To explain:
Which component of the ANS arises from the embryonic neural tube and which ones arise from the neural crest.
Introduction:
The ANS (autonomic nervous system) comprises of efferent nerves that control the cardiac muscle, smooth muscles, and exocrine glands. It is divided into two systems depending on the level at which nerves exit the CNS (central nervous system). The sympathetic nervous system consists of autonomic nerves from the thoracic and lumbar parts of the spinal cord while the parasympathetic nervous system contains nerves from the lower brainstem and sacral cord. Although the classification is anatomically based, there are various physical, functional, and biochemical variations between the two systems.
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Chapter 16 Solutions
Connect Online Access for Saladin Human Anatomy
- The 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_forwardWhich organ or tissue is NOT dual innervated by the ANS? Skin Respiratory airways Heartarrow_forwardExplain why the sympathetic division is also called thethoracolumbar division even though its paravertebral ganglia extend all the way from the cervical to the sacral region.arrow_forward
- The ANS is subdivided into sympathetic and parasympathetic divisions. Review the differences between these two divisions by filling in the table below: Characteristic Sympathetic or Parasympathetic? Calms you down — "rest and digest" ["", ""] Pumps you up — "fight or flight" ["", ""] Preganglionic neuron long, postganglionic neuron short ["", ""] Preganglionic neuron short, postganglionic neuron long ["", ""] Arises from cranial or sacral spinal nerves ["", ""] Arises from spinal nerves T1-L2 ["", ""] Synapses near the spinal cord ["", ""] Synapses near the target organ ["", ""] Increases heart and respiratory rate ["", ""] Stimulates…arrow_forwardThe white matter of the cerebellum is called the: vermis arbor vitae O folliculonodular lobe O corpora quadrigeminaarrow_forwardCompare and contrast the anatomy and functions of theSNS and the ANS.arrow_forward
- In terms of neurotransmitters and receptors, explain how the two divisions of the ANS can have contrasting effects on the same organ.arrow_forwardGive two exceptions to the generalization that organs areinnervated by both divisions of the ANS.arrow_forwardThe 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_forward
- The cranial outflow of the parasympathetic division supplies the visceral structures in the head via these structures execpt: 1. Occulomotor 2. Vagus 3. Facial 4. Glossophrayngealarrow_forwardWhat is the nerve supply of the vallate papillae in the oral part (anterior 2/3) of the tongue Lingual (CN V3) nerve Chorda tympani of facial (CN VII) nerve Glossopharyngeal (CN IX) nerve Vagus (CN X) nervearrow_forwardWhat part of the ANS involves the vagus nerve?arrow_forward