Anatomy Muscle Posterior Leg

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Muscle Anatomy Quizzes & Trivia

Posterior leg muscles


Questions and Answers
  • 1. 

    What is the actions of semitedinosus?

    • A.

      Extends hip flexes knee medially rotates tibia

    • B.

      Flexes hip extends knee laterally rotates tibia

    • C.

      Extends hip flexes knee medially rotates fibula

    • D.

      Extends knee flexes hip

    Correct Answer
    A. Extends hip flexes knee medially rotates tibia
    Explanation
    The semitendinosus muscle is responsible for extending the hip, flexing the knee, and medially rotating the tibia. This means that it helps to move the leg backward at the hip joint, bend the knee, and rotate the lower leg inward.

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  • 2. 

    What is the origin of semimembranosus?

    • A.

      Ischial tuberosity

    • B.

      Medial tibial condyle

    • C.

      Femur

    • D.

      Greater trochanter

    Correct Answer
    A. Ischial tuberosity
    Explanation
    The semimembranosus muscle originates from the ischial tuberosity. This is a bony prominence located at the base of the pelvis, specifically the posterior aspect of the hip bone. The muscle then extends down the back of the thigh and attaches to the medial tibial condyle, which is a bony prominence on the inner side of the top of the tibia bone. The femur, which is the thigh bone, and the greater trochanter, which is a bony prominence on the upper part of the femur, are not the origin points of the semimembranosus muscle.

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  • 3. 

    What is the insertion of biceps femoris?

    • A.

      Ischial tuberosity

    • B.

      Tibia

    • C.

      Head of fibula

    • D.

      Intertrochanteric crest of femur

    Correct Answer
    C. Head of fibula
    Explanation
    The insertion of the biceps femoris is the head of the fibula. The biceps femoris is a muscle located in the back of the thigh. It originates from the ischial tuberosity, which is not the insertion point. The tibia and intertrochanteric crest of the femur are also not the correct insertion points for the biceps femoris. Therefore, the head of the fibula is the correct answer.

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  • 4. 

    What are the adductor group origin?

    • A.

      Pubis ischium

    • B.

      Linea aspera magnus adductor tubercle

    • C.

      Head of fibula

    • D.

      Femur

    Correct Answer
    A. Pubis ischium
    Explanation
    The adductor group originates from the pubis and ischium bones.

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  • 5. 

    What are the actions of gracillis

    • A.

      Adducts thigh extends knee medially rotates tibia

    • B.

      Abducts thigh flexes knee medially rotates fibula

    • C.

      Adducts thigh flexes knee medially rotates tibia

    • D.

      Laterally rotates tibia adducts thigh flexes knee

    Correct Answer
    C. Adducts thigh flexes knee medially rotates tibia
    Explanation
    The correct answer is "adducts thigh flexes knee medially rotates tibia." The gracilis muscle is responsible for adducting the thigh, which means bringing the thigh towards the midline of the body. It also flexes the knee joint, which means bending the knee. Additionally, it medially rotates the tibia, which means turning the shin bone inward.

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  • 6. 

    What are the origin of sartorius?

    • A.

      Anterior inferior iliac spine

    • B.

      Medial spine of tibial tuberosity

    • C.

      Anterior superior iliac spine

    • D.

      Ischial tuberosity

    Correct Answer
    C. Anterior superior iliac spine
    Explanation
    The origin of the sartorius muscle is the anterior superior iliac spine. This is a bony projection located on the front of the iliac bone, which is part of the pelvis. The sartorius muscle is a long, strap-like muscle that runs down the front of the thigh. It helps to flex and rotate the hip joint, as well as flex the knee joint. Its origin at the anterior superior iliac spine allows it to have a strong attachment point and generate the necessary force for these movements.

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  • 7. 

    Which muscle is the longest in the body

    • A.

      Gastrocnemius

    • B.

      Rectus femoris

    • C.

      Gluteus maximus

    • D.

      Sartorius

    Correct Answer
    D. Sartorius
    Explanation
    The sartorius muscle is the longest muscle in the body. It is a long, thin muscle that runs diagonally across the thigh. Its primary function is to flex and rotate the hip and knee joints. It is also involved in crossing the legs in a seated position, hence its name "sartorius" which means "tailor" in Latin. The other muscles listed, such as the gastrocnemius, rectus femoris, and gluteus maximus, are not as long as the sartorius.

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  • 8. 

    What are NOT the action of Sartorius

    • A.

