Exam 14: The Autonomic Nervous System

Albuterol (Ventolin)binds to β₂ receptors and is used by asthma patients to dilate the bronchioles of the lungs and ease breathing.

Which of these effectors is NOT directly controlled by the autonomic nervous system?

Which sympathetic fibers form a splanchnic nerve?

Figure 14.1 Using Figure 14.1, match the following: -Myelin sheath.

Which type of drug would be useful in dilating the pupils for an examination of the retina?

Which of the following is mismatched?

Because many of the same cardiac cells are innervated by both parasympathetic and sympathetic fibers,the influence of the two divisions on the heart is synergistic,meaning contraction is strongest when both divisions act together.

Thermoregulatory responses to increased heat are mediated by the sympathetic nervous division.

Match the following: -Secreted by postganglionic sympathetic fibers to sweat glands.

Most blood vessels are innervated by the sympathetic division alone.

Figure 14.1 Using Figure 14.1, match the following: -Cell body of a somatic motor neuron.

Describe three potential outcomes that result when a preganglionic axon reaches a sympathetic trunk ganglion.

Which of the following is mismatched?

The gray rami communicantes consist of myelinated postganglionic fibers.

Some sympathetic preganglionic fibers stimulate the adrenal medulla to release norepinephrine and epinephrine into the blood,producing a "surge of adrenaline."

Which target organ receives dual innervation?

The parasympathetic fibers of the ________ nerves innervate smooth muscles of the eye that cause the lenses to bulge to accommodate close vision.

The "resting and digesting" division of the autonomic nervous system is the ________.

Visceral reflex arcs differ from somatic in that ________.

The vasomotor tone of blood vessels is mostly under sympathetic control.