Question 1

Which of the following statements about the brain is NOT correct?

Accepted Answer

A) The pineal gland secretes serotonin,which is involved in mood changes. 
B) The thalamus relays sensory input from lower brain areas to the cerebrum. 
C) The cerebellum functions in muscle coordination,posture,and balance. 
D) The medulla oblongata has reflex centers for vomiting,coughing,sneezing,and swallowing. 
E) The hypothalamus is concerned with homeostasis and regulation of thirst,hunger,and blood pressure. 
A) The pineal gland secretes serotonin,which is involved in mood changes. 
B) The thalamus relays sensory input from lower brain areas to the cerebrum. 
C) The cerebellum functions in muscle coordination,posture,and balance. 
D) The medulla oblongata has reflex centers for vomiting,coughing,sneezing,and swallowing. 
E) The hypothalamus is concerned with homeostasis and regulation of thirst,hunger,and blood pressure.

Question 2

The likely effect on a neuron of two excitatory signals and twenty inhibitory signals is

Accepted Answer

A) transmission of a nerve impulse. 
B) transmission of a nerve impulse releasing inhibitory neurotransmitters at the next synapse. 
C) prohibiting the axon from firing. 
D) confused integration. 
A) transmission of a nerve impulse. 
B) transmission of a nerve impulse releasing inhibitory neurotransmitters at the next synapse. 
C) prohibiting the axon from firing. 
D) confused integration.

Question 3

Ion concentration differences produce an action potential creating a stimulus.The difference between a weak stimulus and an intense stimulus is

Accepted Answer

A) the action potential is graduated and a weak stimulus causes a small change in polarity. 
B) weak stimuli only open sodium gates,strong stimuli also open potassium gates. 
C) the frequency at which an axon fires. 
D) a strong stimulus does not allow repolarization but sends a constant flow of ions. 
E) All of the choices are correct. 
A) the action potential is graduated and a weak stimulus causes a small change in polarity. 
B) weak stimuli only open sodium gates,strong stimuli also open potassium gates. 
C) the frequency at which an axon fires. 
D) a strong stimulus does not allow repolarization but sends a constant flow of ions. 
E) All of the choices are correct.

Question 4

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 5

Which of the following statements about the peripheral nervous system is NOT correct?

Accepted Answer

A) The nerves contain the cell bodies of the neurons. 
B) The nerves contain nerve fibers which are bundles of axons. 
C) The somatic nervous system sends motor impulses to the skeletal muscles. 
D) Effectors include the muscles that carry out the instructions sent from the central nervous system. 
E) Cranial and spinal nerves are part of the peripheral nervous system. 
A) The nerves contain the cell bodies of the neurons. 
B) The nerves contain nerve fibers which are bundles of axons. 
C) The somatic nervous system sends motor impulses to the skeletal muscles. 
D) Effectors include the muscles that carry out the instructions sent from the central nervous system. 
E) Cranial and spinal nerves are part of the peripheral nervous system.

Question 6

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 7

The functions of the human nervous system include

Accepted Answer

A) sensory input. 
B) integration. 
C) generation of motor output. 
D) All of the choices characterize the human nervous system's functions. 
E) detection of stimuli. 
A) sensory input. 
B) integration. 
C) generation of motor output. 
D) All of the choices characterize the human nervous system's functions. 
E) detection of stimuli.

Question 8

The absence of this neurotransmitter would lead to a person having problems regulating body temperature and controlling their emotions.

Accepted Answer

A) Serotonin 
B) Endorphins 
C) Aceteylcholinesterase 
D) Dopamine 
A) Serotonin 
B) Endorphins 
C) Aceteylcholinesterase 
D) Dopamine

Question 9

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 10

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 11

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 12

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

Accepted Answer

A) True 
 B)False

Question 13

An animal with a simple netlike nervous system 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 14

The primary functions of the spinal cord are

Accepted Answer

A) to integrate intelligence with primal instinct and to coordinate memory. 
B) to coordinate speech,taste,smell,vision,and hearing. 
C) to serve as a center for reflex actions and to facilitate communication between the brain and spinal nerves. 
D) controlling muscle activity and maintaining balance. 
E) local control and decision-making for local anatomy. 
A) to integrate intelligence with primal instinct and to coordinate memory. 
B) to coordinate speech,taste,smell,vision,and hearing. 
C) to serve as a center for reflex actions and to facilitate communication between the brain and spinal nerves. 
D) controlling muscle activity and maintaining balance. 
E) local control and decision-making for local anatomy.

