To 33. pulmonary v.'s carry blood from the _(be specific). the, 34 heart semilunar valves are at the beginning of the, and, )bespecific) 35. give three major branches of the celiac trunk. b. c. a. 36. the femoral a. is a direct branch of the 37. the pvn and son are brain nuclei providing _(s)for the _portion of the pituitary gland.