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()5, 2, 4, 3, 6, 1 D)6, 4, 2, 5, 3, 1 10. Events in the cardiac cycle create recognizable heart sounds. What information should the nurse provide the client about the first heart sound? A) Produced by the closure of the AV valves when the ventricles contract B) Produced by the closure of the aortic and pulmonary semilunar valves when the ventricles relax C)Produced when ventricular filling creates audible vibrations during the silent diastolic phase D) Produced from turbulent blood flow through the heart's chambers and valves 11. What occurs in a negative feedback system or loop? Select all that apply. A) Hormone secretion ceases B)Glandular response is inhibited C) Hormone production increases D) Glandular response continues E) Desired hormone levels are achieved 12. The nurse identifies which characteristic as a result of aging on the endocrine system? A) Decrease in metabolic rate B)Wakefulness at night C)Decrease in voluntary movements D) Increased susceptibility to heatstroke 13. What is the correct sequence taken by an electrical impulse through the conduction system of the heart? 1. Purkinje fibers to muscles of ventricles 2 . Bundle of His (AV bundle) 3 . SA (sinoatrial) node 4. AV (atrioventricular) node 5 . Right and left bundle branch 6 . A) 1, 2, 3, 4, 5 B)2, 3, 5, 1, 4 C)3, 4, 2, 5, 1 D) 4, 5, 3, 1, 2 14. Which function is associated with the anterior lobe of the pituitary gland? A) Controls bone and tissue growth B) Increases skin and hair pigmentation C) Raises blood pressure D)Promotes water reabsorption in kidney tubules 15. What part of the brain is responsible for maintaining equilibrium and coordination? A) Temporal lobe B) Parietal lobe C)Occipital lobe D) Cerebellum 16. Which layer of the heart comprises the strongest, thickest layer? A) Myocardium B) Endocardium C)Pericardium D) Tunica media 17. Which hormone intensifies the contractions of the uterus and enables the uterus to push out the fetus? A) Prolactin B)Melanocyte C)Oxytocin D) Insulin