      Extends hip

    • B.

      Flexes knee

    • C.

      Flexes hip

    • D.

      Laterally rotates thigh and medially rotates knee

    Correct Answer
    A. Extends hip
    Explanation
    The actions of Sartorius do not include extending the hip. Sartorius is a muscle located in the thigh that flexes the hip, flexes the knee, and laterally rotates the thigh and medially rotates the knee. However, it does not play a role in extending the hip joint.

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  • 9. 

    What are the insertion of the sartorius?

    • A.

      Medial spine of tibial tuberosity and contributes to pes anserine

    • B.

      Anterior superior iliac spine

    • C.

      Tibial tuberosity via patellar ligament

    • D.

      Synovial membrane

    Correct Answer
    A. Medial spine of tibial tuberosity and contributes to pes anserine
    Explanation
    The correct answer is the insertion of the sartorius is the medial spine of the tibial tuberosity and it contributes to the pes anserine. The sartorius muscle is a long, thin muscle that runs down the length of the thigh. It originates from the anterior superior iliac spine and crosses the hip joint. It then travels down the thigh and inserts into the medial spine of the tibial tuberosity. The pes anserine is a tendinous insertion located on the medial side of the tibia, just below the tibial tuberosity. The sartorius muscle contributes to this insertion, along with the gracilis and semitendinosus muscles.

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  • 10. 

    What is the origin of rectus femoris?

    • A.

      Anterior superior iliac spine

    • B.

      Tibial tuberosity via patellar ligament

    • C.

      Greater trochanter

    • D.

      Anterior superior iliac spine

    Correct Answer
    D. Anterior superior iliac spine
    Explanation
    The rectus femoris muscle originates from the anterior superior iliac spine.

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  • 11. 

    What is the actions for rectus femoris?

    • A.

      Extends hip flexes knee

    • B.

      Laterally rotates hip and knee

    • C.

      Extends knee flexes hip

    • D.

      Adducts thigh

    Correct Answer
    C. Extends knee flexes hip
    Explanation
    The actions of the rectus femoris muscle are to extend the knee and flex the hip. This means that when the rectus femoris contracts, it helps straighten the knee joint and also brings the thigh closer to the abdomen by flexing the hip joint.

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  • 12. 

    What is insertion of rectus femoris

    • A.

      Anterior inferior iliac spine

    • B.

      Tibial tuberosity via patellar ligament

    • C.

      Linea aspera

    • D.

      Pes anserine

    Correct Answer
    B. Tibial tuberosity via patellar ligament
    Explanation
    The insertion of the rectus femoris muscle is at the tibial tuberosity via the patellar ligament. This means that the muscle attaches to the bony prominence on the front of the tibia (shinbone) through a strong band of tissue called the patellar ligament. This attachment allows the rectus femoris muscle to exert its action on the lower leg, specifically in extending the knee joint.

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  • 13. 

    What is the origin of vastus lateralis?

    • A.

      Greater trochanter medial lip of linea aspera

    • B.

      Lesser trochanter lateral lip of linea aspera

    • C.

      Greater trochanter lateral lip of linea aspera

    • D.

      Body of femur

    Correct Answer
    C. Greater trochanter lateral lip of linea aspera
    Explanation
    The vastus lateralis muscle originates from the greater trochanter and the lateral lip of the linea aspera.

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  • 14. 

    What is the action of vastus lataralis vastus intermedius vastus medialis 

    • A.

      Extends knee

    • B.

      Flexes knee

    • C.

      Flexes thigh

    • D.

      Extends thigh

    Correct Answer
    A. Extends knee
    Explanation
    The vastus lateralis, vastus intermedius, and vastus medialis are all muscles located in the thigh. These muscles work together as part of the quadriceps muscle group to extend the knee joint. When these muscles contract, they help to straighten the leg by pulling on the patellar tendon, which in turn extends the knee. Therefore, the correct answer is "extends knee."

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  • 15. 

    What is the insertion of vastus lataralis vastus intermedius vastus medialis

    • A.

      Tibial tuberosity via patellar ligament

    • B.

      Body of femur

    • C.

      Greater trochanter

    • D.

      Pes anserine

    Correct Answer
    A. Tibial tuberosity via patellar ligament
    Explanation
    The insertion of the vastus lateralis, vastus intermedius, and vastus medialis muscles is the tibial tuberosity via the patellar ligament. These muscles are part of the quadriceps muscle group and are responsible for extending the knee joint. The tibial tuberosity is a bony prominence located on the front of the tibia (shinbone), and the patellar ligament connects the patella (kneecap) to the tibial tuberosity. When the quadriceps muscles contract, they pull on the patellar ligament, causing the knee to straighten and extend.

