Anatomy and Physiology Practice Questions
and Answers, Muscle Functions, Origins,
Insertions, Innervation, Blood Supply,
Diagrams, Clinical Applications, and Detailed
Explanations for Nursing, Medical, and Allied
Health Students
THIGH MUSCLES
STUDY QUESTIONS & ANSWERS 51–100
,Reference Diagram: Anterior and Posterior Views
Questions and Answers
51. Which muscle is the primary knee extensor group shown on
the anterior thigh?
Answer: The quadriceps femoris group.
52. Name the four muscles that make up the quadriceps femoris.
Answer: Rectus femoris, vastus lateralis, vastus medialis, and
vastus intermedius. The diagram labels the first three clearly.
53. Which quadriceps muscle crosses both the hip and knee
joints?
Answer: Rectus femoris.
54. Why can rectus femoris flex the hip as well as extend the
knee?
Answer: It crosses both the hip and knee joints, so it can act on
both.
, 55. Which quadriceps muscle lies on the lateral side of the
thigh?
Answer: Vastus lateralis.
56. Which quadriceps muscle lies on the medial side near the
knee?
Answer: Vastus medialis.
57. What is the role of the quadriceps tendon?
Answer: It connects the quadriceps muscles to the patella and
transmits their force.
58. How is the patellar ligament related to the quadriceps
mechanism?
Answer: It continues from the patella to the tibial tuberosity,
transmitting force for knee extension.
59. Which muscle runs obliquely across the anterior thigh from
the hip toward the medial knee?
Answer: Sartorius.
60. What is the longest muscle in the human body?
Answer: The sartorius.
61. Which movement is produced when the thigh moves away
from the body's midline?
Answer: Hip abduction.
62. Which movement is produced when the thigh moves toward
the body's midline?
Answer: Hip adduction.
63. Which muscle group is most associated with hip adduction?
Answer: The medial thigh adductor group, including adductor
longus, adductor magnus, and gracilis.
64. What is the approximate location of pectineus?
Answer: High in the anterior-medial thigh, near the groin.