Question 1

At a chemical synapse, the presynaptic and postsynaptic neurons touch and chemicals are exchanged through gap junctions.

Accepted Answer

A) True 
 B)False  False

Question 2

Sensory information processing as well as the direction of voluntary movements are carried out by the

Accepted Answer

A)  amygdala. 
B)  cerebrum. 
C)  cerebellum. 
D)  medulla. 
E)  hypothalamus. 
A)  amygdala. 
B)  cerebrum. 
C)  cerebellum. 
D)  medulla. 
E)  hypothalamus. B

Question 3

If a bone fragment resulting from a broken nose pushed against the olfactory (smell) nerve, triggering an action potential, the person would

Accepted Answer

A)  register the sensation as a smell. 
B)  lose her sense of smell. 
C)  register the sensation as a sound. 
D)  register the sensation as a visual stimulus. 
E)  not register the sensation at all. 
A)  register the sensation as a smell. 
B)  lose her sense of smell. 
C)  register the sensation as a sound. 
D)  register the sensation as a visual stimulus. 
E)  not register the sensation at all. A

Question 4

While walking barefoot along the beach, you step on a shard of glass and reflexively lift your injured foot. Which path did the reflex to lift your foot take?

Accepted Answer

A)  Motor nerve → sensory nerve → spinal cord → brain 
B)  Sensory nerve → motor nerve → spinal cord → brain 
C)  Sensory nerve → spinal cord → brain → spinal cord → motor nerve → effector 
D)  Sensory nerve → spinal cord → motor nerve → effector 
E)  Motor nerve → spinal cord → brain → spinal cord → sensory nerve → effector 
A)  Motor nerve → sensory nerve → spinal cord → brain 
B)  Sensory nerve → motor nerve → spinal cord → brain 
C)  Sensory nerve → spinal cord → brain → spinal cord → motor nerve → effector 
D)  Sensory nerve → spinal cord → motor nerve → effector 
E)  Motor nerve → spinal cord → brain → spinal cord → sensory nerve → effector

Question 5

Individuals diagnosed with Huntington?s disease exhibit abnormal involuntary movements due to deterioration of the__________ .

Accepted Answer

The answer of Individuals diagnosed with Huntington?s disease exhibit abnormal...

Question 6

Neurons release chemicals known as__________ into a synapse to convey signals to adjacent cells.

Accepted Answer

The answer of Neurons release chemicals known as__________ into a...

Question 7

A diffuse nerve net would be found in which of the following animals?

Accepted Answer

A)  Flatworm 
B)  Octopus 
C)  Insect 
D)  Human 
E)  Jellyfish 
A)  Flatworm 
B)  Octopus 
C)  Insect 
D)  Human 
E)  Jellyfish

Question 8

A(n) __________postsynaptic potential is initiated when neurotransmitter binding to receptor proteins causes the postsynaptic neuron to become less negative.

Accepted Answer

The answer of A(n) __________postsynaptic potential is initiated when neurotransmitter...

Question 9

Activity of the neurotransmitter acetylcholine is brief because it

Accepted Answer

A)  is pumped out of the synaptic cleft by the sodium-potassium pump. 
B)  is rapidly broken down by enzymes in the synaptic cleft. 
C)  is transported back into the presynaptic neuron. 
D)  ʺself-destructsʺ shortly after leaving the presynaptic neuron. 
E)  diffuses out of the synaptic cleft. 
A)  is pumped out of the synaptic cleft by the sodium-potassium pump. 
B)  is rapidly broken down by enzymes in the synaptic cleft. 
C)  is transported back into the presynaptic neuron. 
D)  ʺself-destructsʺ shortly after leaving the presynaptic neuron. 
E)  diffuses out of the synaptic cleft.

Question 10

The __________is a cluster of neurons that plays a role in wake-sleep cycles, muscle tone, emotions, and some reflexes.

Accepted Answer

The answer of The __________is a cluster of neurons that...

Question 11

Which portion of the neuron typically receives information?

Accepted Answer

A)  Cell body 
B)  Dendrite 
C)  Synaptic terminal 
D)  Axon 
E)  Glia 
A)  Cell body 
B)  Dendrite 
C)  Synaptic terminal 
D)  Axon 
E)  Glia

Question 12

When you hear a loud noise, you immediately turn your head and direct your eyes toward the sound. Which region of the brain directs this reflexive movement of your eyes?

