Deck 16: The Autonomic Nervous System and Higher-Order Functions

Question 1

The sympathetic division of the ANS is also known as which of the following?

A)somatic division
B)craniosacral division
C)resting division
D)thoracolumbar division
E)lumbosacral division

Answer 1

D

Question 2

Injury to the neurons of a collateral ganglion would affect the function of the

A)heart.
B)pupils.
C)sweat glands.
D)digestive tract.
E)arrector pili muscles.

Answer 2

D

Question 3

Stimulation of the neurons in the celiac ganglion would lead to

A)relaxation of the urinary sphincter.
B)increased heart rate.
C)conversion of liver glycogen reserves into glucose.
D)activation of ventral sweat glands.
E)increased gastric motility.

Answer 3

C

Question 4

Postganglionic axons usually are

A)myelinated.
B)unmyelinated.
C)larger than preganglionic fibers.
D)located in the brain.
E)located in the spinal cord.

Question 5

Preganglionic neurons of the sympathetic nervous system are located in the

A)lateral gray horns of the cervical cord.
B)anterior gray horns of the cervical and thoracic spinal cord.
C)lateral gray horns of segments T₁ to L₂ of the spinal cord.
D)anterior gray horns of segments T₁ to L₂ of the spinal cord.
E)lateral gray horns of T₁ to S₂ of the spinal cord.

Question 6

The ________ division of the autonomic nervous system is said to function during "rest and digest."

A)sympathetic
B)parasympathetic
C)thoracolumbar
D)visceral
E)somatomotor

Question 7

Craniosacral division is another name for the

A)sympathetic division of the ANS.
B)parasympathetic division of the ANS.
C)somatic nervous system.
D)afferent nervous system.
E)central nervous system.

Question 8

Preganglionic fibers leave the CNS and then synapse on

A)postganglionic fibers.
B)visceral reflex responses.
C)motor neurons.
D)ganglionic neurons.
E)afferent neurons.

Question 9

The parasympathetic nervous system is especially active during which physiological state?

A)exertion
B)trauma
C)digestion
D)stress
E)exercise

Question 10

Preganglionic neurons of the autonomic nervous system are located in

A)the brain.
B)the lateral gray horns of the spinal cord.
C)the posterior gray horns of the spinal cord.
D)both the brain and the lateral gray horns of the spinal cord.
E)the cerebrum.

Question 11

Clusters of ganglionic sympathetic neurons that innervate organs in the abdominopelvic region are called ________ ganglia.

A)intramural
B)collateral
C)chain
D)paravertebral
E)suprarenal

Question 12

In the sympathetic nervous system,where are the preganglionic neurons located?

A)cervical and sacral segments of the spinal cord
B)sacral segments of the spinal cord
C)brain stem
D)thoracic and lumbar segments of the spinal cord
E)cerebellum

Question 13

A visceral motor neuron whose cell body is within the CNS is called a(n)________ neuron.

A)upper motor
B)lower motor
C)preganglionic
D)postganglionic
E)somatomotor

Question 14

In what ways do the two divisions of the autonomic nervous system interact?

A)One division may counterbalance the other division.
B)Occasionally only one division communicates with an organ.
C)Both divisions may work together for the function of an organ or a process.
D)One division may increase function of an organ,while the other division inhibits it.
E)All of the answers are correct.

Question 15

Damage to the ventral roots of the first five thoracic spinal nerves on the right side of the body would interfere with the ability to

A)dilate the right pupil.
B)constrict the right pupil.
C)dilate the left pupil.
D)constrict the left pupil.
E)smile and frown.

Question 16

Ganglionic neurons innervate such things as

A)smooth muscle.
B)cardiac muscle.
C)adipose tissue.
D)glands.
E)All of the answers are correct.

Question 17

Injury to the cervical sympathetic ganglia would affect the function of the

A)heart.
B)pupils.
C)salivary glands.
D)lungs.
E)All of the answers are correct.

Question 18

Which statement is true regarding the somatic nervous system as compared to the autonomic nervous system?

