Before preparing a teaching plan for the parents of an infant with patent ductus arteriosus, it is important that the nurse understands this condition. Which statement best describes patent ductus arteriosus?A. Patent ductus arteriosus involves a defect that results in a right-to-left shunting of blood in the heart. B. Patent ductus arteriosus involves a defect in which the fetal shunt between the aorta and the pulmonary artery fails to close. C. Patent ductus arteriosus is a stenotic lesion that must be surgically corrected at birth. D. Patent ductus arteriosus causes an abnormal opening between the four chambers of the heart.

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses. cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown. cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan. cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan. select the correct statements regarding the mode of inheritance of the coat color genes. a) both genes are x-linked. b) both genes are autosomal. c) one of the genes modifies the expression of the other gene. d) each gene has an additive effect on the intensity of coat color. e) each gene independently specifies three colors. f) one of the genes is autosomal, and the other is x-linked.

The fascicles of the deltoid are ; the fascicles of the pectoralis parallel; bipennate fusiform; unipennate multipennate; triangular bipennate; fusiform

What is the primary function of the nervous system?