More early signs of pregnancy include an aching head, a result of changes in hormones. Just in case you are indeed pregnant, take pg-safe acetaminophen instead of ibuprofen to deal with the pain.
Organs Without Dual Innervation. Although most organs are innervated by both sympathetic and parasympathetic nerves, some-including the adrenal medulla, arrector pili muscles, sweat glands, and most blood vessels-receive only sympathetic innervation.
But allows the body to react in times of emergency. 2 divisions of ANS Sympathetic nervous system acts in emergency Parasympathetic counter acts the sympathetic ns after the emergency SNS increase heart rate increase resp. rate increase b/p decrease digestive system activity PNS decrease heart rate decrease resp. rate decrease b/p increase digestive ...