A)Both divisions carry outgoing motor information.
B)Both divisions carry information to visceral organs.
C)The somatic NS requires more neurons than the autonomic pathways.
D)There are no reflexes within the somatic NX,while there are many within the autonomic NS.
E)All of the answers are correct.

Question 19

Clusters of ganglionic sympathetic neurons lying along either side of the spinal cord are called sympathetic ________ ganglia.

A)intramural
B)collateral
C)chain
D)prevertebral
E)suprarenal

Question 20

Sympathetic preganglionic neurons are ________ and have ________ axons.

A)short; myelinated
B)short; unmyelinated
C)long; myelinated
D)long; unmyelinated
E)intermediate; small

Question 21

Figure 16-1 ANS Pathway
Use Figure 16-1 to answer the following questions:
Identify the structure labeled " 1."

A)somatic motor neuron
B)preganglionic neuron
C)sensory neuron
D)ganglionic neuron
E)astrocyte

Question 22

Tom suffers from hypertension (high blood pressure).Which of the following might help deal with his problem?

A)a drug that blocks alpha-1 receptors in smooth muscle
B)a drug that blocks alpha-2 receptors in adipose tissue
C)a drug that increases cAMP levels in cardiac muscle tissue
D)a drug that blocks beta receptors in cardiac muscle tissue
E)a drug that blocks alpha-1 receptors in smooth muscle and blocks beta receptors in cardiac muscle tissue

Question 23

Autonomic disorders would not cause

A)excessive perspiration.
B)appetite.
C)sexual arousal.
D)problems in maintenance of blood pressure.
E)problems related to skeletal muscle function.

Question 24

Specialized ganglionic sympathetic neurons that release hormones into the bloodstream are found within the

A)intramural ganglia.
B)collateral ganglia.
C)chain ganglia.
D)brain stem.
E)suprarenal medullae.

Question 25

Figure 16-1 ANS Pathway
Use Figure 16-1 to answer the following questions:
Identify the round structure labeled "3."

A)dorsal root ganglion
B)spinal nerve
C)chain ganglion
D)intramural ganglion
E)rami communicantes

Question 26

The suprarenal medullae secrete

A)medullin.
B)epinephrine.
C)norepinephrine.
D)renin.
E)both epinephrine and norepinephrine.

Question 27

The celiac,superior mesenteric and inferior mesenteric ganglia are collectively called ________ ganglia.

A)chain
B)collateral
C)intramural
D)paravertebral
E)terminal

Question 28

Collateral ganglia contain neurons that innervate tissues and organs in which cavity?

A)thoracic
B)pelvic
C)abdominal
D)craniosacral
E)abdominopelvic

Question 29

During sympathetic activation,________ occurs.

A)elevated heart rate
B)elevated blood pressure
C)sweating
D)elevated blood glucose
E)All of the answers are correct.

Question 30

Figure 16-1 ANS Pathway
Use Figure 16-1 to answer the following questions:
Identify the structure labeled "2."

A)ventral root
B)dorsal ramus
C)spinal nerve
D)ventral ramus
E)white ramus

Question 31

Postganglionic fibers that innervate targets in the body wall or thoracic cavity originate on neurons within

A)intramural ganglia.
B)collateral ganglia.
C)sympathetic chain ganglia.
D)suprarenal ganglia.
E)white rami.

Question 32

As the result of an accident,the white rami of spinal nerves T₁ and T₂ on the left side of Brad's body are severed.What organ(s)would you expect to be affected by this injury?

A)left pupil
B)right pupil
C)heart
D)both pupils
E)left pupil and heart

Question 33

Figure 16-1 ANS Pathway
Use Figure 16-1 to answer the following questions:
Identify the structure labeled "5."

A)gray ramus
B)dorsal ramus
C)spinal nerve
D)white ramus
E)ventral root

Question 34

A person is confronted by a dangerous dog.His heart begins to race and beat strongly,his pupils dilate,and his hairs stand up.These signs are the result of

A)sympathetic activation.
B)increased levels of epinephrine in the blood.
C)increased activity of autonomic centers in the hypothalamus.
D)the "fight or flight" response.
E)All of the answers are correct.

