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Chapter 19

自律神経系

Chapter 19

The Autonomic Nervous System

The autonomic nervous system, or ANS, is a network of motor neurons that regulates the activity of smooth muscles, cardiac muscles, and glands. The ANS is …
The sympathetic division of the ANS prepares the body for stress, physical activity, and increased energy demands. Its preganglionic fibers originate in …
The sympathetic chains are paired ganglia located bilaterally along the spinal cord. They are synapse sites between the preganglionic and postganglionic …
The collateral ganglia are the synapse sites between the preganglionic and postganglionic fibers that innervate the abdominal and pelvic region organs. …
Sympathetic signaling activates the sympathetic nervous system through the interactions between neurotransmitters and their receptors on target …
The sympathetic nervous system triggers numerous physiological changes to prepare the body for the fight-or-flight response. During rigorous physical …
The parasympathetic division of the ANS operates during non-stressful situations, allowing for relaxation and energy conservation. It promotes digestion, …
The cranial part of the ANS parasympathetic division consists of preganglionic fibers that originate in the brainstem and innervate various structures in …
Parasympathetic signaling relays information from the nervous system to target organs, promoting rest, digestion, and relaxation responses. This pathway …
Abnormal regulation of smooth muscle function is a characteristic of many autonomic nervous system disorders. The most severe of these disorders include …
The autonomic nervous system (ANS) consists of two branches, the parasympathetic and sympathetic nervous systems, and controls the function of internal …
The bilateral major pelvic ganglia (MPG; synonym, pelvic ganglia) are the primary source of postganglionic sympathetic and parasympathetic neurons …
Sympathetic neurons from the embryonic rat superior cervical ganglia (SCG) have been used as an in vitro model system for peripheral neurons to study …