Autonomic Nervous System Organization Quiz

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Questions and Answers

How does the Autonomic Nervous System (ANS) functionally maintain homeostasis?

Regulates skeletal muscle movement

Controls the release of neurotransmitters in the brain

Regulates the sense of touch and pain perception

Regulates body temperature via control of sweat glands and vascular smooth muscle (correct)

How does the ANS differ from the Somatic Nervous System anatomically?

The ANS is only involved in involuntary actions, while the somatic NS is responsible for voluntary actions

The ANS directly controls skeletal muscles, while the somatic NS controls smooth and cardiac muscles

The ANS and somatic NS have the same anatomical structure

The ANS controls effectors via a two neuron chain, while the somatic NS synapses directly onto effectors (correct)

Which division of the ANS predominates during resting conditions?

Sympathetic nervous system (SyNS)

Parasympathetic nervous system (PsyNS) (correct)

Somatic nervous system

Central nervous system

What is the primary function of the Sympathetic Nervous System (SyNS)?

Predominates during exertion or emergencies, often referred to as 'fight or flight' Signup and view all the answers

Which division of the autonomic nervous system has preganglionic neuronal cell bodies located in brainstem cranial nerve nuclei?

Parasympathetic Division Signup and view all the answers

Which cranial nerves carry axons for the parasympathetic division?

CN III, VII, IX, and X Signup and view all the answers

Which part of the body receives parasympathetic innervation via the pelvic splanchnic nerves?

Distal abdomen & pelvis Signup and view all the answers

Which division of the autonomic nervous system innervates the viscera of the face?

Parasympathetic Division Signup and view all the answers

Which part of the body receives parasympathetic innervation via the vagus nerve?

Thorax Signup and view all the answers

Which division of the autonomic nervous system innervates the urinary bladder?

Parasympathetic Division Signup and view all the answers

Which part of the body receives sympathetic innervation from spinal cord levels T1 – T5?

Heart Signup and view all the answers

Which division of the autonomic nervous system has ganglionic neurons located in the sympathetic chain ganglia?

Sympathetic Division Signup and view all the answers

Which part of the body receives sympathetic innervation via the celiac ganglion?

Kidney Signup and view all the answers

Which division of the autonomic nervous system has preganglionic neurons located in the IML cell column, S2-S4?

Parasympathetic Division Signup and view all the answers

Which part of the body receives sympathetic innervation via the superior mesenteric ganglion?

Stomach Signup and view all the answers

Which division of the autonomic nervous system generally antagonizes the sympathetic division?

Parasympathetic Division Signup and view all the answers

Where are the preganglionic neurons of the parasympathetic nervous system located?

In the brainstem & spinal cord (S2-S4) Signup and view all the answers

Which part of the body is controlled by the sympathetic nervous system?

Limbs & body wall Signup and view all the answers

Where are the postganglionic neurons of the parasympathetic nervous system located?

In effector organs Signup and view all the answers

Which part of the body is innervated by postganglionic sympathetic neurons in prevertebral ganglia?

Abdomen & pelvis Signup and view all the answers

Where are the preganglionic neurons of the sympathetic nervous system located?

In the spinal cord (T1-L2) Signup and view all the answers

Which part of the body is innervated by postganglionic sympathetic neurons in paravertebral ganglia?

Thoracic viscera and face Signup and view all the answers

What acts as a modified sympathetic ganglion, releasing epinephrine and norepinephrine into the bloodstream?

Adrenal medulla Signup and view all the answers

Where does the somatic innervation occur?

Skeletal muscle by somatic motor neurons Signup and view all the answers

Where do the preganglionic sympathetic fibers target different dermatomes?

Spinal grey matter Signup and view all the answers

Where is the sensory input via dorsal horns received?

Spinal grey matter Signup and view all the answers

Where does the sympathetic nervous system innervate the body wall & limbs through postganglionic neurons?

Paravertebral ganglia Signup and view all the answers

Where does the sympathetic nervous system target the smooth muscle of limbs & body wall?

Paravertebral ganglia Signup and view all the answers

Study Notes

Autonomic Nervous System Organization

Autonomic nervous system (ANS) consists of sympathetic (SyNS) and parasympathetic (PSyNS) divisions
SyNS controls most vascular smooth muscle, limbs & body wall; PSyNS controls digestion
SyNS preganglionic neurons in spinal cord (T1-L2), PSyNS in brainstem & spinal cord (S2-S4)
SyNS postganglionic neurons in sympathetic ganglia near spinal cord, PSyNS ganglia in effector organs
Spinal grey matter: sensory input via dorsal horns, somatic motor via ventral horns, autonomic via IML
SyNS targets smooth muscle of limbs & body wall, viscera of head & thorax, and abdomen & pelvis
Somatic innervation: skeletal muscle by somatic motor neurons, sensory input via dorsal root ganglia
SyNS innervates body wall & limbs through postganglionic sympathetic neurons in paravertebral ganglia
Preganglionic sympathetic fibers can ascend or descend within the sympathetic chain to target different dermatomes
SyNS innervates thoracic viscera and face through postganglionic sympathetic neurons in paravertebral ganglia
Abdominopelvic viscera innervated by postganglionic sympathetic neurons in prevertebral ganglia
Adrenal medulla acts as a modified sympathetic ganglion, releasing epinephrine and norepinephrine into the bloodstream

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Test your knowledge of the organization of the autonomic nervous system (ANS) with this quiz. Explore the divisions, control of smooth muscle, location of preganglionic neurons, innervation of different body regions, and the role of sympathetic ganglia.

Autonomic Nervous System Organization Quiz

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Questions and Answers

How does the Autonomic Nervous System (ANS) functionally maintain homeostasis?

How does the ANS differ from the Somatic Nervous System anatomically?

Which division of the ANS predominates during resting conditions?

What is the primary function of the Sympathetic Nervous System (SyNS)?

Which division of the autonomic nervous system has preganglionic neuronal cell bodies located in brainstem cranial nerve nuclei?

Which cranial nerves carry axons for the parasympathetic division?

Which part of the body receives parasympathetic innervation via the pelvic splanchnic nerves?

Which division of the autonomic nervous system innervates the viscera of the face?

Which part of the body receives parasympathetic innervation via the vagus nerve?

Which division of the autonomic nervous system innervates the urinary bladder?

Which part of the body receives sympathetic innervation from spinal cord levels T1 – T5?

Which division of the autonomic nervous system has ganglionic neurons located in the sympathetic chain ganglia?

Which part of the body receives sympathetic innervation via the celiac ganglion?

Which division of the autonomic nervous system has preganglionic neurons located in the IML cell column, S2-S4?

Which part of the body receives sympathetic innervation via the superior mesenteric ganglion?

Which division of the autonomic nervous system generally antagonizes the sympathetic division?

Where are the preganglionic neurons of the parasympathetic nervous system located?

Which part of the body is controlled by the sympathetic nervous system?

Where are the postganglionic neurons of the parasympathetic nervous system located?

Which part of the body is innervated by postganglionic sympathetic neurons in prevertebral ganglia?

Where are the preganglionic neurons of the sympathetic nervous system located?

Which part of the body is innervated by postganglionic sympathetic neurons in paravertebral ganglia?

What acts as a modified sympathetic ganglion, releasing epinephrine and norepinephrine into the bloodstream?

Where does the somatic innervation occur?

Where do the preganglionic sympathetic fibers target different dermatomes?

Where is the sensory input via dorsal horns received?

Where does the sympathetic nervous system innervate the body wall & limbs through postganglionic neurons?

Where does the sympathetic nervous system target the smooth muscle of limbs & body wall?

Study Notes

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