Abdominal fascial planes

A 67-year-old woman is brought to the emergency department by her husband because of a 1-hour history of severe groin pain, nausea, and vomiting. She has had a groin swelling that worsens with standing, coughing, and straining for the past 3 months. Her pulse is 120/min. Examination shows pallor; there is swelling, erythema, and tenderness to palpation of the right groin that is centered below the inguinal ligament. The most likely cause of this patient's condition is entrapment of an organ between which of the following structures?

A 17-year-old boy comes to the physician because of a 3-month history of pain in his right shoulder. He reports that he has stopped playing for his high school football team because of persistent difficulty lifting his right arm. Physical examination shows impaired active abduction of the right arm from 0 to 15 degrees. After passive abduction of the right arm to 15 degrees, the patient is able to raise his arm above his head. The dysfunctional muscle in this patient is most likely to be innervated by which of the following nerves?