Question 35

Sympathetic nerves

A)provoke feelings of sympathy.
B)allow us to relax,rest,and recover.
C)contains short preganglionic fibers and longer postganglionic fibers.
D)control swallowing.
E)stimulate gastric secretion.

Question 36

Splanchnic nerves

A)originate from first-order neurons located in the upper five thoracic segments of the spinal cord.
B)innervate the viscera or internal organs.
C)control sympathetic function of structures in the thorax.
D)connect chain ganglia.
E)are formed of parasympathetic fibers.

Question 37

Each of the following effects is associated with the action of postganglionic sympathetic fibers except

A)increased sweat secretion.
B)reduced circulation to the skin.
C)decreased heart rate.
D)dilation of the pupils.
E)increased blood flow to skeletal muscles.

Question 38

Preganglionic fibers that innervate the collateral ganglia form the

A)suprarenal medulla.
B)celiac ganglia.
C)sympathetic chain ganglia.
D)inferior mesenteric ganglia.
E)splanchnic nerves.

Question 39

The celiac ganglia innervate which of the following?

A)liver
B)spleen
C)stomach
D)pancreas
E)All of the answers are correct.

Question 40

Figure 16-1 ANS Pathway
Use Figure 16-1 to answer the following questions:
Identify the structure labeled "6."

A)somatic motor neuron
B)preganglionic neuron
C)sensory neuron
D)ganglionic neuron
E)astrocyte

Question 41

Sympathomimetic drugs might be used to

A)decrease heart rate.
B)decrease blood pressure.
C)dilate airways.
D)increase gastric motility.
E)reduce blood sugar levels.

Question 42

Which of the following is not a parasympathetic ganglion?

A)ciliary
B)pterygopalatine
C)submandibular
D)otic
E)celiac

Question 43

Disorders involving the vagus nerve might cause

A)food to remain in your stomach longer.
B)a drop in blood pressure.
C)constriction of the pupils.
D)more saliva production.
E)All of the answers are correct.

Question 44

Preganglionic fibers of parasympathetic neurons are present in all of the following cranial nerves except

A)III.
B)VII.
C)IX.
D)X)
E)XII.

Question 45

Parasympathetic functions include all of the following,except

A)decrease in the rate of cardiac contraction.
B)constriction of the pupils.
C)dilation of the airways.
D)stimulation of urination.
E)stimulation of defecation.

Question 46

Postganglionic sympathetic axons can release the neurotransmitter ________ at their effector junctions.

A)acetylcholine
B)nitric oxide
C)norepinephrine
D)ACh
E)All of the answers are correct.

Question 47

An inhaler used to treat airway constriction in asthma or allergy might contain a drug that

A)activates β₁ adrenergic receptors.
B)activates β₂ adrenergic receptors.
C)activates muscarinic cholinergic receptors.
D)blocks β₂ adrenergic receptors.
E)activates β₂ adrenergic receptors or activates muscarinic cholinergic receptors.

Question 48

Drugs that have effects similar to those of sympathetic activation are called sympathomimetic drugs.Which of the following would you not expect to observe in a person who has taken a sympathomimetic drug?

A)sweating
B)increased heart rate
C)dilation of respiratory passages
D)decreased blood pressure
E)increased blood sugar level

Question 49

Most sympathetic effector junctions release norepinephrine but a significant number release acetylcholine instead.Which of these is an example of an organ of the cholinergic type?

A)the heart
B)a blood vessel in the skin
C)a sweat gland
D)the liver
E)the salivary glands

Question 50

Almost 75 percent of all parasympathetic outflow travels along the ________ nerve(s).

A)splanchnic
B)facial
C)vagus
D)glossopharyngeal
E)trigeminal

Question 51

Which of the following statements concerning the parasympathetic division of the autonomic nervous system is false?

