BIOL 2721 HW 10 AUTONOMIC NERVOUS SYSTEM
Regarding reflexes, an efferent pathway carries signals ______ the spinal cord. Away from Toward
Away from
Typically after a unilateral stimulus, autonomic reflexes are ______, while somatic reflexes are ______. Bilateral, unilateral Unilateral, bilateral------------not answer Unilateral, unilateral Bilateral, bilateral
Bilateral, unilateral
Typically after a unilateral stimulus, somatic reflexes are ______, while autonomic reflexes are ______. Bilateral, unilateral----------not the answer Unilateral, bilateral Unilateral, unilateral Bilateral, bilateral
Bilateral, unilateral
The amygdala is responsible for... Emotional responses only Memory function only Both emotional responses and memory functions
Both emotional responses and memory functions
Which of the following actions would be caused by activation of the sympathetic nervous system? Decrease blood flow to the digestive system Decrease delivery of oxygen to skeletal muscles Decrease heart rate Constriction of the pupils
Decrease blood flow to the digestive system
The hypothalamus is responsible for... Autonomic function only Both autonomic and endocrine function Endocrine function only----- not the answer
Endocrine function only
A neurotransmitter like acetylcholine which is created in the body is an example of a(n)... Exogenous chemical Endogenous chemical
Exogenous chemical
A plant extract such as nicotine which can stimulate the nervous system such is an example of a(n)... Exogenous chemical Endogenous chemical
Exogenous chemical
Autonomic reflexes always involve the central nervous system.
False
Referred pain causes people who are having a heart attack to feel uncomfortable sensations... In the left arm and shoulder On their left lower abdomen On their right lower abdomen In the right arm and shoulder
In the left arm and shoulder
Which of the following actions would be caused by activation of the parasympathetic nervous system? Increased delivery of oxygen to skeletal muscles Increased heart rate Dilation of the pupils Increased blood flow to the digestive system
Increased blood flow to the digestive system
A lesion on cranial nerve X (it has been damaged) could cause which of the following issues Difficulty forming tears/watering eyes Difficulty salivating Inhibited pupil reflex Inhibited digestion
Inhibited digestion
Referred pain causes people who have an inflamed appendix to feel uncomfortable sensations... On their right lower abdomen In the right arm and shoulder In the left arm and shoulder On their left upper chest
On their right lower abdomen
Intrinsic heart rate is 100 beats per minute, but average heart rate is much lower. This decrease is because the heart is in ______ tone. Sympathetic Parasympathetic
Parasympathetic
Which division of the autonomic nervous system is characterized by direct connections to the brain stem and sacral spinal cord? Use the diagram below (provided by the Openstax textbook) to help you Sympathetic Parasympathetic
Parasympathetic
Which division of the autonomic nervous system is characterized by relatively long preganglionic fibers that often end very near (or in) the target effector, and relatively short postganglionic fibers? Use the diagram below (provided by the Openstax textbook) to help you.. Parasympathetic Sympathetic
Parasympathetic
Pilocarpine is a muscarinic agonist that causes the iris to constrict, enhancing the cholinergic effect of the parasympathetic nervous system. This drug is a(n)... Sympatholytic drug Anticholinergic drug Parasympathomimetic drug Sympathomimetic drug
Parasympathomimetic drug
Pilocarpine is a muscarinic agonist that causes the iris to constrict, enhancing the cholinergic effect of the parasympathetic nervous system. This drug is a(n)... Sympatholytic drug Parasympathomimetic drug Anticholinergic drug Sympathomimetic drug
Parasympathomimetic drug
Check all that apply: Which nerve fiber can release acetylcholine? a) Preganglionic sympathetic nerve fibers------ not b) Postganglionic sympathetic nerve fibers c) Preganglionic parasympathetic nerve fibers----not d) Postganglionic parasympathetic nerve fibers
Postganglionic sympathetic nerve fibers Postganglionic parasympathetic nerve fibers
Check all that apply: Which nerve fiber releases neurotransmitters that bind to nicotinic receptors? a) Postganglionic sympathetic nerve fibers b) Preganglionic parasympathetic nerve fibers c) Postganglionic parasympathetic nerve fibers d) Preganglionic sympathetic nerve fibers
Preganglionic parasympathetic nerve fibers Preganglionic sympathetic nerve fibers
Blood pressure has very little parasympathetic innervation and is therefore primarily ________ in tone. Parasympathetic Sympathetic
Sympathetic
This division of the autonomic nervous system is associated with postganglionic activation by the release of norepinephrine. Parasympathetic Sympathetic
Sympathetic
This division of the autonomic nervous system is associated with postganglionic activation of sweat glands by the release of acetylcholine. Sympathetic Parasympathetic
Sympathetic
Which division of the autonomic nervous system is characterized by direct connections to the thoracic and upper lumbar spinal cord? Use the diagram below (provided by the Openstax textbook) to help you. Parasympathetic Sympathetic
Sympathetic
Which division of the autonomic nervous system is characterized by relatively short preganglionic fibers that often end in chain ganglia beside the spinal cord? Use the diagram below (provided by the Openstax textbook) to help you. Parasympathetic Sympathetic
Sympathetic
Beta-blockers are a family of adrenergic antagonists that block vasoconstriction, inhibiting the adrenergic effect of the sympathetic nervous system. These drugs are a(n)... Sympatholytic drug Anticholinergic drug````````````````not Parasympathomimetic drug Sympathomimetic drug
Sympatholytic drug
Atropine is a muscarinic antagonist that can cause the iris to dilate, inhibiting the cholinergic effect of the parasympathetic nervous system. This drug is a(n)... Sympatholytic drug------ not Parasympathomimetic drug Anticholinergic drug Sympathomimetic drug---- not the answer
Sympathomimetic drug
Phenylephrine is an adrenergic agonist that causes dilation of the bronchioles, enhancing the adrenergic effect of the sympathetic nervous system. This drug is a(n)... Anticholinergic drug Parasympathomimetic drug Sympathomimetic drug Sympatholytic drug
Sympathomimetic drug
With reflexes, an afferent pathway carries signals ______ the spinal cord. Toward Away from
Toward
Somatic reflexes always involve the central nervous system. True False
True
A drug that acts as an ______ will activate target receptors. antagonist agonist
agonist
A drug that acts as an ______ will block activation of target receptors antagonist agonist
antagonist
This division of the ANS is responsible for constricting blood vessels. sympathetic division parasympathetic division
sympathetic division
This division of the ANS is responsible for increasing heart rate. sympathetic division parasympathetic division
sympathetic division
Activation of the sympathetic nervous system causes bronchioles in the lungs to expand (dilate). In this example, the lungs are... target effectors prevertebral ganglia-----------------not answer collateral ganglia------not
target effectors
