Question 1

Which statement is NOT true about the cells of the nervous system?

Accepted Answer

A) A neuron can have only one axon. 
B) A neuroglial cell supports or protects a neuron. 
C) There may be multiple dendrites on a single neuron. 
D) A myelin sheath is a white insulating layer that covers many axons. 
E) A dendrite is the part of the neuron that carries an electrical impulse away from the cell body. 
A) A neuron can have only one axon. 
B) A neuroglial cell supports or protects a neuron. 
C) There may be multiple dendrites on a single neuron. 
D) A myelin sheath is a white insulating layer that covers many axons. 
E) A dendrite is the part of the neuron that carries an electrical impulse away from the cell body.

Question 2

Identify what happens when the doctor hits your knee cap with the rubber hammer during your annual physical.

Accepted Answer

A) The stimulus travels down the axon of your sensory neuron,through the dorsal root ganglion,is transmitted through the dendrites of the sensory neuron to the interneuron.From here it enters the cell body of the motor neuron and travels down the ventral root axon of the motor neuron to stimulate the effector. 
B) The stimulus travels down the axon of your sensory neuron,through the ventral root ganglion,is transmitted through the dendrites of the sensory neuron to the interneuron.From here it enters the cell body of the motor neuron and travels down the dorsal root axon of the motor neuron to stimulate the effector. 
C) The stimulus travels down the axon of your motor neuron,through the dorsal root ganglion,is transmitted through the dendrites of the sensory neuron to the interneuron.From here it enters the cell body of the motor neuron and travels down the ventral root axon of the sensory neuron to stimulate the effector. 
D) The stimulus travels down the axon of your sensory neuron,through the dorsal root ganglion,is transmitted through the dendrites of the sensory neuron to the interneuron.From here it enters the cell body of the motor neuron and travels down the ventral root axon of the motor neuron to stimulate the receptor. 
E) The stimulus travels down the dendrite of your sensory neuron,through the dorsal root ganglion,is transmitted through the axons of the sensory neuron to the interneuron.From here it enters the cell body of the motor neuron and travels down the ventral root axon of the motor neuron to stimulate the effector. 
A) The stimulus travels down the axon of your sensory neuron,through the dorsal root ganglion,is transmitted through the dendrites of the sensory neuron to the interneuron.From here it enters the cell body of the motor neuron and travels down the ventral root axon of the motor neuron to stimulate the effector. 
B) The stimulus travels down the axon of your sensory neuron,through the ventral root ganglion,is transmitted through the dendrites of the sensory neuron to the interneuron.From here it enters the cell body of the motor neuron and travels down the dorsal root axon of the motor neuron to stimulate the effector. 
C) The stimulus travels down the axon of your motor neuron,through the dorsal root ganglion,is transmitted through the dendrites of the sensory neuron to the interneuron.From here it enters the cell body of the motor neuron and travels down the ventral root axon of the sensory neuron to stimulate the effector. 
D) The stimulus travels down the axon of your sensory neuron,through the dorsal root ganglion,is transmitted through the dendrites of the sensory neuron to the interneuron.From here it enters the cell body of the motor neuron and travels down the ventral root axon of the motor neuron to stimulate the receptor. 
E) The stimulus travels down the dendrite of your sensory neuron,through the dorsal root ganglion,is transmitted through the axons of the sensory neuron to the interneuron.From here it enters the cell body of the motor neuron and travels down the ventral root axon of the motor neuron to stimulate the effector.

Question 3

At rest,the inside of the neuron is

Accepted Answer

A) negatively charged. 
B) positively charged. 
C) neutral,or equal to the exterior charge. 
D) None of the choices are correct,since neurons are never at rest. 
A) negatively charged. 
B) positively charged. 
C) neutral,or equal to the exterior charge. 
D) None of the choices are correct,since neurons are never at rest.

Question 4

Examine the picture to answer the following questions and identify the labeled structures.   A: ________
B: ________
C: ________
D: ________
E: ________
F: ________
G: ________
H: Is the neuron pictured a sensory,association or motor neuron? What is its function?
I: Is the neuron multipolar or unipolar? Explain your answer.

Accepted Answer

A: cell body B: dendrite C: myelin sheat

Question 5

What happens if an insect is sprayed with a common insecticide that destroys the ability of acetylcholinesterase to recycle acetylcholine?

Accepted Answer

A) The lack of recycled acetylcholine brings cell metabolism to a halt. 
B) The insect loses control of body functions as nerve impulses flow continuously. 
C) This prevents the synapse from restoring its ability to "reset" itself for the next impulse. 
D) All of the above are correct. 
E) The synapse is prevented from restoring its ability to "reset" itself for the next impulse and the insect loses control of body functions as nerve impulses flow continuously. 
A) The lack of recycled acetylcholine brings cell metabolism to a halt. 
B) The insect loses control of body functions as nerve impulses flow continuously. 
C) This prevents the synapse from restoring its ability to "reset" itself for the next impulse. 
D) All of the above are correct. 
E) The synapse is prevented from restoring its ability to "reset" itself for the next impulse and the insect loses control of body functions as nerve impulses flow continuously.

Question 6

Some memories are emotionally charged because the amygdala triggers associations between fear and sensory information.

Accepted Answer

A) True 
 B)False

Question 7

In humans,the central nervous system consists of the ________,which is housed in the ________ and the ________,which is housed in the ________.

