Chapter 15 The Autonomic Nervous System (ANS)
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Questions and Answers

What are the two parts of the nervous system?

  • Voluntary and involuntary
  • Sympathetic and parasympathetic
  • Central and peripheral
  • Somatic and autonomic (correct)

Which part of the autonomic nervous system is responsible for the 'fight or flight' response?

  • Sympathetic (correct)
  • Parasympathetic
  • Enteric
  • Somatic

Which division of the autonomic nervous system is associated with 'rest and digest' activities?

  • Parasympathetic (correct)
  • Sympathetic
  • Enteric
  • Somatic

Where does the sympathetic division of the ANS come from?

<p>Thoracolumbar system of the spinal cord (C)</p> Signup and view all the answers

How many chain ganglia are there on either side of the vertebral column?

<p>23 (C)</p> Signup and view all the answers

Which response is activated by the sympathetic division of the ANS?

<p>Dilation of eyes (B)</p> Signup and view all the answers

Where do the collateral ganglia associated with the enteric nervous system lie?

<p>Abdominal region (A)</p> Signup and view all the answers

What neurotransmitters are released by the sympathetic response?

<p>Epinephrine and norepinephrine (D)</p> Signup and view all the answers

Which part of the nervous system deals with skeletal muscle?

<p>Somatic (A)</p> Signup and view all the answers

What is the main function of the parasympathetic division of the ANS?

<p>Stimulate digestion and absorption (C)</p> Signup and view all the answers

What are the characteristics of sympathetic axons before the ganglia?

<p>Myelinated and short (B)</p> Signup and view all the answers

What type of synapses are activated by acetylcholine in the autonomic nervous system?

<p>Cholinergic (C)</p> Signup and view all the answers

Which cranial nerve carries fibers to control pupil size?

<p>CN III (B)</p> Signup and view all the answers

What is the function of the sympathetic fibers running to the adrenal medulla?

<p>Quick release of epinephrine and norepinephrine (A)</p> Signup and view all the answers

Which receptors are activated by norepinephrine and epinephrine in the adrenergic system?

<p>Alpha and beta (A)</p> Signup and view all the answers

What type of reflexes must synapse in the CNS?

<p>Long reflexes (D)</p> Signup and view all the answers

What is the term for an area of a nerve that houses neurotransmitters but is not at the end like in the somatic nervous system?

<p>Varicosity (B)</p> Signup and view all the answers

Which part of the brain is involved in memory, emotional response, and influences the hypothalamus based on emotional states?

<p>Amygdala (C)</p> Signup and view all the answers

Which drugs come from outside the body and can affect the autonomic nervous system?

<p>Exogenous drugs (B)</p> Signup and view all the answers

What is the term for an increase in blood pressure and heart rate when a person stands up?

<p>Orthostatic hypotension (A)</p> Signup and view all the answers

Which part of the nervous system is responsible for controlling skeletal muscle?

<p>Somatic nervous system (A)</p> Signup and view all the answers

What is the primary function of the parasympathetic nervous system?

<p>Rest and digest response (D)</p> Signup and view all the answers

Which neurotransmitters are released during the sympathetic response?

<p>Epinephrine and norepinephrine (A)</p> Signup and view all the answers

From which system does the sympathetic division of the ANS originate?

<p>Thoracolumbar system (C)</p> Signup and view all the answers

How many chain ganglia are there on either side of the vertebral column?

<p>23 (B)</p> Signup and view all the answers

Which part of the nervous system is associated with digestion and absorption?

<p>Enteric nervous system (D)</p> Signup and view all the answers

Where do the collateral ganglia, associated with the enteric nervous system, distribute their signals?

<p>To smooth muscle of the digestive system (A)</p> Signup and view all the answers

What is the function of the sympathetic response on blood flow to digestive organs?

<p>Reduce blood flow (C)</p> Signup and view all the answers

Where does a central neuron in the lateral horn run to in the sympathetic division?

<p>Sympathetic chain ganglia (D)</p> Signup and view all the answers

What are the main effects of the sympathetic response?

<p>Reducing blood flow to muscles and activating sweat glands (C)</p> Signup and view all the answers

What type of synapse is activated by acetylcholine?

<p>Cholinergic (B)</p> Signup and view all the answers

Which cranial nerve carries fibers to control pupil size?

<p>CN III (B)</p> Signup and view all the answers

Where do parasympathetic fibers run to in the target effector?

<p>Both terminal and intramural ganglia (D)</p> Signup and view all the answers

Which receptors are activated by norepinephrine and epinephrine in the adrenergic system?

<p>Alpha and beta (B)</p> Signup and view all the answers

What is the function of varicosities in autonomic neurons?

<p>Spread neurotransmitters along the length of the nerve (C)</p> Signup and view all the answers

Which area is involved in memory and emotional response, influencing the hypothalamus based on emotional states?

<p>Amygdala (D)</p> Signup and view all the answers

How are autonomic reflexes different from somatic reflexes?

<p>The efferent branch has both pre and post ganglionic fibers (B)</p> Signup and view all the answers

What does orthostatic hypotension refer to?

<p>BP and HR increasing when a person stands up (B)</p> Signup and view all the answers

Which system exerts more control over the heart under normal circumstances?

<p>Parasympathetic system (C)</p> Signup and view all the answers

From where do most parasympathetic fibers come?

<p>Cranial nerves (D)</p> Signup and view all the answers

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