Concept explainers
To identify:
The two major divisions of ANS
Introduction:
Nervous system is the main controller of all the systems present in the body. It regulates and controls the functioning of all the body systems. It has two parts Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The PNS is further divided into two sub-parts, the ANS or the autonomic nervous system and the SNS or the somatic nervous system.
Explanation of Solution
ANS controls the autonomic functions like the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal. It also helps in maintaining the internal homeostasis of temperature, salt concentration, blood sugar, oxygen and the carbon dioxide concentration in the blood.
It has two sub-parts the sympathetic nervous system and the parasympathetic nervous system.
- Sympathetic nervous system performs functions like dilation of pupil, increment in the rate of heart beat etc. It is mostly secreted during the daytime when bodies needs energy and have to perform actions.
- Parasympathetic nervous system works antagonistically to the sympathetic nervous system, it calms down the body by decreasing the blood flow and blood pressure, contraction of the pupil, decreasing the heart beat etc. It helps to release stress of the body. It is secreted during the night when body has to relax and calm down
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Chapter 16 Solutions
Fundamentals of Anatomy & Physiology (11th Edition)
- Which ANS division produces the most generalizedeffects? How does this happen?arrow_forwardExplain opposite effects, cooperative effects, andgeneral versus localized effects for the ANS.arrow_forwardDescribe the basic differences between the parasympathetic and sympathetic divisions of the ANSarrow_forward
- Explain dual innervation of the ANS.arrow_forwardState the differences between SNS and ANS. List the major anatomical and microscopic components of the ANS.arrow_forwardWhich part of the brain is the main integration center of the ANS? Which part exerts the most direct influence over autonomic functions?arrow_forward
- Identify the cranial nerves involved in the parasympatheticdivision of the ANS.arrow_forwardname the neurotransmitters employed at differentsynapses of the ANS;arrow_forwardThere are 2 neurons in the ANS pathway – a preganglionic neuron and a postganglionic neuron. Describe each neuron (short or long) and what neurotransmitter is released from each neuron. Describe the neurons for each division of the ANS: (short description, NOT essay )arrow_forward
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