Evolution and general anatomy of the autonomic nervous system.
D000663:Amphibians / Q000033:anatomy & histology; D000818:Animals; D001341:Autonomic Nervous System / Q000033:anatomy & histology*; D005075:Biological Evolution; D001717:Birds / Q000033:anatomy & histology; D005399:Fishes / Q000033:anatomy & histology; D008322:Mammals / Q000033:anatomy & histology; D012104:Reptiles / Q000033:anatomy & histology; D013045:Species Specificity