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  • 16. 

    What is the origin of vastus intermedius

    • A.

      Tibia

    • B.

      Fibula

    • C.

      Body of femur

    • D.

      Linea aspera

    Correct Answer
    C. Body of femur
    Explanation
    The vastus intermedius muscle originates from the body of the femur. This muscle is one of the four quadriceps muscles located in the anterior thigh. It plays a crucial role in extending the knee joint and is involved in activities such as walking, running, and jumping. The origin of a muscle refers to the point where it begins or attaches to a bone, and in this case, the vastus intermedius originates from the body of the femur bone.

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  • 17. 

    What is the origin of vastus medialis

    • A.

      Intertrochanteric line of femus linea aspera

    • B.

      Body of femur

    • C.

      Distal portion of anterior femoral surface

    • D.

      Synovial membrane of knee joint

    Correct Answer
    A. Intertrochanteric line of femus linea aspera
    Explanation
    The origin of vastus medialis is the intertrochanteric line of the femur and the linea aspera. This means that the muscle attaches to these specific areas on the femur.

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  • 18. 

    What is the origin for articularis genu

    • A.

      Suprapatellar bursa

    • B.

      Patella

    • C.

      Distal portion of anterior femoral surface close to knee

    • D.

      Femur

    Correct Answer
    C. Distal portion of anterior femoral surface close to knee
    Explanation
    The origin for articularis genu is the distal portion of the anterior femoral surface close to the knee. This muscle is responsible for retracting the suprapatellar bursa during knee extension, allowing the patella to move freely.

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  • 19. 

    What is the actions of articularis genu

    • A.

      Pulls suprapatellar bursa, prevents impingement of suprapatellar bursa

    • B.

      Extends knee

    • C.

      Bends knee

    • D.

      Flexes thigh

    Correct Answer
    A. Pulls suprapatellar bursa, prevents impingement of suprapatellar bursa
    Explanation
    The actions of articularis genu include pulling the suprapatellar bursa and preventing impingement of the suprapatellar bursa. This muscle helps to maintain the proper position of the bursa, preventing it from getting trapped or compressed. It does not directly extend or bend the knee, nor does it flex the thigh.

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  • 20. 

    What are the insertion of articularis genu

    • A.

      Synovial membrane of knee joint

    • B.

      Linea aspera

    • C.

      Femur

    • D.

      Ischial tuberosity

    Correct Answer
    A. Synovial membrane of knee joint
    Explanation
    The insertion of articularis genu is the synovial membrane of the knee joint. The synovial membrane is a thin layer of connective tissue that lines the inner surface of the joint capsule and produces synovial fluid, which lubricates and nourishes the joint. The articularis genu muscle is a small muscle located in the anterior thigh that helps to tense the knee joint and pull the suprapatellar bursa superiorly during extension of the knee.

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  • 21. 

    What is the origin of psoas major

    • A.

      Bodies T10-L4

    • B.

      Coccyx

    • C.

      Bodies T12-L5

    • D.

      Iliac fossa

    Correct Answer
    C. Bodies T12-L5
    Explanation
    The correct answer is "bodies T12-L5." The psoas major muscle originates from the bodies of the 12th thoracic vertebra (T12) to the 5th lumbar vertebra (L5). This muscle is located in the lower back and plays a significant role in hip flexion and stabilization of the lumbar spine.

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  • 22. 

    What is the action of psoas major iliacus

    • A.

      Hip extension

    • B.

      Hip adductor

    • C.

      Hip rotator

    • D.

      Hip flexion

    Correct Answer
    D. Hip flexion
    Explanation
    The action of the psoas major iliacus is hip flexion. This means that when these muscles contract, they help to bring the thigh towards the abdomen, bending the hip joint. Hip extension refers to moving the thigh away from the abdomen, hip adduction refers to moving the thigh towards the midline of the body, and hip rotation refers to rotating the thigh either internally or externally. None of these actions accurately describe the action of the psoas major iliacus.

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  • 23. 

    What is NOT the insertion of psoas major and iliacus

    • A.

      Lesser trochanter of femur

    • B.

