Please enable JavaScript.
Coggle requires JavaScript to display documents.
Sympathetic vs Parasympathetic - Coggle Diagram
Sympathetic vs Parasympathetic
Autonomic Nervous System (ANS)
Regulates activity of internal organs
Smooth muscles
Cardiac muscle
Glands
Acting independently of body's consciousness in voluntary control
2 main division
Sympathetic
Parasympathetic
Autonomic nerve pathway
From the control center in the CNS to the target organs are composed of 2 neurons, which meets in synapse of autonomic ganglion
Postganglionic (unmyelinated)
Preganglionic (myelinated)
Sympathetic (SNS)
Fight or flight
Situation that require alertness and energy (eg: facing danger or doing physical activities), ANS activates it sympathetic division to mobilize the body for action
Releases stored energy
Dilate pupils
Accelerate respiratory rate
Inhibits body processes (eg: digestion, urination)
Inceases cardiac output
Preganglionic neurons arise from the thoracic and lumbar region of the spinal cord
SNS has high degree of neuronal divergence (1:20)
Affect of the SNS tend to be widespread
Parasympathetic (PSNS)
During ordinary situation the PSNS division conserves and restores
Stimulate digestion
Removes waste
Decreases respiratory rate
Stores energy
Slows heart beat
Rest and digest
Preganglionic neurons arise from the brain stem and sacral region of spinal cord
Parasympathetic ganglia are located near or within target organs
Degree of neuronal divergence is much lower than SNS (1:4)
PSNS produces more specific localize responses compared to SNS