Question 1

Which muscle, shown in the image, originates from the ischial tuberosity and inserts on the fibula, and what is its primary action?

Accepted Answer

Biceps femoris; flexes the knee and extends the thigh

Question 2

A patient is unable to flex their knee after a sports injury. Which muscle, labeled in the image, is most likely damaged if the injury is to the medial posterior thigh?

Accepted Answer

Semitendinosus

Question 3

Which of the following best describes the insertion point of the semimembranosus muscle as shown in the image?

Accepted Answer

Tibia

Question 4

If a person has difficulty extending their thigh, which muscle labeled in the image is most likely impaired?

Accepted Answer

Biceps femoris

Question 5

Which muscle in the image is NOT part of the quadriceps femoris group?

Accepted Answer

Semimembranosus

Question 6

A runner complains of pain in the muscle that originates from the ischial tuberosity and inserts on the tibia. Which muscle is most likely affected?

Accepted Answer

Semitendinosus

Question 7

Which muscle labeled in the image is responsible for both knee flexion and thigh extension?

Accepted Answer

Biceps femoris

Question 8

Damage to which muscle in the image would most likely impair the ability to flex the knee while medially rotating the leg?

Accepted Answer

Semimembranosus

Question 9

Which muscle shown in the image is part of the hamstring group and inserts on the tibia?

Accepted Answer

Semitendinosus

Question 10

If the biceps femoris muscle is paralyzed, which movement would be most affected?

Accepted Answer

Flexion of the knee

Skeletal Muscles: Origins, Insertions, and Actions

Study Guide - Practice Questions

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