      Pectineal line of femur

    Correct Answer
    B. Pectineal line of femur
    Explanation
    The psoas major and iliacus muscles are both hip flexors that originate from the lumbar spine and pelvis and insert onto the femur. The psoas major inserts onto the lesser trochanter of the femur, while the iliacus inserts onto the pectineal line of the femur. Therefore, the correct answer is the pectineal line of the femur, as it is not the insertion point for the psoas major and iliacus muscles.

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  • 24. 

    What is the origin of iliacus

    • A.

      Iliac spine

    • B.

      Greater trochanter

    • C.

      Iliac fossa

    • D.

      Thoracolumbar fascia

    Correct Answer
    C. Iliac fossa
    Explanation
    The origin of the iliacus muscle is the iliac fossa. The iliac fossa is a concave surface on the inner aspect of the ilium bone, which is located in the pelvic region. The iliacus muscle originates from this fossa and then travels down to insert onto the lesser trochanter of the femur bone. This muscle is involved in flexing and stabilizing the hip joint.

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  • 25. 

    What is the origin of pectineus

    • A.

      External surface ribs 5-12

    • B.

      Symphysis pubis

    • C.

      Ischial tuberosity

    • D.

      Pubis crest

    Correct Answer
    D. Pubis crest
    Explanation
    The pectineus muscle originates from the pubis crest.

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  • 26. 

    What is the actions of pectineus

    • A.

      Extends hip abducts thigh

    • B.

      Flexes hip laterally rotates thigh

    • C.

      Flexes hip adducts thigh

    • D.

      Extends and adducts hip

    Correct Answer
    C. Flexes hip adducts thigh
    Explanation
    The pectineus muscle is responsible for flexing the hip and adducting the thigh. Flexion of the hip refers to bringing the thigh towards the abdomen, while adduction of the thigh refers to moving the thigh towards the midline of the body. Therefore, the correct answer is "flexes hip adducts thigh."

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  • 27. 

    What is the insertion of pectineus

    • A.

      Pectineal line of femur

    • B.

      Ischial tuberosity

    • C.

      Iliac fossa

    • D.

      Pes anserine

    Correct Answer
    A. Pectineal line of femur
    Explanation
    The pectineus muscle originates from the pectineal line of the femur. This line is a ridge on the anterior surface of the femur bone. The muscle inserts onto the pectineal line, allowing it to flex and adduct the thigh at the hip joint. Therefore, the pectineal line of the femur is the correct insertion point for the pectineus muscle.

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  • 28. 

    What is the origin of semitendinosus

    • A.

      Pes anserine

    • B.

      Ischial tuberosity

    • C.

      Femur

    • D.

      Pubis

    Correct Answer
    B. Ischial tuberosity
    Explanation
    The origin of the semitendinosus muscle is the ischial tuberosity. The ischial tuberosity is a bony prominence located at the base of the pelvis. The semitendinosus muscle is one of the hamstring muscles and is responsible for flexing the knee and extending the hip joint. Its origin at the ischial tuberosity allows it to generate the necessary force for these movements.

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  • 29. 

    What is the insertion of semitendinosus

    • A.

      Contributes to pes anserine (gooses foot)

    • B.

      Medial tibial condyle

    • C.

      Head of fibula

    • D.

      Magnus

    Correct Answer
    A. Contributes to pes anserine (gooses foot)
    Explanation
    The insertion of semitendinosus muscle is at the pes anserine, also known as the gooses foot. The pes anserine is a common insertion point for three muscles, including semitendinosus, gracilis, and sartorius. These muscles attach to the medial tibial condyle, which is the bony prominence on the inner side of the tibia bone. The head of the fibula, on the other hand, is not related to the insertion of semitendinosus muscle. Magnus is not a relevant term in this context.

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  • 30. 

    Which of the following are NOT action of semimembranosus

    • A.

      Flexes knee

    • B.

      Laterally rotates thigh

    • C.

      Medially rotates hip

    • D.

      Extends hip

    Correct Answer
    B. Laterally rotates thigh
    Explanation
    The semimembranosus muscle is not responsible for laterally rotating the thigh. It is a muscle located in the back of the thigh that primarily functions to flex the knee, medially rotate the hip, and extend the hip. Lateral rotation of the thigh is mainly performed by other muscles such as the piriformis and the external rotators of the hip.

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  • 31. 

    What is the insertion of semimembranosus

    • A.

      Lateral tibial condyle

    • B.

      Contributes to pes anserine

    • C.

      Medial tibial condyle

    • D.

