Question 1

What is detected with the general senses?

Accepted Answer

A)  the sound of someone's voice 
B)  a tap on the shoulder 
C)  the smell of a campfire 
D)  the taste of a new food 
E)  the colors of a painting 
A)  the sound of someone's voice 
B)  a tap on the shoulder 
C)  the smell of a campfire 
D)  the taste of a new food 
E)  the colors of a painting B

Question 2

In the "Investigating Life" section at the end of the chapter it is shown that toxins produced by scorpions cause sodium ion channels to become stuck open.These toxins cause pain by

Accepted Answer

A)  depolarizing motor neurons. 
B)  polarizing sensory neurons. 
C)  polarizing motor neurons. 
D)  polarizing interneurons. 
E)  depolarizing sensory neurons. 
A)  depolarizing motor neurons. 
B)  polarizing sensory neurons. 
C)  polarizing motor neurons. 
D)  polarizing interneurons. 
E)  depolarizing sensory neurons. E

Question 3

In conductive deafness,the middle ear fails to move sound to the inner ear.By amplifying sounds in the auditory canal,the hearing aid moves the ________ more than normal,helping the person hear more clearly.

Accepted Answer

A)  cochlea 
B)  eardrum 
C)  round window 
D)  utricle 
E)  auditory nerve 
A)  cochlea 
B)  eardrum 
C)  round window 
D)  utricle 
E)  auditory nerve B

Question 4

You are lying on a sand dune looking over the water, listening to the waves, and enjoying the feel of the sun and wind on your skin. You also smell the salty ocean air and seaweed that has washed ashore.
-When you smell the salty air and seaweed,what is being activated?

Accepted Answer

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

Question 5

The part of the brain that controls the qualities of what we consider the "mind" is the

Accepted Answer

A)  cerebellum. 
B)  hypothalamus. 
C)  cerebrum. 
D)  medulla oblongata. 
E)  pons. 
A)  cerebellum. 
B)  hypothalamus. 
C)  cerebrum. 
D)  medulla oblongata. 
E)  pons.

Question 6

The part of the neuron that is usually highly branched and receives input from other neurons is the

Accepted Answer

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

Question 7

Bone-conduction aids transmit sound waves directly to the oval window.This would bypass the

Accepted Answer

A)  inner ear. 
B)  auditory nerve. 
C)  round window. 
D)  middle ear. 
E)  cochlea. 
A)  inner ear. 
B)  auditory nerve. 
C)  round window. 
D)  middle ear. 
E)  cochlea.

Question 8

If you were using electrodes and chemical tests to find a resting neuron,you would look for a neuron in which

Accepted Answer

A)  active transport is not occurring. 
B)  sodium ions are more concentrated inside the cell than outside. 
C)  very little metabolism is taking place. 
D)  the inside of a neuron is positively charged as compared to the outside. 
E)  potassium ions are more concentrated inside the cell than outside. 
A)  active transport is not occurring. 
B)  sodium ions are more concentrated inside the cell than outside. 
C)  very little metabolism is taking place. 
D)  the inside of a neuron is positively charged as compared to the outside. 
E)  potassium ions are more concentrated inside the cell than outside.

Question 9

Neurotransmitters released from a "sending" cell must travel across a tiny space called a synaptic cleft.

Accepted Answer

A) True 
 B)False

Question 10

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)  None of the answer choices 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)  None of the answer choices is correct.

Question 11

Unmyelinated regions are critical parts of synapses.

Accepted Answer

A) True 
 B)False

Question 12

What 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 13

A phenomenon in which sensations become less noticeable with prolonged exposure is called

Accepted Answer

A)  gradient adaptation. 
B)  an action potential. 
C)  a graded potential. 
D)  radiating adaptation. 
E)  sensory adaptation. 
A)  gradient adaptation. 
B)  an action potential. 
C)  a graded potential. 
D)  radiating adaptation. 
E)  sensory adaptation.

