Question 1

What is transported from a neuron,through the synaptic cleft,and received by the receptors of another cell (shown in blue in the figure) ?

Accepted Answer

A)  sodium ions
B)  potassium ions
C)  neurotransmitters
D)  oxygen molecules
E)  neurogliaF) C) and E)
G) A) and B)

Question 2

The type of neuron that connects one neuron to another within the central nervous system is the

Accepted Answer

A)  synaptic neuron.
B)  interneuron.
C)  sensory neuron.
D)  motor neuron.
E)  neuroglia.F) B) and D)
G) A) and B)

Question 3

The type of neuron that conducts its message from the central nervous system toward an effector is the

Accepted Answer

A)  synaptic neuron.
B)  interneuron.
C)  motor neuron.
D)  sensory neuron.
E)  neuroglia.F) A) and E)
G) A) and C)

Question 4

The condition that develops when GABA levels in the brain are deficient is

Accepted Answer

A)  epilepsy.
B)  insomnia.
C)  Huntington disease.
D)  Alzheimer disease.
E)  Parkinson diseasE.F) A) and D)
G) C) and E)

Question 5

ATP is used to power the creation of a neuron's resting potential.

Accepted Answer

A) True 
 B)False

Question 6

A mutant fruit fly with poor nerve transmission proves to have poor reception of signals sent by one neuron to another.This is probably due to mutanty dendrite formation.

Accepted Answer

A) True 
 B)False

Question 7

The nervous tissue that consists of myelinated axons transmitting information throughout the central nervous system is the

Accepted Answer

A)  white reflex.
B)  grey matter.
C)  red reflex.
D)  red matter.
E)  white matter.F) A) and B)
G) A) and C)

Question 8

Drugs called selective serotonin reuptake inhibitors (SSRIs) block reuptake of serotonin and are used to treat depression.Which of the following would occur in a patient given a SSRI?

Accepted Answer

A)  Serotonin levels would decrease in the synapse.
B)  Serotonin levels would increase in the synapse.
C)  More serotonin would be released by the neuron.
D)  Less serotonin would be released by the neuron.
E)  No answer is correct.F) C) and D)
G) All of the above

Question 9

The condition that develops when acetylcholine levels in the brain are deficient is

Accepted Answer

A)  epilepsy.
B)  insomnia.
C)  Parkinson disease.
D)  Huntington disease.
E)  Alzheimer diseasE.F) A) and B)
G) A) and C)

Question 10

A threshold potential is like a tipping point past that an action potential starts.

Accepted Answer

A) True 
 B)False

Question 11

The reason that we can tell light from sound is because different neurons transmit these different stimuli.

Accepted Answer

A) True 
 B)False

Question 12

The layer of the wall of the eye that contains blood vessels that supply nutrients to the sheet of photoreceptors at the back of the eye and becomes the iris at the front of the eye is the

Accepted Answer

A)  sclerA.
B)  retina.
C)  vitreous humor.
D)  aqueous humor.
E)  choroid.F) B) and C)
G) B) and D)

Question 13

The part of the neuron that is usually a single long extension that conducts an impulse to a muscle or another neuron is the

Accepted Answer

A)  synapse.
B)  cell body.
C)  axon.
D)  dendrite.
E)  myelin sheath.F) A) and C)
G) B) and E)

Question 14

In humans,which is used primarily to detect sharp blows and excessive heat?

Accepted Answer

A)  mechanoreceptor
B)  chemoreceptor
C)  photoreceptor
D)  thermoreceptor
E)  pain receptorF) A) and E)
G) B) and D)

Question 15

Which best describes how a neuron fires?

