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Life, 4/e

Ricki Lewis, University of New York at Albany
Mariëlle Hoefnagels, University of Oklahoma
Douglas Gaffin, University of Oklahoma
Bruce Parker, Utah Valley State College

The Nervous System

Chapter Quiz


1	Which of the following is not a function of the nervous system?
		A)	receive sensory input
		B)	integration of sensory information
		C)	triggering a motor response
		D)	excretion


2	What portion of a neuron houses the nucleus and other organelles?
		A)	cell body
		B)	dendrites
		C)	axonal hillock
		D)	axon


3	A type of neuron known as a(n) ______________ connects one neuron to another within the central nervous system.
		A)	motor neuron
		B)	sensory neuron
		C)	interneuron
		D)	All of these are correct.


4	What is the condition of the neuron cell membrane while at resting potential?
		A)	polarized
		B)	slight negative charge inside the membrane
		C)	slight positive charge outside the membrane
		D)	All of these are correct.


5	Only certain ions can move across a membrane. The term used to describe this situation is ___________.
		A)	selectively permeable
		B)	permeable
		C)	impermeable
		D)	None of these is correct.


6	True or false. The hydrogen-potassium pump establishes resting potential in the neuron.
		A)	True
		B)	False


7	True or false. An action potential is an all-or-none phenomenon.
		A)	True
		B)	False


8	True or false. Signals can move in either direction along a neuron.
		A)	True
		B)	False


9	True or false. During saltatory conduction, the action potential jumps from one node of Ranvier to the next.
		A)	True
		B)	False


10	White matter in the brain and spinal cord is made up of __________.
		A)	myelinated fibers
		B)	myelinated cell bodies
		C)	unmyelinated fibers
		D)	unmyelinated cell bodies


11	Certain peptides act as ______________ that alter a neuron’s response to a neurotransmitter or block its release.
		A)	stimulators
		B)	neurotransmitters
		C)	neuromodulators
		D)	inhibitors


12	Nicotine stimulates the release of the neurotransmitter __________ which increases alertness.
		A)	GABA
		B)	dopamine
		C)	noradrenaline
		D)	serotonin


13	At the synapse, the neuron with embedded neurotransmitter receptors is the ___________.
		A)	postsynaptic neuron
		B)	presynaptic neuron
		C)	sensory neuron
		D)	unmyelinated neuron


14	Neurotransmitters are removed from a synapse by ____________.
		A)	enzymatic degradation
		B)	reuptake
		C)	chemical blocking
		D)	Both a and b are correct.


15	Inhibitory synapses ________________ the postsynaptic membrane.
		A)	depolarize
		B)	hyperpolarize
		C)	repolarize
		D)	None of these is correct.


16	True or false. It does not really matter in which end of an animal the nervous tissue concentrates.
		A)	True
		B)	False


17	In what group does a brain and nerve cord allow for complex behaviors and rudimentary learning?
		A)	cnidarians
		B)	arthropods
		C)	segmented worms
		D)	flatworms


18	The _________ nervous system stimulates skeletal muscle.
		A)	autonomic
		B)	somatic
		C)	sympathetic
		D)	parasympathetic


19	What part of the spinal cord sends information to the brain?
		A)	descending tracts
		B)	meninges
		C)	ascending tracts
		D)	All of these are correct.


20	The medulla controls all of the following except __________.
		A)	breathing
		B)	heart rate
		C)	blood pressure
		D)	temperature regulation


21	True or false. As messages leave or enter the brain they have to pass through the medulla. In the medulla, most signals cross from one side to the other.
		A)	True
		B)	False


22	Memories for the coordinated movements needed for sports form in the ___________.
		A)	cerebellum
		B)	medulla oblongata
		C)	hippocampus
		D)	amygdala


23	The biggest difference in brain size between different species of animals is the size of the ___________.
		A)	pons
		B)	medulla oblongata
		C)	hindbrain
		D)	None of these is correct.


24	True or false. The thalamus is a relay station for sensory input.
		A)	True
		B)	False


25	Whether you are asleep or awake depends on the amount of activity in the ____________.
		A)	hypothalamus
		B)	diencephalon
		C)	reticular activating system
		D)	pons


26	True or false. Each cerebral hemisphere has some of its own specific functions, yet the hemispheres work together.
		A)	True
		B)	False


27	What branch of the nervous system controls heart and breathing rates under normal conditions?
		A)	sympathetic branch of the autonomic nervous system
		B)	parasympathetic branch of the autonomic nervous system
		C)	somatic nervous system
		D)	None of these is correct.

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