The ANS is part of the peripheral nervous system, which includes all neurons outside of the central nervous system. It's always active, even when you're asleep, and works without conscious control. Discussions Grades Which of the following describes the sympathetic division of the autonomic nervous system? [MA: 4] Ganglia primarily found in the cranium stimulates sweat glands synapses with smooth muscle in blood vessel walls has a craniosacral output releases acetylcholine increases heart rate and respiration releases norepinephrine