of the tibia, and is supplied by the femoral nerve.
Compartments of Thigh
- Divided into three compartments by three intermuscular septa:
- Anterior compartment: contains quadriceps femoris, sartorius, pectineus, psoas major, and iliacus, and is supplied by the femoral nerve.
- Medial compartment: contains adductor longus, adductor brevis, adductor magnus (adductor part), gracilis, and pectineus, and is supplied by the obturator nerve.
- Posterior compartment: contains hamstrings and is supplied by the sciatic nerve.
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Description
Test your knowledge on the muscles and nerves of the lower limb, including the insertion points, nerve supplies, and actions associated with each muscle. Questions cover important details such as origins, actions, and innervations.
