Which describes the foramen magnum? large opening at the base of the skull that the spinal cord passes through
shallow depression on the skull to which the jaw bone attaches
large projection on the skull to which the jaw muscles attach
tiny spaces between the fused bones of the skull

How does the closing of the ductus arteriosus and ductus venosus alter circulation in an infant? a. increases blood flow to the pulmonary artery and increases blood flow to the umbilical vein b. increases blood flow to the pulmonary artery and reduces blood flow to the umbilical vein c. reduces blood flow to the pulmonary vein and increases blood flow to the umbilical artery d. reduces blood flow to the pulmonary vein and reduces blood flow to the umbilical artery