Question 1

Which nerve primarily innervates the gluteus maximus muscle?

Accepted Answer

Inferior gluteal nerve

Question 2

A patient presents with difficulty abducting their hip. Damage to which muscle is most likely responsible?

Accepted Answer

Gluteus medius

Question 3

Which of the following is the correct origin and insertion for the gluteus medius muscle?

Accepted Answer

Origin: Gluteal surface of ilium; Insertion: Greater trochanter of femur

Question 4

Which muscle is the largest in the body in terms of mass and is responsible for extending and laterally rotating the hip?

Accepted Answer

Gluteus maximus

Question 5

During an intramuscular injection in the upper lateral quadrant of the gluteal region, which nerve is most at risk if the injection is misplaced?

Accepted Answer

Sciatic nerve

Question 6

Which muscle works together with the gluteus medius to abduct and medially rotate the hip?

Accepted Answer

Gluteus minimus

Question 7

If the superior gluteal nerve is damaged, which function would be most impaired?

Accepted Answer

Abduction and medial rotation of the hip

Question 8

Which anatomical structure serves as the insertion point for both the gluteus maximus and tensor fasciae latae?

Accepted Answer

Iliotibial tract

Question 9

A patient is unable to extend their hip unless it is hyperflexed first. Which muscle is most likely affected?

Accepted Answer

Gluteus maximus

Question 10

Which of the following best describes the function of the gluteus minimus muscle?

Accepted Answer

Abducts and medially rotates the hip

Question 11

Which spinal nerve roots contribute to the innervation of the lateral quadrant of the hip-thigh region?

Accepted Answer

L5-S2

Question 12

A patient presents with a positive Trendelenburg sign (hip drops on the opposite side when standing on one leg). Which muscle is most likely weak or paralyzed?

Accepted Answer

Gluteus medius

Question 13

Which muscle originates from the gluteal surface of the ilium and inserts on the greater trochanter of the femur, and is innervated by the superior gluteal nerve?

Accepted Answer

Gluteus medius

Question 14

Which equation best represents the force generated by the gluteus maximus during hip extension, assuming muscle force $$F is $$proportional to cross-sectional area $$A$$ and muscle activation $$\alpha$$?

Accepted Answer

$$F = A 	imes \alpha$$

Question 15

Which muscle is a key landmark for locating the sciatic nerve during clinical examination?

Accepted Answer

Piriformis

Question 16

Which of the following statements about the iliotibial tract is correct?

Accepted Answer

It is the insertion site for both the gluteus maximus and tensor fasciae latae

Question 17

Which muscle is most responsible for lateral rotation of the hip joint?

Accepted Answer

Gluteus maximus

Question 18

If a patient has weakness in hip abduction and medial rotation, which nerve is most likely damaged?

Accepted Answer

Superior gluteal nerve

Question 19

Which muscle is deep to the gluteus medius and shares a similar function?

Accepted Answer

Gluteus minimus

Question 20

A patient receives an injection in the lower medial quadrant of the gluteal region. Which complication is most likely?

Accepted Answer

Injury to the sciatic nerve

Gluteal Region: Muscles, Nerves, and Clinical Considerations 9.2

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