Question 1

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

Question 2

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

Question 3

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

Question 4

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. 
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.

Question 5

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

Question 6

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. 
A) neurotransmitters. 
B) action potentials. 
C) resting potentials. 
D) threshold potentials. 
E) myelin sheath.

Question 7

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 8

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

Accepted Answer

A) True 
 B)False

Question 9

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. 
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.

Question 10

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. 
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.

Question 11

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

Question 12

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 receptor 
A) mechanoreceptor 
B) chemoreceptor 
C) photoreceptor 
D) thermoreceptor 
E) pain receptor

Question 13

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

Question 14

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

Question 15

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

Question 16

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) mechanoreceptor 
A) photoreceptor 
B) chemoreceptor 
C) thermoreceptor 
D) pain receptor 
E) mechanoreceptor

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

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

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

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) neuroglia 
A) sodium ions 
B) potassium ions 
C) neurotransmitters 
D) oxygen molecules 
E) neuroglia

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

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

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

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?

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

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

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.

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

A neuron fires when

Which best describes how a neuron fires?

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

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

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

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

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

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

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

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

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

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

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