Concept explainers
Muscles that move the thigh at the hip joint have origins on the
a. pelvis.
b. femur.
c. tibia
d. patella.
Introduction:
Lower limb consists of the largest muscles. Most muscles that act on femur originate on the hipbone.
Answer to Problem 1PL
Correct answer:
The correct answer is option (a) Pelvis.
Explanation of Solution
Explanation/justification for the correct answer:
Option (a) Pelvis. The muscles that move the thigh at the hip joint have their origins on the pelvis. Those muscles attached on the anterior pelvis act to flex the thigh at the hip joint, those attach at the posterior pelvis act to extend the thigh at the hip joint, those attached at the lateral side of the pelvis act as abductors and rotators of the thigh at the hip joint, and those attached on the medial pelvis act as adductors of the thigh at the hip joint. So, the correct answer is option (a).
Explanation for incorrect answer:
Option (b) Femur. Femur is the thigh bone. The muscles that move the thigh at the hip joint originate at pelvis and the insertion I usually on the femur. So, this is an incorrect option.
Option (c) Tibia. Tibia is one of the leg bones. The leg has two bones: a thick strong tibiaon the
medial side and a slender fibula on the lateral side. Tibia and fibula extend from the knee to the ankle. So, this is an incorrect answer.
Option (d) Patella. The patella or kneecap is a roughly triangular sesamoidbone embedded in the tendon of the knee.So, this is an incorrect answer.
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Chapter 25 Solutions
Laboratory Manual For Human Anatomy & Physiology
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