Accepted Answer

A)  Na+ ions cross the plasma membrane initiating a wave that travels down the axon.
B)  Vesicles carry neurotransmitters from the nucleus to the other end of the neuron.
C)  Na+ ions enter one end of the neuron and diffuse to the other end down the axon.
D)  Neurotransmitters enter one end of the neuron and diffuse to the other end down the axon.
E)  Neurotransmitters cross the plasma membrane creating a wave that travels down the axon.F) A) and D)
G) B) and C)

Question 16

If you wanted to stop transmission from one neuron to another,you would want to destroy all

Accepted Answer

A)  neurotransmitters.
B)  action potentials.
C)  resting potentials.
D)  threshold potentials.
E)  myelin sheath.F) None of the above
G) B) and E)

Question 17

A neuron fires when

Accepted Answer

A)  Na+ ions move against their concentration gradient spontaneously.
B)  Na+ ions are actively pumped down their concentration gradient.
C)  Na+ ions move down their concentration gradient spontaneously.
D)  Na+ ions are actively pumped against their concentration gradient.
E)  No answer is correct.F) A) and B)
G) B) and E)

Question 18

In humans,if you wanted to eliminate the ability to smell dung,which type of receptor should be changed?

Accepted Answer

A)  photoreceptor
B)  chemoreceptor
C)  thermoreceptor
D)  pain receptor
E)  mechanoreceptorF) A) and B)
G) B) and C)

Question 19

A chemical that travels from a sending neuron to a receiving neuron is called a(n)

Accepted Answer

A)  synaptic cleft.
B)  action potential.
C)  hormone.
D)  neurotransmitter.
E)  neurotoxin.F) A) and C)
G) D) and E)

Question 20

The nervous tissue of the central nervous system that consists of neuron cell bodies and synapses is the

Accepted Answer

A)  white matter.
B)  white reflex.
C)  grey matter.
D)  grey reflex.
E)  red matter.F) A) and B)
G) None of the above

Exam 24: The Nervous System and the Senses

The nervous tissue of the central nervous system that consists of neuron cell bodies and synapses is the

Correct AnswerverifiedShow Answer

The type of neuron that conducts its message from the central nervous system toward an effector is the

Correct AnswerverifiedShow Answer

In humans,which is used primarily to detect sharp blows and excessive heat?

Correct AnswerverifiedShow Answer

In humans,if you wanted to eliminate the ability to smell dung,which type of receptor should be changed?

Correct AnswerverifiedShow Answer

Drugs called selective serotonin reuptake inhibitors (SSRIs) block reuptake of serotonin and are used to treat depression.Which of the following would occur in a patient given a SSRI?

Correct AnswerverifiedShow Answer

Which best describes how a neuron fires?

Correct AnswerverifiedShow Answer

The condition that develops when GABA levels in the brain are deficient is

Correct AnswerverifiedShow Answer

ATP is used to power the creation of a neuron's resting potential.

Correct AnswerverifiedShow Answer

The layer of the wall of the eye that contains blood vessels that supply nutrients to the sheet of photoreceptors at the back of the eye and becomes the iris at the front of the eye is the

Correct AnswerverifiedShow Answer

The reason that we can tell light from sound is because different neurons transmit these different stimuli.

Correct AnswerverifiedShow Answer

The nervous tissue that consists of myelinated axons transmitting information throughout the central nervous system is the

Correct AnswerverifiedShow Answer

A neuron fires when

Correct AnswerverifiedShow Answer

A threshold potential is like a tipping point past that an action potential starts.

Correct AnswerverifiedShow Answer

If you wanted to stop transmission from one neuron to another,you would want to destroy all

Correct AnswerverifiedShow Answer

A chemical that travels from a sending neuron to a receiving neuron is called a(n)

Correct AnswerverifiedShow Answer

What is transported from a neuron,through the synaptic cleft,and received by the receptors of another cell (shown in blue in the figure) ?

Correct AnswerverifiedShow Answer

The part of the neuron that is usually a single long extension that conducts an impulse to a muscle or another neuron is the

Correct AnswerverifiedShow Answer

A mutant fruit fly with poor nerve transmission proves to have poor reception of signals sent by one neuron to another.This is probably due to mutanty dendrite formation.

Correct AnswerverifiedShow Answer

The type of neuron that connects one neuron to another within the central nervous system is the

Correct AnswerverifiedShow Answer

The condition that develops when acetylcholine levels in the brain are deficient is

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified