The autonomic nervous system (ANS) is crucial for involuntary physiological functions like heart rate, digestion, and stress responses. It comprises the sympathetic nervous system, which activates the 'fight or flight' response, the parasympathetic nervous system, which promotes 'rest and digest' activities, and the enteric nervous system, which controls gastrointestinal functions. Together, these systems maintain homeostasis and adapt to the body's needs.
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The ANS is a subdivision of the peripheral nervous system that regulates involuntary physiological functions essential for life
Heart Rate
The ANS controls heart rate, among other functions, to maintain homeostasis
Respiratory Rate
The ANS regulates respiratory rate to ensure proper oxygen intake
Blood Pressure
The ANS helps regulate blood pressure to maintain proper circulation
The ANS is responsible for involuntary functions, while the somatic nervous system controls voluntary muscle movements
The sympathetic nervous system mobilizes the body's resources during stress
The parasympathetic nervous system conserves energy and facilitates restorative processes
The enteric nervous system independently manages the functions of the gastrointestinal tract
The sympathetic nervous system triggers the "fight or flight" response during emergencies or stress
The parasympathetic nervous system supports "rest and digest" activities during periods of rest
The enteric nervous system interacts with both the sympathetic and parasympathetic nervous systems to manage gastrointestinal functions
The somatic nervous system enables voluntary control over skeletal muscles, while the autonomic nervous system regulates involuntary functions
The somatic nervous system uses heavily myelinated motor neurons, while the autonomic nervous system uses a combination of myelinated and unmyelinated neurons
The somatic nervous system is controlled by the central nervous system, while the autonomic nervous system is primarily controlled by the hypothalamus and brainstem
00
The ______ division of the ANS activates the body's resources in stressful situations, while the ______ division aids in energy conservation.
sympathetic
parasympathetic
01
Sympathetic Nervous System Activation Effects
Increases heart rate, dilates airways, redirects blood to muscles.
02
Parasympathetic Nervous System Restorative Actions
Reduces heart rate, stimulates digestion, promotes energy saving.