Question 15

When a finger or other appendage is severed in an accident,it is possible to surgically rejoin most tissues (bone,skin,etc.),which will then grow and heal.However,a cut through an appendage nerve is currently very difficult to reconnect.What structures are severed when the nerves in an appendage are severed?

Accepted Answer

A) axons 
B) synapses 
C) cell bodies 
D) dendrites 
E) interneurons 
A) axons 
B) synapses 
C) cell bodies 
D) dendrites 
E) interneurons

Question 16

In dissection,most nerve fibers appear gray to white because

Accepted Answer

A) the neuron is gray to white colored. 
B) sodium ions are part of the salt compound and they flow along the surface. 
C) nerve fibers rapidly die and dead tissues soon become gray or white. 
D) nerve fibers are covered in a myelin sheath made of lipid or fat molecules. 
E) nerve fibers consume large amounts of energy in the form of sugar. 
A) the neuron is gray to white colored. 
B) sodium ions are part of the salt compound and they flow along the surface. 
C) nerve fibers rapidly die and dead tissues soon become gray or white. 
D) nerve fibers are covered in a myelin sheath made of lipid or fat molecules. 
E) nerve fibers consume large amounts of energy in the form of sugar.

Question 17

Which of the following statements about the autonomic nervous system is NOT true?

Accepted Answer

A) The autonomic nervous system regulates the activities of cardiac and smooth muscle and glands. 
B) The sympathetic nervous system deals with "fight-or-flight" responses. 
C) The functions of the autonomic system are generally involuntary and subconscious. 
D) The parasympathetic nervous system promotes actions associated with relaxation. 
E) The neurotransmitter associated with the parasympathetic system is norepinephrine. 
A) The autonomic nervous system regulates the activities of cardiac and smooth muscle and glands. 
B) The sympathetic nervous system deals with "fight-or-flight" responses. 
C) The functions of the autonomic system are generally involuntary and subconscious. 
D) The parasympathetic nervous system promotes actions associated with relaxation. 
E) The neurotransmitter associated with the parasympathetic system is norepinephrine.

Question 18

An animal with a ladder like nervous system 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 19

What symptoms could result from a stroke to the right side of the frontal lobe?

Accepted Answer

A) The person could suffer the loss of motor control of the left side of their body,loss of memory,reasoning and judgment. 
B) The person could suffer the loss of motor control of the right side of their body,loss of memory,reasoning and judgment. 
C) The person could suffer the loss of motor control of the left side of their body,loss of memory,and speech. 
D) The person could suffer the loss of motor control of the right side of their body,loss of memory,reasoning and speech. 
A) The person could suffer the loss of motor control of the left side of their body,loss of memory,reasoning and judgment. 
B) The person could suffer the loss of motor control of the right side of their body,loss of memory,reasoning and judgment. 
C) The person could suffer the loss of motor control of the left side of their body,loss of memory,and speech. 
D) The person could suffer the loss of motor control of the right side of their body,loss of memory,reasoning and speech.

Question 20

The part of the brain that integrates sensory input from the eyes,ears,muscles,and joins with motor information from the cerebral cortex is the

Accepted Answer

A) cerebrum. 
B) cerebellum. 
C) brain stem. 
D) diencephalon. 
A) cerebrum. 
B) cerebellum. 
C) brain stem. 
D) diencephalon.

Exam 37: Neurons and Nervous Systems

Which of the following statements about the brain is NOT correct?

The likely effect on a neuron of two excitatory signals and twenty inhibitory signals is

Ion concentration differences produce an action potential creating a stimulus.The difference between a weak stimulus and an intense stimulus is

The functional units of the nervous system are

Which of the following statements about the peripheral nervous system is NOT correct?

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

The functions of the human nervous system include

The absence of this neurotransmitter would lead to a person having problems regulating body temperature and controlling their emotions.

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

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

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.

An animal with a simple netlike nervous system is the

The primary functions of the spinal cord are

In dissection,most nerve fibers appear gray to white because

Which of the following statements about the autonomic nervous system is NOT true?

An animal with a ladder like nervous system is the

What symptoms could result from a stroke to the right side of the frontal lobe?

The part of the brain that integrates sensory input from the eyes,ears,muscles,and joins with motor information from the cerebral cortex is the

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

Behavioral Ecology

Population Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation of Biodiversity

Filters