Accepted Answer

A) peripheral nervous system; limbs; brain; skull 
B) brain; skull; spinal cord; vertebral column 
C) spinal cord; vertebral column; sensory neurons; limbs 
D) brain; vertebral column; spinal cord; skull 
A) peripheral nervous system; limbs; brain; skull 
B) brain; skull; spinal cord; vertebral column 
C) spinal cord; vertebral column; sensory neurons; limbs 
D) brain; vertebral column; spinal cord; skull

Question 8

The functional units of the nervous system are

Accepted Answer

A) neuromodulators. 
B) nerve nets. 
C) neuroglia. 
D) neurons. 
A) neuromodulators. 
B) nerve nets. 
C) neuroglia. 
D) neurons.

Question 9

The spinal cord allows for reflex actions to be relayed from the stimulus to the brain along the tracts of unmyelinated white matter.

Accepted Answer

A) True 
 B)False

Question 10

The enzyme that breaks down acetylcholine within the synaptic cleft is

Accepted Answer

A) acetylcholinesterase. 
B) monoamine oxidase. 
C) GABA. 
D) lipase. 
E) maltase. 
A) acetylcholinesterase. 
B) monoamine oxidase. 
C) GABA. 
D) lipase. 
E) maltase.

Question 11

An animal with a brain and a single ventral solid nerve cord is the

Accepted Answer

A) earthworm. 
B) cat. 
C) hydra. 
D) octopus. 
E) planarian. 
A) earthworm. 
B) cat. 
C) hydra. 
D) octopus. 
E) planarian.

Question 12

The peripheral nervous system consists of

Accepted Answer

A) nerves in the entire nervous system. 
B) ganglia. 
C) nerves and ganglia that lie outside the CNS. 
D) the brain and spinal cord. 
E) the brain,spinal cord,and nerves. 
A) nerves in the entire nervous system. 
B) ganglia. 
C) nerves and ganglia that lie outside the CNS. 
D) the brain and spinal cord. 
E) the brain,spinal cord,and nerves.

Question 13

Information gathering from the environment by a vertebrate is aided by which of the following?

Accepted Answer

A) paired eyes,ears,and olfactory structures 
B) cephalization 
C) bilateral symmetry with a vast increase in the number of neurons 
D) All of the choices are information gathering aids. 
A) paired eyes,ears,and olfactory structures 
B) cephalization 
C) bilateral symmetry with a vast increase in the number of neurons 
D) All of the choices are information gathering aids.

Question 14

Which part of the brain contains centers for the heartbeat and respiration?

Accepted Answer

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

Question 15

Which of the following features is NOT associated with Alzheimer's disease?

Accepted Answer

A) A loss of reasoning and memory. 
B) Plaques accumulate along the axons of the neurons in the brain. 
C) Neurofibrillary tangles surround the nucleus of the neural cells. 
D) The most common cause of dementia in older adults. 
E) All of these are features of Alzheimer's disease. 
A) A loss of reasoning and memory. 
B) Plaques accumulate along the axons of the neurons in the brain. 
C) Neurofibrillary tangles surround the nucleus of the neural cells. 
D) The most common cause of dementia in older adults. 
E) All of these are features of Alzheimer's disease.

Exam 37: Neurons and Nervous Systems

Which statement is NOT true about the cells of the nervous system?

Identify what happens when the doctor hits your knee cap with the rubber hammer during your annual physical.

At rest,the inside of the neuron is

What happens if an insect is sprayed with a common insecticide that destroys the ability of acetylcholinesterase to recycle acetylcholine?

Some memories are emotionally charged because the amygdala triggers associations between fear and sensory information.

In humans,the central nervous system consists of the ________,which is housed in the ________ and the ________,which is housed in the ________.

The functional units of the nervous system are

The spinal cord allows for reflex actions to be relayed from the stimulus to the brain along the tracts of unmyelinated white matter.

The enzyme that breaks down acetylcholine within the synaptic cleft is

An animal with a brain and a single ventral solid nerve cord is the

The peripheral nervous system consists of

Information gathering from the environment by a vertebrate is aided by which of the following?

Which part of the brain contains centers for the heartbeat and respiration?

Which of the following features is NOT associated with Alzheimer's disease?

A View of Life

Basic Chemistry

The Chemistry of Organic Molecules

Cell Structure and Function

Membrane Structure and Function

Metabolism: Energy and Enzymes

Photosynthesis

Cellular Respiration

The Cell Cycle and Cellular Reproduction

Meiosis and Sexual Reproduction

Mendelian Patterns of Inheritance

Molecular Biology of the Gene

Regulation of Gene Expression

Biotechnology and Genomics

Darwin and Evolution

How Populations Evolve

Speciation and Macroevolution

Origin and History of Life

Taxonomy,systematics,and Phylogeny

Viruses,bacteria,and Archaea

Protist Evolution and Diversity

Fungi Evolution and Diversity

Plant Evolution and Diversity

Flowering Plants: Structure and Organization

Flowering Plants: Nutrition and Transport

Flowering Plants: Control of Growth Responses

Flowering Plants: Reproduction

Invertebrate Evolution

Vertebrate Evolution

Human Evolution

Animal Organization and Homeostasis

Circulation and Cardiovascular Systems

The Lymphatic and Immune Systems

Digestive Systems and Nutrition

Respiratory Systems

Body Fluid Regulation and Excretory Systems

Sense Organs

Locomotion and Support Systems

Hormones and Endocrine Systems

Reproductive Systems

Animal Development and Aging

Behavioral Ecology

Population Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation of Biodiversity

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