Question 14

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 15

The nervous system controls

Accepted Answer

A)  conscious decisions, like what shirt to wear. 
B)  subconscious reactions, like burping. 
C)  emotional reactions, like crying. 
D)  the reception of environmental stimuli, like hearing a loud sound. 
E)  All of the answer choices are correct. 
A)  conscious decisions, like what shirt to wear. 
B)  subconscious reactions, like burping. 
C)  emotional reactions, like crying. 
D)  the reception of environmental stimuli, like hearing a loud sound. 
E)  All of the answer choices are correct.

Question 16

The size of the opening for light coming into the eye is regulated by the

Accepted Answer

A)  cornea. 
B)  pupil. 
C)  iris. 
D)  cone. 
E)  lens. 
A)  cornea. 
B)  pupil. 
C)  iris. 
D)  cone. 
E)  lens.

Question 17

Tetrodotoxin is a heat-stable molecule produced by puffer fish that blocks the entry of sodium ions into neurons. About 10-45 minutes after ingestion of tetrodotoxin, tingling of the tongue and inner surface of the mouth begins. An ascending paralysis develops, and death can occur within 6-24 hours, after respiratory muscle paralysis.
-What does the puffer fish neurotoxin tetrodotoxin directly inhibit?

Accepted Answer

A)  proteins involved in active transport 
B)  channel proteins involved in osmosis 
C)  proteins involved in ATP synthesis 
D)  channel proteins involved in diffusion 
E)  relaxation of muscles 
A)  proteins involved in active transport 
B)  channel proteins involved in osmosis 
C)  proteins involved in ATP synthesis 
D)  channel proteins involved in diffusion 
E)  relaxation of muscles

Question 18

Which is not controlled by the nervous system?

Accepted Answer

A)  breathing 
B)  heartbeat 
C)  removing your hand from a hot surface 
D)  removing your hand from a cold surface 
E)  diffusion of water into cells 
A)  breathing 
B)  heartbeat 
C)  removing your hand from a hot surface 
D)  removing your hand from a cold surface 
E)  diffusion of water into cells

Question 19

You are lying on a sand dune looking over the water, listening to the waves, and enjoying the feel of the sun and wind on your skin. You also smell the salty ocean air and seaweed that has washed ashore.
-When you look at the water,what is being activated?

Accepted Answer

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

Question 20

The part of the central nervous system that conducts information to and from the brain is the

Accepted Answer

A)  motor neuron. 
B)  spinal cord. 
C)  sensory neuron. 
D)  cerebellum. 
E)  medulla oblongata. 
A)  motor neuron. 
B)  spinal cord. 
C)  sensory neuron. 
D)  cerebellum. 
E)  medulla oblongata.

Exam 24: The Nervous System and the Senses

What is detected with the general senses?

In the "Investigating Life" section at the end of the chapter it is shown that toxins produced by scorpions cause sodium ion channels to become stuck open.These toxins cause pain by

In conductive deafness,the middle ear fails to move sound to the inner ear.By amplifying sounds in the auditory canal,the hearing aid moves the ________ more than normal,helping the person hear more clearly.

You are lying on a sand dune looking over the water, listening to the waves, and enjoying the feel of the sun and wind on your skin. You also smell the salty ocean air and seaweed that has washed ashore. -When you smell the salty air and seaweed,what is being activated?

The part of the brain that controls the qualities of what we consider the "mind" is the

The part of the neuron that is usually highly branched and receives input from other neurons is the

Bone-conduction aids transmit sound waves directly to the oval window.This would bypass the

If you were using electrodes and chemical tests to find a resting neuron,you would look for a neuron in which

Neurotransmitters released from a "sending" cell must travel across a tiny space called a synaptic cleft.

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?

Unmyelinated regions are critical parts of synapses.

What best describes how a neuron fires?

A phenomenon in which sensations become less noticeable with prolonged exposure is called

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

The nervous system controls

The size of the opening for light coming into the eye is regulated by the

Which is not controlled by the nervous system?

You are lying on a sand dune looking over the water, listening to the waves, and enjoying the feel of the sun and wind on your skin. You also smell the salty ocean air and seaweed that has washed ashore. -When you look at the water,what is being activated?

The part of the central nervous system that conducts information to and from the brain is the

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