Why does the sympathetic division have longer-lasting effects when compared to the The sympathetic division exerts long lasting diffuse effects. The parasympathetic division exerts short-lived, highly localized control. Which division has a more local control? More diffuse effects? Yes the SNS can override the effects of the PNS when an emergency arises, during exercise, fight or flight response. What are the neurotransmitters of the ANS Postganglion fibers?Ĭan one division override the effects of the other? When? They also have different efferent pathways and differ in whether they have ganglia. The autonomic nervous system (ANS) stimulates cardiac muscle, smooth muscle, andglands. The somatic system stimulates skeletalmuscles. What are the neurotransmitters of the ANS Preganglion fibers? The two systems have different effectors. What are the primary roles of the parasympathetic division of the ANS?Īll fibers release Acetylcholine (ACh), excitatory effect-depolorization. The two divisions counterbalance each other’s activity-dual innervation. Sypathetic-mobilizes the body during extreme situations. Parasympathetic- performs maintenance activities and conserves body energy. Muscles and Glands are Two Types of Effectors. What are the two subdivision of the autonomic nervous system? What is the primary function of each? Distinguish between the somatic nervous system and the autonomic nervous system. SNS heavily myelinated axons, extend from the CNS to the effector, rapid impulse conduction. (Degree of myelination, number of axons, speeds of conduction.)ĪNS- two neuron chain, preganglion neuron-lightly myelinated, postganglion neuron-extends to effector organ, unmyelinated axon-conduction much slower than SNS. What are the differences between the ANS and SNS efferent pathways? Name the effector organs of the Somatic nervous system (SNS). Name the effector organs of the Autonomic nervous system (ANS). Somatic Nervous system heavily myelinated axons, extend from the CNS to the effector, rapid impulse conduction-skeletal muscles. The Autonomic nervous system is light myelinated or unmyelinated, conduction is much slower, the effectors of the ANS are smooth, cardiac, and glands. What are the three primary differences between the autonomic and somatic nervousĪutonomic nervous system is involuntary, the somatic nervous system is voluntary. What is another name for the Somatic nervous system? Is another name for the Autonomic nervous system? Name the two subdivisions of the efferent division of the peripheral nervous system
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