Question 1

Which of the following is a consequence of a blocked cerebral aqueduct within the fetal brain?

Accepted Answer

A)  Meningitis 
B)  Spina bifida 
C)  Hydrocephalus 
D)  Microcephalia 
A)  Meningitis 
B)  Spina bifida 
C)  Hydrocephalus 
D)  Microcephalia

Question 2

This structure is part of the diencephalon; it regulates the anterior pituitary gland,water balance,appetite,body temperature,and the autonomic nervous system.

Accepted Answer

A)  Cerebellum 
B)  Pons 
C)  Medulla oblongata 
D)  Hypothalamus 
A)  Cerebellum 
B)  Pons 
C)  Medulla oblongata 
D)  Hypothalamus

Question 3

What is the name of the first phase of the action potential that is caused by the inward movement of sodium?

Accepted Answer

A)  Repolarization 
B)  Refractory period 
C)  Depolarization 
D)  Saltatory conduction 
A)  Repolarization 
B)  Refractory period 
C)  Depolarization 
D)  Saltatory conduction

Question 4

Which structure is called the lateral,third,and fourth?

Accepted Answer

A)  Meninges 
B)  Ventricles 
C)  Cerebral lobes 
D)  Parts of the brain stem 
A)  Meninges 
B)  Ventricles 
C)  Cerebral lobes 
D)  Parts of the brain stem

Question 5

Which of the following best describes the primary visual cortex and the primary auditory cortex?

Accepted Answer

A)  Choroid plexus and central canal 
B)  Infratentorial and supratentorial 
C)  Occipital and temporal 
D)  Precentral gyrus and postcentral gyrus 
A)  Choroid plexus and central canal 
B)  Infratentorial and supratentorial 
C)  Occipital and temporal 
D)  Precentral gyrus and postcentral gyrus

Question 6

The corpus callosum

Accepted Answer

A)  connects the medulla oblongata and the spinal cord. 
B)  is a band of gray matter that lines the ventricles. 
C)  is the point at which all motor fibers decussate. 
D)  connects the right and left cerebral hemispheres. 
A)  connects the medulla oblongata and the spinal cord. 
B)  is a band of gray matter that lines the ventricles. 
C)  is the point at which all motor fibers decussate. 
D)  connects the right and left cerebral hemispheres.

Question 7

The surface of the cerebrum is folded into elevations that resemble speed bumps; these speed bumps are called

Accepted Answer

A)  fissures. 
B)  sulci. 
C)  foramen. 
D)  convolutions, or gyri. 
A)  fissures. 
B)  sulci. 
C)  foramen. 
D)  convolutions, or gyri.

Question 8

The cerebral spinal fluid

Accepted Answer

A)  is produced by the corpus callosum. 
B)  cushions the brain, delivers nutrients to the brain, and removes wastes. 
C)  circulates between the cranium and the brain. 
D)  is secreted by the astrocytes. 
A)  is produced by the corpus callosum. 
B)  cushions the brain, delivers nutrients to the brain, and removes wastes. 
C)  circulates between the cranium and the brain. 
D)  is secreted by the astrocytes.

Question 9

What happens when the resting nerve is stimulated to threshold potential?

Accepted Answer

A)  The efflux of K+ restores the resting membrane potential. 
B)  An action potential fires. 
C)  The Na+/K+ pump further depolarizes the cell. 
D)  The membrane permeability to Na+ decreases. 
A)  The efflux of K+ restores the resting membrane potential. 
B)  An action potential fires. 
C)  The Na+/K+ pump further depolarizes the cell. 
D)  The membrane permeability to Na+ decreases.

Question 10

Which of the following is the middle layer of the meninges and looks like a spiderweb?

Accepted Answer

A)  Dura mater 
B)  Arachnoid mater 
C)  Pia mater 
D)  Reticular formation 
A)  Dura mater 
B)  Arachnoid mater 
C)  Pia mater 
D)  Reticular formation

Question 11

What is the term applied to the inability of a neuron to accept a stimulus while the neuron is still depolarized?

Accepted Answer

A)  Repolarization 
B)  Threshold potential 
C)  Resting membrane potential 
D)  Refractory period 
A)  Repolarization 
B)  Threshold potential 
C)  Resting membrane potential 
D)  Refractory period

Question 12

What term describes the hopping of the action potential (nerve impulse)along the axon from one node (of Ranvier)to the next?

Accepted Answer

A)  Myelination 
B)  Depolarization 
C)  Saltatory conduction 
D)  Repolarization 
A)  Myelination 
B)  Depolarization 
C)  Saltatory conduction 
D)  Repolarization

Question 13

The pituitary gland is connected to

Accepted Answer

A)  the hypothalamus. 
B)  the medulla oblongata. 
C)  the corpus callosum. 
D)  Broca's area. 
A)  the hypothalamus. 
B)  the medulla oblongata. 
C)  the corpus callosum. 
D)  Broca's area.