Accepted Answer

A)  Hippocampus 
B)  Cerebrum 
C)  Midbrain 
D)  Pons 
E)  Hindbrain 
A)  Hippocampus 
B)  Cerebrum 
C)  Midbrain 
D)  Pons 
E)  Hindbrain

Question 13

Marta has been having terrible headaches. Now her hand feels like it is being gripped even though it is not actually being touched. Sheʹs also having a hard time interpreting sensations. For example, she blistered her hand on a hot pan because she interpreted the heat sensation as cold. Which portion of Martaʹs brain is most likely damaged?

Accepted Answer

A)  Temporal lobe 
B)  Hippocampus 
C)  Hypothalamus 
D)  Parietal lobe 
E)  Frontal lobe 
A)  Temporal lobe 
B)  Hippocampus 
C)  Hypothalamus 
D)  Parietal lobe 
E)  Frontal lobe

Question 14

Nicotine affects neurotransmission by causing more action potentials in the presynaptic neuron and by causing more neurotransmitter to be released per vesicle. This means your postsynaptic neurons

Accepted Answer

A)  are uncoordinated in the presence of nicotine. 
B)  are unaffected by nicotine. 
C)  are more easily stimulated in the presence of nicotine. 
D)  cannot be stimulated at all in the presence of nicotine. 
E)  are harder than normal to stimulate in the presence of nicotine. 
A)  are uncoordinated in the presence of nicotine. 
B)  are unaffected by nicotine. 
C)  are more easily stimulated in the presence of nicotine. 
D)  cannot be stimulated at all in the presence of nicotine. 
E)  are harder than normal to stimulate in the presence of nicotine.

Question 15

-What type of nervous system does the flatworm exhibit?

Accepted Answer

A)  The flatworm doesn?t have a nervous system 
B)  Centralized nervous system 
C)  Peripheral nervous system 
D)  Somatic nervous system 
E)  Diffuse nervous system 
A)  The flatworm doesn?t have a nervous system 
B)  Centralized nervous system 
C)  Peripheral nervous system 
D)  Somatic nervous system 
E)  Diffuse nervous system

Question 16

Sensations of fear, pleasure, and sexual arousal are produced by the

Accepted Answer

A)  amygdala. 
B)  cerebral cortex. 
C)  hypothalamus. 
D)  reticular formation. 
E)  medulla. 
A)  amygdala. 
B)  cerebral cortex. 
C)  hypothalamus. 
D)  reticular formation. 
E)  medulla.

Question 17

Interneurons connect sensory and motor neurons.

Accepted Answer

A) True 
 B)False

Question 18

Sympathetic and parasympathetic nervous system responses usually oppose each other.

Accepted Answer

A) True 
 B)False

Question 19

The integration of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs) received by a postsynaptic neuron determines its activity.

Accepted Answer

A) True 
 B)False

Question 20

Damage to the right frontal cortex may produce paralysis on the__________side of the body.

Accepted Answer

A)  right 
B)  nondominant 
C)  left 
D)  dominant 
A)  right 
B)  nondominant 
C)  left 
D)  dominant

Exam 39: The Nervous System

At a chemical synapse, the presynaptic and postsynaptic neurons touch and chemicals are exchanged through gap junctions.

Sensory information processing as well as the direction of voluntary movements are carried out by the

If a bone fragment resulting from a broken nose pushed against the olfactory (smell) nerve, triggering an action potential, the person would

While walking barefoot along the beach, you step on a shard of glass and reflexively lift your injured foot. Which path did the reflex to lift your foot take?

Individuals diagnosed with Huntington?s disease exhibit abnormal involuntary movements due to deterioration of the__________ .

Neurons release chemicals known as__________ into a synapse to convey signals to adjacent cells.

A diffuse nerve net would be found in which of the following animals?

A(n) __________postsynaptic potential is initiated when neurotransmitter binding to receptor proteins causes the postsynaptic neuron to become less negative.

Activity of the neurotransmitter acetylcholine is brief because it

The __________is a cluster of neurons that plays a role in wake-sleep cycles, muscle tone, emotions, and some reflexes.

Which portion of the neuron typically receives information?

When you hear a loud noise, you immediately turn your head and direct your eyes toward the sound. Which region of the brain directs this reflexive movement of your eyes?

Nicotine affects neurotransmission by causing more action potentials in the presynaptic neuron and by causing more neurotransmitter to be released per vesicle. This means your postsynaptic neurons

-What type of nervous system does the flatworm exhibit?

Sensations of fear, pleasure, and sexual arousal are produced by the

Interneurons connect sensory and motor neurons.

Sympathetic and parasympathetic nervous system responses usually oppose each other.

The integration of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs) received by a postsynaptic neuron determines its activity.

Damage to the right frontal cortex may produce paralysis on the__________side of the body.

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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