Question 1

Which muscle is primarily responsible for elbow flexion and supination of the forearm?

Accepted Answer

Biceps brachii

Question 2

During a standard intramuscular (IM) injection in the hip region, which muscle is most commonly targeted to avoid nerve injury?

Accepted Answer

Gluteus medius

Question 3

A soccer player sustains a hamstring injury while sprinting. Which group of muscles is most likely affected?

Accepted Answer

Biceps femoris, semitendinosus, semimembranosus

Question 4

Which muscle acts as the antagonist to the biceps brachii during elbow extension?

Accepted Answer

Triceps brachii

Question 5

If a patient cannot dorsiflex their foot, which muscle is most likely impaired?

Accepted Answer

Tibialis anterior

Question 6

Which muscle group is responsible for extending the knee joint?

Accepted Answer

Quadriceps femoris

Question 7

A patient presents with difficulty abducting their thigh. Which muscle is most likely weakened?

Accepted Answer

Gluteus medius

Question 8

Which muscle is primarily responsible for plantar flexion of the foot when pushing off during walking?

Accepted Answer

Gastrocnemius

Question 9

Which muscle stabilizes the pelvis during walking and prevents the opposite hip from dropping?

Accepted Answer

Gluteus medius

Question 10

Which muscle is involved in both knee flexion and hip extension?

Accepted Answer

Biceps femoris

Question 11

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

Accepted Answer

Knee extension

Question 12

Which muscle is most likely to be injured during a rapid acceleration or deceleration in sports, leading to posterior thigh pain?

Accepted Answer

Biceps femoris

Question 13

Which muscle is responsible for inversion of the foot?

Accepted Answer

Tibialis anterior

Question 14

A patient is unable to extend their leg at the knee. Which muscle group is most likely affected?

Accepted Answer

Quadriceps femoris

Question 15

Which muscle is the primary extensor of the hip and is most active during climbing stairs?

Accepted Answer

Gluteus maximus

Question 16

Which muscle group is responsible for adducting the thighs together?

Accepted Answer

Adductors

Question 17

During a jump, which muscle contracts to flex the foot at the ankle and allow for push-off?

Accepted Answer

Gastrocnemius

Question 18

Which muscle is located under the biceps brachii and assists in elbow flexion?

Accepted Answer

Brachialis

Question 19

Which muscle is involved in extension of the toes and dorsiflexion of the foot?

Accepted Answer

Extensor digitorum longus

Question 20

A patient presents with weakness in plantar flexion and cannot stand on tiptoe. Which muscle is most likely affected?

Accepted Answer

Gastrocnemius

Anatomy Muscle II

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