The Autonomic Nervous System (ANS) regulates the action of smooth muscles, cardiac muscle, and some glands.
In other words, the ANS regulates involuntary (automatic; unconscious) actions.
There are two major divisions of the ANS. The parasympathetic division functions under normal conditions (to maintain homeostasis), and the sympathetic division of the ANS functions under stress.
Some times the sympathetic divison is called the "Fight or Flight" response and the parasympathetic division is called the "Rest and Repose {turkey dinner syndrome)" response.
the sympathetic and parasympathetic nervous systems.
The skeletal systems connections of joints and muscles
There is only one function that both organ and plant systems have. The one thing organ systems and plant have in common is tissues.
Rats have similar bodily systems and organs to humans, and react in very similar ways.
nutrients flows through systems of vessels
The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food. The survival of the organism depends on the integrated activity of all the organ systems, often coordinated by the endocrine and nervous systems.
There is only one function that both organ and plant systems have. The one thing organ systems and plant have in common is tissues.
Only in the same ways opposite-sex marriage would.
ways of sense organs healthy
the same ways you know if the opposite sex likes you. human nature doesn't change.
nutrients flows through systems of vessels
Classification systems are all the same are all different vary with the taxonomist
It is, of course, illogical to have two opposite meanings for the same symbol. However, language does not necessary evolve in a logical way. Human culture is largely unplanned, it just happens. So if different people decide to use the same symbol in different, or even opposite ways, then the symbol will acquire those different or opposite meanings.