A)Preganglionic neurons are located in the brain stem and sacral region of the spinal cord.
B)Ganglionic neurons are located in ganglia within or near to effectors.
C)Preganglionic fibers are relatively short and postganglionic fibers are relatively long.
D)The actions of the parasympathetic division are more localized than those of the sympathetic division.
E)The ganglionic neurons always release acetylcholine.

Question 52

The neurotransmitter ACH is

A)always excitatory when used in the synapses of the sympathetic nervous system.
B)secreted by the postganglionic nervous.
C)going to reduce the activity of the other neurotransmitter norepinephrine.
D)broken down by monoamine oxidase.
E)a chemical similar to the structure of adrenalin.

Question 53

Drugs that stimulate alpha receptors,causing constriction of peripheral vessels,are

A)sympathetic blocking agents.
B)sympathomimetic.
C)parasympathetic blocking agents.
D)parasympathomimetic.
E)autonomic blocking agents.

Question 54

Which of the following statements is true? The stimulation of beta-adrenergic receptors can lead to
1)an increase in metabolic activity.
2)stimulation of airway smooth muscle.
3)the breakdown of triglycerides within adipocytes.

A)1
B)2
C)3
D)1 and 3
E)1,2,and 3

Question 55

Drugs known as beta-blockers may be useful for treating

A)constipation.
B)diarrhea.
C)excessive salivation.
D)excessive heart rate.
E)prostate disorders.

Question 56

Stimulation of the beta receptors on heart muscle cells results in

A)the decrease in ATP production.
B)increased heart rate and force of contraction.
C)decreased force of contraction.
D)slower heart rate.
E)inhibition of the heart muscle.

Question 57

A certain drug decreases heart rate by blocking a receptor on cardiac pacemaker cells.This drug probably binds to ________ receptors.

A)nicotinic cholinergic
B)muscarinic cholinergic
C)alpha-1 adrenergic
D)alpha-2 adrenergic
E)beta-1 adrenergic

Question 58

Postganglionic fibers release neurotransmitter on peripheral effectors

A)at distinct synapses.
B)at pearl-like swellings called varicosities.
C)into capillaries within the target organ.
D)at the end plates.
E)at sympathetic chain ganglia.

Question 59

Which of the following statements about adrenergic receptors is true?

A)They are G proteins.
B)When activated,cAMP levels are affected.
C)Epinephrine activates both alpha and beta types.
D)Norepinephrine activates both alpha and beta types.
E)All of the answers are correct.

Question 60

The statement "It initiates contraction of urinary bladder smooth muscle" is

A)true only for the parasympathetic nervous system.
B)true only for the sympathetic nervous system.
C)true for both the parasympathetic and sympathetic nervous systems.
D)not true for either the parasympathetic or sympathetic nervous systems.
E)true only for the somatic nervous system.

Question 61

The statement "Its postganglionic axons always use acetylcholine as the neurotransmitter" is

A)true only for the parasympathetic nervous system.
B)true only for the sympathetic nervous system.
C)true for both the parasympathetic and sympathetic nervous systems.
D)not true for either the parasympathetic or sympathetic nervous systems.
E)true only for the somatic nervous system.

Question 62

Muscarinic receptors

A)are normally activated by acetylcholine.
B)are found mostly in autonomic ganglia.
C)always produce an excitatory response.
D)control sodium channels in the affected membrane.
E)are blocked by norepinephrine.

Question 63

The statement "Preganglionic axon terminals release acetylcholine" is

A)true only for the parasympathetic nervous system.
B)true only for the sympathetic nervous system.
C)true for both the parasympathetic and sympathetic nervous systems.
D)not true for either the parasympathetic or sympathetic nervous systems.
E)true only for the somatic nervous system.

Question 64

Damage to the glossopharyngeal nerve would likely cause

A)increase in heart rate.
B)problems in sexual arousal.
C)a reduction in saliva.
D)visual problems.
E)urine retention.

