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Questions and Answers
What is the main function of the iliopsoas muscle?
What is the main function of the iliopsoas muscle?
Which muscle is formed by the fusion of the iliacus and psoas major muscles?
Which muscle is formed by the fusion of the iliacus and psoas major muscles?
Where does the iliacus muscle originate from?
Where does the iliacus muscle originate from?
Which muscle is responsible for turning the thigh inward?
Which muscle is responsible for turning the thigh inward?
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In how many cases does the psoas minor muscle join the structure of the iliopsoas muscle?
In how many cases does the psoas minor muscle join the structure of the iliopsoas muscle?
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From which vertebrae does the psoas major muscle start?
From which vertebrae does the psoas major muscle start?
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Which muscle is the strongest and main flexor of the thigh?
Which muscle is the strongest and main flexor of the thigh?
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What is the nerve source for the psoas major muscle?
What is the nerve source for the psoas major muscle?
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Which muscle is sometimes absent and is a small muscle when present?
Which muscle is sometimes absent and is a small muscle when present?
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What is the only muscle that inserts into the lesser trochanter?
What is the only muscle that inserts into the lesser trochanter?
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Which muscle is the only adductor muscle that crosses the knee joint?
Which muscle is the only adductor muscle that crosses the knee joint?
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Which muscle attaches to the gluteal tuberosity, 2/3 of the linea aspera, medial supracondylar line, and adductor tubercle?
Which muscle attaches to the gluteal tuberosity, 2/3 of the linea aspera, medial supracondylar line, and adductor tubercle?
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Which muscle starts from the anterior face of the pubis and adheres to the middle 1/3 of the linea aspera?
Which muscle starts from the anterior face of the pubis and adheres to the middle 1/3 of the linea aspera?
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Which muscle of the hamstring group starts from the tuber ischiadicum and attaches to the upper part of the inner side of the tibia to form the pes anserinus?
Which muscle of the hamstring group starts from the tuber ischiadicum and attaches to the upper part of the inner side of the tibia to form the pes anserinus?
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Which muscle of the hamstring group is located deep in the inner part of the thigh and ends at the inner condyle of the tibia?
Which muscle of the hamstring group is located deep in the inner part of the thigh and ends at the inner condyle of the tibia?
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Which muscle of the hamstring group causes external rotation of the leg?
Which muscle of the hamstring group causes external rotation of the leg?
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Which nerve innervates the muscles of the posterior group of the thigh, except for the short head of the biceps femoris?
Which nerve innervates the muscles of the posterior group of the thigh, except for the short head of the biceps femoris?
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Which muscle of the adductor group starts from the shaft and ramus inferior of the pubis and adheres to the upper 1/3 of the linea pectinea and linea aspera?
Which muscle of the adductor group starts from the shaft and ramus inferior of the pubis and adheres to the upper 1/3 of the linea pectinea and linea aspera?
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Which muscle of the adductor group starts from the body and ramus inferior of the pubis and attaches to the upper part of the inner surface of the tibia, the pes anserinus?
Which muscle of the adductor group starts from the body and ramus inferior of the pubis and attaches to the upper part of the inner surface of the tibia, the pes anserinus?
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Which muscle is not considered part of the hamstring group despite being located on the posterior-external part of the thigh?
Which muscle is not considered part of the hamstring group despite being located on the posterior-external part of the thigh?
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Which muscle is the main extensor of the thigh?
Which muscle is the main extensor of the thigh?
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Which muscle is crucial for walking and can lead to a duck-like gait if paralyzed?
Which muscle is crucial for walking and can lead to a duck-like gait if paralyzed?
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Which muscle is named after the way tailors sit?
Which muscle is named after the way tailors sit?
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Which muscle covers the front and side of the femur, giving extension to the leg?
Which muscle covers the front and side of the femur, giving extension to the leg?
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Which muscle separates from the vastus intermedius and stretches the knee joint capsule in knee extension?
Which muscle separates from the vastus intermedius and stretches the knee joint capsule in knee extension?
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Which muscle contributes to thigh adduction and flexion and is located on the inner side of the psoas major?
Which muscle contributes to thigh adduction and flexion and is located on the inner side of the psoas major?
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Which muscle runs along the inner edge of the thigh and knee, contributing to adduction and flexion of the thigh?
Which muscle runs along the inner edge of the thigh and knee, contributing to adduction and flexion of the thigh?
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Which muscle aids in flexion, abduction, and internal rotation of the thigh by stretching the fascia latae?
Which muscle aids in flexion, abduction, and internal rotation of the thigh by stretching the fascia latae?
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Which muscle causes external rotation and fixes the hip joint, among the listed muscles?
Which muscle causes external rotation and fixes the hip joint, among the listed muscles?
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Which muscle contributes to thigh abduction and internal rotation, among the listed muscles?
Which muscle contributes to thigh abduction and internal rotation, among the listed muscles?
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Study Notes
Muscles of the Pelvis and Thigh Anatomy
- Gluteus maximus is the largest and thickest muscle in the human body, serving as the main extensor of the thigh and assisting in external rotation and leg extension.
- Gluteus medius is the strongest abductor muscle of the thigh, crucial for walking, and its paralysis can lead to a duck-like gait.
- Gluteus minimus functions similarly to the gluteus medius, contributing to thigh abduction and internal rotation.
- Tensor fascia latae aids in flexion, abduction, and internal rotation of the thigh by stretching the fascia latae.
- The external rotator muscles of the thigh, including piriformis, gemellus, obturator internus, quadratus femoris, and obturator externus, cause external rotation and fix the hip joint.
- Fascia latae and linea aspera divide the thigh into anterior, medial, and posterior compartments.
- Sartorius, the longest muscle in the body, causes abduction, external rotation, and flexion of the thigh, and is named after the way tailors sit.
- Quadriceps femoris, comprising vastus lateralis, rectus femoris, vastus medialis, and vastus intermedius, covers the front and side of the femur, giving extension to the leg.
- Articularis genus, a small muscle separating from the vastus intermedius, stretches the knee joint capsule in knee extension.
- The adductor muscles on the medial side of the thigh, including pectineus, adductor brevis, adductor longus, adductor magnus, and gracilis, contribute to thigh adduction and flexion.
- Pectineus, located on the inner side of the psoas major, originates from the pecten ossis pubis and attaches to the linea pectinea in the femur, aiding in thigh adduction and flexion.
- Gracilis runs along the inner edge of the thigh and knee, contributing to adduction and flexion of the thigh.
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Description
Test your knowledge of the muscles of the pelvis and thigh with this anatomy quiz. Identify key muscles such as the gluteus maximus, medius, and minimus, as well as the quadriceps femoris and adductor muscles. Learn about their functions and how they contribute to movement and stability in the lower body.
