el cpleting ths xercise, you should be able to: Locate and identify the muscles
ID: 3478356 • Letter: E
Question
el cpleting ths xercise, you should be able to: Locate and identify the muscles that move the thigh, leg, and foot. Describe and demonstrate the actions of each of these muscles. Locate the origin and insertion of each of these muscles in a human skeleton and on muscular models. The corresponds to the assessments Assessment for this Exercise. indicated in the Laboratory r limb ity: Pre-Lab Carefully read the introductory material and examine the entire lab. Be familiar with the locations, actions, origins, and insertions of the muscles of the hip and lower limb from lecture or the textbook. Answer the pre-lab questions. Pre-Lab Questions Select the correct answer for each of the following questions: 1. Muscles that move the thigh at the hip joint have origins on the a. pelvis. c. tibia. b. femur d. patella. 2. Anterior thigh muscles serve as prime movers of a. flexion of the leg at the knee joint. b. abduction of the thigh at the hip joint. c. adduction of the thigh at the hip joint. d. extension of the leg at the knee joint. 3·The muscles of the lower limb than those of the upper limb. a. are more numerous c. conduct actions with b. are larger d. are less powerful more precision 4. Which of the following muscles is not part of the quadriceps group? b. vastus lateralis d. vastus medialis a. rectus femoris C. Which of the following muscles is not part of the hamstring group? a. rectus femoris c. semitendinosus 5. b. biceps femoris d. semimembranosus 6. Muscles located in the lateral leg include actions of a. extension of the knee joint. c. flexion of the toes. b. eversion of the foot. d. extension of the toes. 255Explanation / Answer
Ans 1: Pelvis. Muscles that move the thigh at the hip joint have their origins on the pelvis and insertions on the femur. They are attached to the anterior pelvis serve to flex the thigh at the hip joint. While one attached on the posterior pelvis act to extend the thigh at the hip joint. And the attachment on the lateral side of the pelvis act as abductors and rotators the thigh at the hip joint and the one attached to the medial pelvis serve as a adductors of the thigh at the hip joint.
Ans 2: d.
Extension means the straightening or the increasing of an angle between femur and lower leg. And during the full extension of the Knee tibia externally rotates at the 10 to achieve alignment of tibial or femoral condyles. It closes the congruency of articular surfaces and there is no appreciable rotation of knee possible.
Ans 3: b.
The muscles of the lower limb are larger and are involved in powerful contractions for walking or running and also for the isometric contractions in standing compared to the forearm, the leg has fewer muscles because the foot is not as involved in actions that require precision movements as the hand.
Ans 4: c. semidinosus muscle
These muscles are one of the three muscles which make up the hamstring and found on the back of the thigh and runs from the base of the pelvis i.e., the tuberosity of the ischium to the back of the tibia
Ans 5: a. rectus femoris.
Rectus femoris belongs to the Quadricep femoris group. Its action includes the extension of leg at knee, flexes thigh at hip origin, anterior inferior iliac spine and superior margin of acetabelum. Insertion rectus femoris: patella by common quadriceps tendon, which continues as patellar ligament to tibial tuberosity.
Ans 6: b. eversion of the foot
Eversion is the anatomical term for motion and it shows the movement of the sole of the foot away from the median plane. It means turning the inside out. Everting the foot is the lifting up the lateral or the outer side or the edge of the foot i.e., standing on the inside of our foot. The opposite of eversion is inversion meaning standing on the outside edge of our foot. Eversion and inversion are movements of the ankle in the frontal plane i.e., the movements run parallel to the front and back of our body.
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