Question 65

Autonomic tone is an important aspect of ANS function because it

A)allows ANS neurons to be silent under normal conditions.
B)allows ANS neurons to increase activity on demand but not decrease their activity.
C)allows ANS neurons to decrease their activity on demand but not increase their activity.
D)allows ANS neurons to increase or decrease their activity,providing a range of control options.
E)provides for a narrow range of control options that keeps target tissues constantly active.

Question 66

Intramural ganglia in the digestive,urinary,and reproductive organs are innervated by the ________ nerves.

A)spinal
B)splanchnic
C)chain
D)pelvic
E)collateral

Question 67

A doctor places drops in the eyes to dilate the pupils for an examination.The type of drug that is used is a(n)________ drug.
1)sympathomimetic
2)parasympathomimetic
3)adrenergic activating
4)cholinergic activating

A)1,2
B)3
C)4
D)1,3
E)2,4

Question 68

Dual innervation refers to an organ receiving

A)two nerves from the spinal cord.
B)both autonomic and somatomotor nerves.
C)both sympathetic and parasympathetic innervation.
D)nerves from both the brain and the spinal cord.
E)both sensory and motor nerves.

Question 69

A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in

A)no change in vessel diameter.
B)a decrease in vessel diameter.
C)oscillation in vessel diameter.
D)a decrease in blood flow through the vessel.
E)an increase in blood flow through the vessel.

Question 70

Mary accidentally ate poison mushrooms that contain muscarine.What symptoms would you expect to observe?

A)diarrhea
B)salivation
C)very low heart rate
D)sweating
E)All of the answers are correct.

Question 71

Control of the diameter of the respiratory passages depends upon

A)sympathetic stimulation only.
B)parasympathetic stimulation only.
C)somatomotor stimulation only.
D)both parasympathetic and sympathetic levels of stimulation.
E)sensory receptors sensitive to changes in lung ventilation.

Question 72

Nicotinic receptors

A)respond to epinephrine.
B)respond to norepinephrine.
C)open chemically-gated sodium ion channels.
D)can be either excitatory or inhibitory in function.
E)are found at synaptic junctions of the sympathetic nervous system.

Question 73

A neuron with nicotinic receptors is exposed to acetylcholine.This will lead to

A)activation of chemically-gated ion channels.
B)excitation of the neuron.
C)entry of sodium ions into the neuron.
D)depolarization of the neuron.
E)All of the answers are correct.

Question 74

Sweat glands contain ________ receptors.

A)nicotinic cholinergic
B)muscarinic cholinergic
C)alpha
D)beta
E)adregeneric

Question 75

Parasympathetic stimulation

A)increases heart rate.
B)increases gastric motility.
C)causes sweat glands to secrete.
D)causes blood vessels in the skin to dilate.
E)causes the pupils to dilate.

Question 76

Drugs that block nicotinic receptors would be

A)sympathomimetic.
B)parasympathomimetic.
C)parasympathetic blocking agents.
D)sympathetic blocking agents.
E)autonomic blocking agents.

Question 77

The statement "It controls the diameter of the pupil" is

A)true only for the parasympathetic nervous system.
B)true only for the sympathetic nervous system.
C)true for both the parasympathetic and sympathetic nervous systems.
D)not true for either the parasympathetic or sympathetic nervous systems.
E)true only for the somatic nervous system.

Question 78

Which of the following provides preganglionic parasympathetic innervation to structures in the neck and in the thoracic and abdominopelvic cavities?

A)vagus nerves
B)sciatic nerves
C)glossopharyngeal nerves
D)pelvic nerves
E)cervicothoracocabdominopelvic nerves

Question 79

Sympathetic and parasympathetic fibers that innervate the heart pass through the

A)celiac plexus.
B)hypogastric plexus.
C)cardiac plexus.
D)sphenopalatine ganglia.
E)otic ganglia.

Question 80

Parasympathetic blocking agents can be useful in treating

A)heart failure.
B)high blood pressure.
C)urinary incontinence.
D)hyperactivity.
E)All of the answers are correct.