What do sympathetic and parasympathetic divisions refer to quizlet?
The parasympathetic nervous system (PNS) controls homeostasis and the body at rest and is responsible for the body’s “rest and digest” function. The sympathetic nervous system (SNS) controls the body’s responses to a perceived threat and is responsible for the “fight or flight” response.
What has two divisions sympathetic and parasympathetic quizlet?
The two major divisions of the autonomic nervous system are the sympathetic division and the parasympathetic divi- sion. …
What are the sympathetic and parasympathetic divisions?
Sympathetic and parasympathetic divisions have complementary roles: the sympathetic division functions in actions requiring quick responses (fight or flight) and the parasympathetic division regulates actions that do not require rapid responsiveness (rest and digest).
How are the sympathetic and parasympathetic divisions anatomically different quizlet?
The sympathetic division has short preganglionic and long postganglionic fibers. The parasympathetic division has long preganglionic and short postganglionic fibers.
What is the rest and digest division of the autonomic nervous system quizlet?
The parasympathetic nervous system is one of the two main divisions of the autonomic nervous system (ANS). Its general function is to control homeostasis and the body’s rest-and-digest response.
What is the third division of the ANS quizlet?
Preganglionic fibers from the thoracic and lumbar segments form the sympathetic division, or thoracolumbar division (“fight or flight” system), of the ANS. third division of the ANS: it is an extensive network of neurons and nerve networks in the walls of the digestive tract.
What two divisions of the autonomic nervous system have opposite effects on the organs they innervate quizlet?
ANS has 2 divisions: parasympathetic & sympathetic, that are cooperative or contrasting effects on the same target organ. Both divisions have excitatory effects on some target cells and inhibitory effects on others. Comparison of Autonomic Nervous System (a.)
What is one major difference between the sympathetic and parasympathetic nervous systems quizlet?
What is one major difference between the sympathetic and parasympathetic nervous systems? Th e sympathetic nervous system increases physiological arousal, while the parasympathetic nervous system returns the body to a calmer and relaxed state.
What are the 2 main divisions of the ANS?
The autonomic nervous system comprises two antagonistic sets of nerves, the sympathetic and parasympathetic nervous systems. The sympathetic nervous system connects the internal organs to the brain by spinal nerves.
What are the two divisions of the ANS and how does each division affect heart rate quizlet?
The autonomic nervous system has two divisions: the sympathetic nervous system, which accelerates the heart rate, constricts blood vessels, and raises blood pressure, and the parasympathetic nervous system, which slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles.
What is the sympathetic division?
sympathetic nervous system, division of the nervous system that functions to produce localized adjustments (such as sweating as a response to an increase in temperature) and reflex adjustments of the cardiovascular system.