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Autonomic nervous system fibers are involved in all of the following except _________blank.
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The motor pathway of the autonomic nervous system usually involves _________blank neurons.
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Unit 5 Chapter 15
Assessment 2 wrong
| Question | Answer |
|---|---|
| Autonomic nervous system fibers are involved in all of the following except _________blank. | maintaining tonicity of the muscles of the neck |
| The motor pathway of the autonomic nervous system usually involves _________blank neurons. | two |
| Which of the following statements is true regarding parasympathetic tone? | It holds the resting heart rate below its intrinsic rate. |
| In response to high blood pressure, stretch receptors called _________blank in the walls of arteries carrying blood to the head, will trigger a reflex that causes the heart to _________blank its beats per minute. | baroreceptors; decrease |
| Preganglionic axons run from the _________blank to the _________blank. | gray matter; autonomic ganglia |
| The autonomic nervous system controls all of the following except the _________blank. adrenal gland smooth muscle in the walls of the aorta cardiac muscle in the right atrium skeletal muscle in the rectus abdominis parotid salivary gland | skeletal muscle in the rectus abdominis ANS controls glands cardiac and smooth muscle |
| Preganglionic axons of the autonomic efferent pathway are _________blank and secrete _________blank. | myelinated; acetylcholine (ACh) |
| The parasympathetic division arises from the _________blank regions of the spinal cord. | brain and sacral |
| _________blank nerve(s) pass(es) throughout sympathetic ganglia without synapsing. | Splanchnic |
| The adrenal medulla secretes mostly _________blank. | epinephrine (adrenaline)85% |
| Most preganglionic axons in the sympathetic nervous system synapse with _________blank. | 10-20 postganglionic neurons |
| White rami carry _________blank neurons, while gray rami carry _________blank neurons. | myelinated preganglionic; unmyelinated postganglionic |
| Which of the following structures releases neurotransmitter molecules in a paravertebral ganglion? | Sympathetic preganglionic axon |
| Most axons of the parasympathetic nervous system travel in the _________blank nerve. | vagus nerve |
| Which of the following structures is not associated with the autonomic nervous system? Preganglionic neuron Postganglionic neuron Splanchnic nerve Oculomotor nerve All of these are associated with the autonomic nervous system. | All of these are associated with the autonomic nervous system. |
| The enzyme that breaks down norepinephrine (NE) is called _________blank. | monoamine oxidase (MAO) |
| Drugs that are monoamine oxidase (MAO) inhibitors would most likely _________blank. | decrease the amount of NE destroyed and may be used as an antidepressant |
| The binding of _________blank to a nicotinic receptor of a muscle fiber will _________blank it. | acetylcholine; excite |
| The neurotransmitter(s) associated with autonomic ganglia is(are) _________blank. | acetylcholine (ACh)/ |
| Propranolol, a beta-blocker, is typically used to _________blank. | decrease heart rate |
| _________blank is an example of the cooperative effect between the two autonomic nervous system divisions. | Orgasm |
| If a cell has α1 adrenergic receptors, it is sensitive to _________. | norepinephrine (NE) |
| Antagonistic effects of the two divisions of the autonomic nervous system are exemplified in the control of _________blank. | gastrointestinal motility/ |
| Which of the following contains primarily adrenergic fibers? | Postganglionic neurons of the sympathetic division |
| Autonomic function receives input from all these except _________blank. | spinal cord? |
| Which one of the following best describes the order of a visceral reflex? | Sensory receptor → afferent nerve fiber → interneuron → efferent nerve fiber → gland |
| Which of the following is not a reason that somatic reflexes act faster than visceral reflexes? | The effector organs in the somatic reflex are closer to the spinal cord |
| Which of the following is not a characteristic of the enteric plexus? | Its reflex arcs are associated with the spinal cord. |
| Damage to the _________blank may affect near vision accommodation. | oculomotor nerve (CN III) |
| The solar plexus is used as a name for the _________blank. | the celiac and mesenteric ganglia |
| Which of the following is more effective in producing bronchodilation? | Norepinephrine |
| A possible explanation for the effect of caffeine is that it blocks the receptor for a neuromodulator in the brain called _________blank, which inhibits ACh release by cholinergic neurons. | adenosine |
| Muscarinic receptors bind _________blank. | acetylcholine |
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