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Autonomic nervous system

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Autonomic Nervous System- Anatomy- PMU 1st Year 2nd Semester

Question 1 of 24

1

Sympathetic nervous system has cranial and sacral parts.

Select one of the following:

  • True
  • False

Explanation

Question 2 of 24

1

Parasympathetic nervous system has long preganglionic and short postganglionic fibers.

Select one of the following:

  • True
  • False

Explanation

Question 3 of 24

1

Hippocampus is a three-layered allocortex

Select one of the following:

  • True
  • False

Explanation

Question 4 of 24

1

Amygdaloid body is concerned with emotion control.

Select one of the following:

  • True
  • False

Explanation

Question 5 of 24

1

Adrenal medulla cells are derived from modified postganglionic sympathetic neurons

Select one of the following:

  • True
  • False

Explanation

Question 6 of 24

1

Both preganglionic and postganglionic fibers of the sympathetic nervous system are myelinated.

Select one of the following:

  • True
  • False

Explanation

Question 7 of 24

1

The pupil is small if the stellate ganglion is removed from the neck of the first rib.

Select one of the following:

  • True
  • False

Explanation

Question 8 of 24

1

The rami communicantes are associated only with the sympathetic division of the ANS

Select one of the following:

  • True
  • False

Explanation

Question 9 of 24

1

The adrenal medulla is considered a “misplaced” sympathetic ganglion by some

Select one of the following:

  • True
  • False

Explanation

Question 10 of 24

1

Which of the following is true in respect to the ciliary ganglion?

Select one of the following:

  • Sympathetic fibers synapse in the ciliary ganglion.

  • Afferent fibers from the iris and cornea pass through the ganglion

  • The ganglion is located between the optic nerve and medial rectus

  • Parasympathetic fibers in the ganglion are derived from CN VII

  • Parasympathetic fibers in the ganglion are distributed to the retina and lens

Explanation

Question 11 of 24

1

Which of the nerves below provides parasympathetic supply of glandula parotidea:

Select one of the following:

  • n. petrosus profundus

  • n. glossopharyngeus

  • n. trigeminus

  • n. facialis

  • n. vagus

Explanation

Question 12 of 24

1

The sacral outflow of the parasympathetic (craniosacral) system enters the pelvic Plexus via:

Select one of the following:

  • hypogastric nerves

  • pelvic splanchnic nerves

  • pudendal nerves

  • sacral splanchnic nerves

Explanation

Question 13 of 24

1

Preganglionic parasympathetic nerve fibers within the pelvic (inferior hypogastric) plexus arise from S2, 3, 4 and enter the plexus via:

Select one of the following:

  • gray rami communicantes

  • hypogastric nerves

  • pelvic splanchnic nerves

  • sacral splanchnic nerves

  • white rami conummunicantes

Explanation

Question 14 of 24

1

Choose the statement that does not accurately reflect the differences between the somatic and autonomic motor systems.

Select one of the following:

  • Somatic nerve fibers are fast-conducting; autonomic fibers are slow-conducting.

  • Somatic leads to heart muscle; autonomic leads to skeletal muscle.

  • Somatic impulses are excitatory only; autonomic impulses are excitatory or inhibitory.

  • Somatic receptors have a specialized motor end plate; autonomic receptors do not.

Explanation

Question 15 of 24

1

Which is the true statement regarding the sympathetic nervous system?

Select one of the following:

  • Both preganglionic and postganglionic fibers are myelinated.

  • Preganglionic neurons exit the spinal cord in the cervical and sacral regions.

  • Adrenal medulla cells are derived from modified postganglionic sympathetic neurons.

  • The sympathetic nervous system is rarely activated as a unit.

Explanation

Question 16 of 24

1

Regarding the parasympathetic division of the autonomic nervous system:

Select one of the following:

  • parasympathetic preganglionic fibers are found in all cranial nerves

  • parasympathetic vasoconstrictor fibers are present in the salivary glands

  • paraympathetic postganglionic neurons are found in spinal ganglia from T1 to L2

  • parasympathetic postganglionic fibers secrete acetylcholine onto their target organs

Explanation

Question 17 of 24

1

Regarding the role of the autonomic innervation:

Select one of the following:

  • Stimulation of the the sympathetic nerves to the eyes causes pupillary constriction

  • Activation of the sympathetic system causes vasodilatation in the skin

  • Activation of the sympathetic system causes vasoconstriction in the viscera and vasodilatation in the skeletal muscle

  • Stimulation of the vagus nerves speed up the heart

Explanation

Question 18 of 24

1

The rami communicantes are designated white or gray depending on whether they are

Select one of the following:

  • from the sympathetic or parasympathetic system

  • in the thoracic or lumbar region

  • myelinated or not

  • from the white or gray matter of the central nervous system

Explanation

Question 19 of 24

5

Parasympathetic nerves in the thorax

Select one or more of the following:

  • cause contraction of the muscle in the lung

  • supply sensory fibres to the lung

  • are secretormotor to the oesophagus.

  • cause the longitudinal muscle of the oesophagus to relax.

  • supply sensory fibres to the pericardium.

Explanation

Question 20 of 24

5

Which of the cranial nerve nuclei listed below are visceromotor (parasympathetic)?

Select one or more of the following:

  • nucleus dorsalis nervi vagi

  • n.salivatorius caudaiis

  • n.ambiguus

  • n.nervi facialis

  • n.solitarius

Explanation

Question 21 of 24

5

Postganglionic sympathetic neurons

Select one or more of the following:

  • release neurotransmtter acetylcholine

  • have non-myelinated axons

  • send short fibers to the target organs

  • have slow-conducting fibers

  • supply skeletal muscles

Explanation

Question 22 of 24

5

Regarding the sympathetic division of the autonomic nervous system

Select one or more of the following:

  • acetylcholine is secreted by some sympathetic postganglionic fibers.

  • most sympathetic preganglionic fibers secrete norepinephrine (noradrenaline).

  • sympathetic postganglionic neurons are found in spinal segments from T1 to L2.

  • the sympathetic chain extends from the thoracic to the sacral regions of the spinal cord.

  • sympathetic preganglionic neurons are found in spinal lateral horns.

Explanation

Question 23 of 24

5

Regarding the parasympathetic division of the autonomic nervous system

Select one or more of the following:

  • parasympathetic preganglionic fibers are found in all cranial nerves.

  • parasympathetic postganglionic neurons are found in spinal ganglia from T1 to L2.

  • parasympathetic postganglionic fibers secrete acetylcholine onto their target organs.

  • parasympathetic preganglionic neurons are found in sacral segments.

  • parasympathetic ganglia are close to the organs.

Explanation

Question 24 of 24

2

Fill the blank spaces to complete the text.

The pelvic splanchnic nerves primarily carry to the plexus.

Explanation

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