      Femur

    Correct Answer
    C. Medial tibial condyle
    Explanation
    The insertion of the semimembranosus muscle is the medial tibial condyle. This means that the muscle attaches to and inserts into the medial (inner) side of the tibial condyle. The semimembranosus muscle is one of the muscles that make up the pes anserine, a tendinous insertion on the medial side of the tibia. It originates from the ischial tuberosity of the femur and crosses both the hip and knee joints.

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  • 32. 

    What is the long head origin of biceps femoris

    • A.

      Femur

    • B.

      Ischial tuberosity

    • C.

      Head of fibula

    • D.

      Tibia

    Correct Answer
    B. Ischial tuberosity
    Explanation
    The long head origin of the biceps femoris is the ischial tuberosity. The ischial tuberosity is a bony prominence located at the base of the pelvis, specifically the posterior part of the hip bone. This is where the long head of the biceps femoris muscle originates, making it the correct answer. The other options, such as the femur, head of fibula, and tibia, are not the origins of the long head of the biceps femoris muscle.

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  • 33. 

    What is the main action of semimembranosus

    • A.

      Extends knee

    • B.

      Rotates knee

    • C.

      Unlocks knee

    • D.

      Flexor at knee

    Correct Answer
    D. Flexor at knee
    Explanation
    The main action of the semimembranosus muscle is to flex the knee. This means that it helps to bend the knee joint, bringing the lower leg closer to the thigh. The semimembranosus muscle is one of the three hamstring muscles located at the back of the thigh, and it plays a crucial role in activities such as walking, running, and jumping by facilitating knee flexion.

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  • 34. 

    What are the actions of the adductor group

    • A.

      Adducts thigh flexes thigh laterally rotates thigh at hip

    • B.

      Adducts hip flexes hip laterally rotates thigh at hip

    • C.

      Adducts thigh flexes hip medially rotates thigh

    • D.

      Adducts thigh flexes hip medially rotates hip

    Correct Answer
    A. Adducts thigh flexes thigh laterally rotates thigh at hip
    Explanation
    The adductor group refers to a group of muscles that are responsible for bringing the thigh towards the midline of the body, which is known as adduction. These muscles also have the ability to flex the thigh, which means to bring it closer to the trunk. Additionally, they can laterally rotate the thigh at the hip joint, which involves rotating the thigh away from the midline of the body. Therefore, the correct answer is "adducts thigh flexes thigh laterally rotates thigh at hip."

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  • 35. 

    What are NOT insertions of adductor group

    • A.

      Linea aspera

    • B.

      Magnus

    • C.

      Adductor tubercle

    • D.

      Pubis

    Correct Answer
    D. Pubis
    Explanation
    The adductor group consists of muscles that are responsible for adduction, or bringing the limbs closer to the midline of the body. The linea aspera is a ridge on the femur bone where some of these muscles attach. The adductor magnus is one of the main muscles in the adductor group. The adductor tubercle is a bony prominence on the femur where the adductor magnus muscle attaches. However, the pubis is not an insertion point for any of the adductor muscles. Therefore, the pubis is not an insertion of the adductor group.

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  • 36. 

    What is the origin of gracillis

    • A.

      Ischial tuberosity

    • B.

      Pubis

    • C.

      Pes anserine

    • D.

      Anterior superior iliac spine

    Correct Answer
    B. Pubis
    Explanation
    The origin of gracilis is the pubis. Gracilis is a muscle located in the inner thigh region of the body. It originates from the pubis bone and extends down to the tibia bone. The pubis bone is one of the three bones that make up the hip bone, along with the ilium and ischium. The pubis bone is located in the front of the pelvis and plays a role in supporting the abdominal muscles and connecting the pelvis to the lower limbs.

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  • 37. 

    What is the insertion of the gracillis

    • A.

      Medial surface of proximal tibia inferior to tibial condyle; contributes to pes anserine

    • B.

      Tibial tuberosity via patellar ligament

    • C.

      Lesser trochanter

    • D.

      Pubic crest

    Correct Answer
    A. Medial surface of proximal tibia inferior to tibial condyle; contributes to pes anserine
    Explanation
    The gracilis muscle inserts on the medial surface of the proximal tibia, specifically inferior to the tibial condyle. It also contributes to the formation of the pes anserine, which is a tendinous insertion on the medial aspect of the tibial tuberosity.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 13, 2011
    Quiz Created by
    Baylor_taylor15
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