BIO 2113- CH 14 HW

Which of the following is responsible for the overall integration of the autonomic nervous system (ANS)?

hypothalamus

Which receptor paring below is correct?

nicotinic; acetylchline

Autonomic nerve fibers that increase heart rate, elevate blood pressure, induce dry mouth, and increase sweating do so primarily through the secretion of __________.

norepinephrine

All somatic motor neurons produce __________.

only acetylcholine

Which division of the nervous system has long preganglionic neurons?

parasympathetic

Which of these activities is most likely driven by parasympathetic innervation?

resting and digesting

Which of the following is not an autonomic nervous system (ANS) function?

skeletal muscle reflex

Myelination tends to be heaviest on which types of neurons?

somatic motor neurons

Which of the following releases the neurotransmitter norepinephrine?

terminus of a sympathetic postganglionic neuron

Outflow of the sympathetic division occurs from which regions of the CNS?

thoracic and lumbar

Which set of details correctly identifies a series of events in a sympathetic pathway?

thoracolumbar origin, short preganglionic fiber, ACh release at ganglion, long postganglionic fiber, NE release at effector

Autonomic motor neurons __________.

utilize a two-neuron chain to reach their effectors

Which of the following is an effect of norepinephrine binding to beta 2 adrenergic receptors?

vasodilation

The group of fibers indicated by E represents which of the following?

white rami communicantes

Which pathway(s) compose the autonomic nervous system?

B and C

Assume that the triangular and circular molecules shown in the illustration represent specific neurotransmitters. Which of the following best describes the effect on the heart of neurotransmitters released from the postganglionic neurons of B and C?

B would increase heart rate, while C would decrease it.

Once a preganglionic axon reaches a trunk ganglion, one of three things can happen to the axon. Which of the following is NOT one of these three things?

The axon can course back into the spinal cord to synapse with preganglionic neurons in a different spinal segment.

The adrenal medulla secretes epinephrine during sympathetic stimulation. Which of the following statements describes why epinephrine would increase the sympathetic response?

The same receptors that respond to norepinephrine also respond to epinephrine, increasing the action of both.

Which of the letters in the figure indicates the vagus nerve?

A

In which of the following structures would you expect to see afferent ganglia?

Glossopharyngeal nerve

What differentiates an autonomic reflex from a somatic reflex?

a two-neuron motor pathway

Which of the following would not be an example of autonomic neuropathy?

abnormal stretch reflex responses

Which target organ is not affected by the parasympathetic division of the autonomic nervous system (ANS)?

adrenal medulla

Which of the following target organs/systems is affected by the sympathetic nervous system but is NOT affected by the parasympathetic nervous system?

cellular metabolism