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Concept explainers
To discuss:
How does ANS can regulate the organs that lack dual innervation?
Introduction:
Autonomic nervous system comprises of sympathetic and parasympathetic divisions. Both these system innervate the visceral organs and have their own effects on the target organs. The sympathetic system operates in heart, lungs, and smooth muscles and it executes its effect on flight or fight response to make organs, excited. In a contrary, parasympathetic system innervates the same organ and its effects executes on rest or digest mode. The innervation of an organ by sympathetic and parasympathetic system is said to be dual innervation. There is some exceptional cases or organs where there is no dual innervation.
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Chapter 15 Solutions
Anatomy & Physiology: The Unity of Form and Function
- Where do fibrous astrocytic processes contact the axonal membranes in the CNS? The internode The paranode The juxtaparanode The nodearrow_forwardCharacteristics o Sympathetic Parasympathetic Main function   Location of nerve roots   Effects on target Organs &physiological processes Heart   Bronchioles(airway passages of the lungs)   Blood vessels to abdominal organs & skin   Blood vessels to skeletal muscle   secretion from digestive glands   Urine formation/Micturition (urination)   pupils of the eyearrow_forwardThe outer portion of the cerebrum is covered with cell bodies has no meninges exists in an oxygen-free environment is covered by the pia materarrow_forward
- The anterior gray horn of the spinal cord is occupied mostly by nerve cell bodies. Nerve cell bodies of which type of neurons are most abundant in this area?  Group of answer choices multipolar neurons of the SNS multipolar neurons of the ANS unipolar neurons of the SNS unipolar neurons of the ANSarrow_forwardWhich neurotransmitters are use with the sympathetic and parasympathetic nervous systemarrow_forwardWhich of the following best describes the ANS. Question 83 options: It's a part of the central nervous system It controls the contractions of the skeletal muscles It's a part of the somatic division of the nervous system Does not exist in higher-ordered beings like us, humans It contains the parasympathetic division and the sympathetic divisionarrow_forward
- Difference between the Parasympathetic and sympathetic nervous system.arrow_forwardWhich of the following cranial nerves carries sympathetic fibers?a. oculomotorb. facialc. trigeminald. vaguse. none of themarrow_forwardThe somatic portions of the nervous system innervate: O your brachialis O everything on this list O your heart your blood vessels your intestinesarrow_forward
- Once a sympathetic preganglionic axon reaches a paravertebral ganglion, it can: ascend or descend the sympathetic trunk, to synapse in another paravertebral ganglion. True O Falsearrow_forwardwhich division of the ANS is also called the thoracolumbar division? Why?arrow_forwardWhat accounts for the basophilia of the granular layer of the cerebellar cortexarrow_forward