When the _______________ _______________ (letter G) contracts, blood is pushed through the pulmonary semilunar valve into a larger artery called the pulmonary artery trunk. 

________ controls skin pigmentation in the epidermis

a. Prolactin b. Luteinizing hormone c. Melanocyte-stimulating hormone d. All of the above

You are first to arrive at the side of a pond where a boy playing hockey has fallen through the ice. The child is holding onto the ice at the edge of the break and has a distressed look on his face. Your immediate action would be to:

A) Carefully slide on your abdomen out to the patient B) Instruct the patient to remain still until the rescue team arrives C) Tell the patient to keep moving to keep warm D) Place tarps on the ice and carefully walk out to the patient