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Portal vein , portal vein (portal circulation; portal system) Any vein that collects blood from one network of capillaries and transports it directly to a second c… Circulatory System , The circulatory system is a network that carries blood throughout an animal's body. Described as an internal transport system or a distribution syste… circulation , cir·cu·la·tion / ˌsərkyəˈlāshən/ (abbr.: cir. or circ.) • n. 1. movement to and fro or around something, esp. that of fluid in a closed system: an ex… Sympathetic Nervous System , sympathetic nervous system That part of the autonomic nervous system which generally acts to stimulate the body to cope with stress, such as increasi… Parasympathetic Nervous System , parasympathetic nervous system Part of the autonomic nervous system. Its nerve endings release acetylcholine as a neurotransmitter and its actions te… LIPOPROTEINS , lipoprotein One of a group of compounds consisting of a lipid combined with a protein. Lipoproteins are the main structural materials of the membrane…
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NEARBY TERMS
hepatic portal system