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1403- Homework Assignment 9

front 1

Which of the following comparisons of the autonomic nervous system (ANS) and the somatic nervous system (SNS) is not true?

.the SNS carries information from the special senses

the ANS has sensory receptors called interoceptors

tissues of the ANS can function even if their nerve supply is damaged

the SNS contains motor neurons which are excitatory and inhibitory

angina pectoris is an example of input from the ANS

back 1

the SNS contains motor neurons which are excitatory and inhibitory

front 2

If the pathway shown in the diagram is a sympathetic division pathway, which neurotransmitter acts at the effector?

Serotonin

Norepinephrine

Acetylcholine

Epinephrine

Dopamine

back 2

Norepinephrine

front 3

Which would be found in the anterior root of a thoracic spinal nerve?

somatic motor axons

somatic sensory axons

sympathetic postganglionic axons

parasympathetic preganglionic axons

back 3

somatic motor axons

front 4

The cell bodies of sympathetic preganglionic neurons are located in the

terminal ganglia

visceral organs

spinal cord

sympathetic trunk ganglia

back 4

spinal cord

front 5

Dual innervation describes the situation when effectors are controlled by only one division of the autonomic nervous system.

True

False

back 5

False

front 6

All preganglionic neurons are cholinergic.

True

False

back 6

False

front 7

Which of the following lists the components of an autonomic reflex arc in the proper sequence of activation?

receptor – sensory neuron – motor neuron – effector – integrating center

receptor – sensory neuron – integrating center – motor neuron – effector

receptor – motor neuron – integrating center – sensory neuron – effector

effector – sensory neuron – integrating center – motor neuron – receptor

integrating center – receptor – sensory neuron – motor neuron – effector

SHOW ANSWER

back 7

receptor – sensory neuron – integrating center – motor neuron – effector

front 8

This figure shows

1. two corticospinal pathway
2. nervous pathways for voluntary control of skeletal muscles
3 nervous pathways for pain and temperature sensations

1 only

2 only

3 only

1 and 2 are correct

1 and 3 are correct

back 8

1 and 2 are correct

front 9

Damage to upper motor neurons results in flaccid paralysis and a loss of reflexes on the same side of the body as the injury.

back 9

False

front 10

The corticobulbar tracts convey nerve impulses that control movements of the

stomach and intestine

heart

arms and legs

head and neck

back 10

head and neck

front 11

The human-type figure resting on the precentral gyrus tells us that

more cortical neurons are specialized for hand movement than for foot movement

control of facial muscles requires a large number of cortical neurons

relatively little cortical material is devoted to controlling the muscles of the trunk

all of these choices are correct

none of these choices are correct

back 11

all of these choices are correct

front 12

Which of the following type of neurons have their cell bodies in the spinal cord or brain stem and their axons terminating in neuromuscular junctions?

lower motor neurons

somatic sensory neurons

upper motor neurons

preganglionic autonomic neurons

postganglionic autonomic neurons

back 12

lower motor neurons