Question 14

Which of the following is the type of nervous tissue that conducts a nerve impulse?

Accepted Answer

A)  Astrocyte 
B)  Neuroglia 
C)  Neuron 
D)  Ependymal cell 
A)  Astrocyte 
B)  Neuroglia 
C)  Neuron 
D)  Ependymal cell

Question 15

The purpose of the Na⁺/K⁺-ATPase pump in the neuronal membrane is to

Accepted Answer

A)  depolarize the membrane. 
B)  repolarize the membrane. 
C)  establish the Na+ and K+ gradients necessary for the development of an action potential. 
D)  secrete myelin. 
A)  depolarize the membrane. 
B)  repolarize the membrane. 
C)  establish the Na+ and K+ gradients necessary for the development of an action potential. 
D)  secrete myelin.

Question 16

The repolarizing phase of the action potential

Accepted Answer

A)  means that the inside of the cell is becoming more positive. 
B)  is caused by the movement of sodium (Na+) into the cell. 
C)  is caused by the movement of potassium (K+) out of the cell. 
D)  is caused by the Na+/ K+ pump located in the membrane. 
A)  means that the inside of the cell is becoming more positive. 
B)  is caused by the movement of sodium (Na+) into the cell. 
C)  is caused by the movement of potassium (K+) out of the cell. 
D)  is caused by the Na+/ K+ pump located in the membrane.

Question 17

The emetic center and the CTZ

Accepted Answer

A)  are frontal lobe structures. 
B)  are located within the floor of the fourth ventricle. 
C)  are concerned with vomiting. 
D)  receive sensory input only from a distended stomach. 
A)  are frontal lobe structures. 
B)  are located within the floor of the fourth ventricle. 
C)  are concerned with vomiting. 
D)  receive sensory input only from a distended stomach.

Question 18

Which of the following is true of cerebrospinal fluid (CSF)?

Accepted Answer

A)  Is formed from the blood within the dural sinuses 
B)  Is formed across the walls of the arachnoid villi and is drained by the choroid plexi 
C)  Contains water, electrolytes, and blood 
D)  Circulates within the subarachnoid space and central canal 
A)  Is formed from the blood within the dural sinuses 
B)  Is formed across the walls of the arachnoid villi and is drained by the choroid plexi 
C)  Contains water, electrolytes, and blood 
D)  Circulates within the subarachnoid space and central canal

Question 19

The astrocytes

Accepted Answer

A)  support and protect the neurons and help form the blood-brain barrier. 
B)  secrete myelin. 
C)  secrete cerebrospinal fluid. 
D)  are concentrated within the choroid plexus. 
A)  support and protect the neurons and help form the blood-brain barrier. 
B)  secrete myelin. 
C)  secrete cerebrospinal fluid. 
D)  are concentrated within the choroid plexus.

Question 20

Which of the following is least true of the term REM?

Accepted Answer

A)  The most obvious characteristic is rapid eye movements. 
B)  The key to restorative sleep is the elimination of REM. 
C)  Most dreaming occurs during REM sleep. 
D)  Characterized by fluctuations in blood pressure, heart rate, and rhythm. 
A)  The most obvious characteristic is rapid eye movements. 
B)  The key to restorative sleep is the elimination of REM. 
C)  Most dreaming occurs during REM sleep. 
D)  Characterized by fluctuations in blood pressure, heart rate, and rhythm.

Exam 10: Nervous System: Nervous Tissue and Brain

Which of the following is a consequence of a blocked cerebral aqueduct within the fetal brain?

This structure is part of the diencephalon; it regulates the anterior pituitary gland,water balance,appetite,body temperature,and the autonomic nervous system.

What is the name of the first phase of the action potential that is caused by the inward movement of sodium?

Which structure is called the lateral,third,and fourth?

Which of the following best describes the primary visual cortex and the primary auditory cortex?

The corpus callosum

The surface of the cerebrum is folded into elevations that resemble speed bumps; these speed bumps are called

The cerebral spinal fluid

What happens when the resting nerve is stimulated to threshold potential?

Which of the following is the middle layer of the meninges and looks like a spiderweb?

What is the term applied to the inability of a neuron to accept a stimulus while the neuron is still depolarized?

What term describes the hopping of the action potential (nerve impulse)along the axon from one node (of Ranvier)to the next?

The pituitary gland is connected to

Which of the following is the type of nervous tissue that conducts a nerve impulse?

The purpose of the Na⁺/K⁺-ATPase pump in the neuronal membrane is to

The repolarizing phase of the action potential

The emetic center and the CTZ

Which of the following is true of cerebrospinal fluid (CSF)?

The astrocytes

Which of the following is least true of the term REM?

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Function of the Heart

Anatomy of the Blood Vessels

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Human Development and Heredity

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