TestBank_Pathophysiology:_The Biologic Basis for Disease in Adults and Children_(8th) 1
TEST BANK PATHOPHYSIOLOGY THE BIOLOGIC BASIS
FOR DISEASE IN ADULTS AND CHILDREN 8th Edition by
Kathryn L. McCance, Sue E. Huether
Table of Contents
Part 1: CENTRAL CONCEPTS OF PATHOPHYSIOLOGY: CELLS AND TISSUES
Unit I: THE CELL
1. Cellular Biology
2. Altered Cellular and Tissue Biology: Environmental Agents
3. The Cellular Environment: Fluids and Electrolytes, Acids and Bases
Unit II: GENES AND GENE-ENVIRONMENT INTERACTION
4. Genes and Genetic Diseases
5. Genes, Environment-Lifestyle, andCommon Diseases
6. Epigenetics and Disease
Unit III: MECHANISMS OF SELF-DEFENSE
7. Innate Immunity: Inflammation
8. Adaptive Immunity
9. Alterations in Immunity and Inflammation
10. Infection
11. Stress and Disease
Unit IV. CELLULAR PROLIFERATION: CANCER
12. Cancer Biology
13. Cancer Epidemiology
14. Cancer in Children
Part 2: PATHOPHYSIOLOGIC ALTERATIONS: ORGANS AND SYSTEMS
Unit V: THE NEUROLOGIC SYSTEM
15. Structure and Function of the Neurologic System
16. Pain, Temperature Regulation, Sleep, and Sensory Function
17. Alterations in Cognitive Systems, Cerebral Hemodynamics, and Motor Function
18. Disorders of the Central and Peripheral Nervous Systems andthe Neuromuscular Junction
19. Neurobiology of Schizophrenia, Mood Disorders, and AnxietyDisorders
20. Alterations of Neurologic Function in Children
Unit VI: THE ENDOCRINE SYSTEM
21. Mechanisms of Hormonal Regulation
22. Alterations of Hormonal Regulation
23. Obesity and Disorders of Nutrition NEW
Unit VII: THE REPRODUCTIVE SYSTEMS
24. Structure and Function of the Reproductive Systems
25. Alterations of the Female Reproductive System
26. Alterations of the MaleReproductive System
27. Sexually Transmitted Infections
Unit VIII: THE HEMATOLOGIC SYSTEM
28. Structure and Function of the Hematologic System
29. Alterations of Erythrocyte, Platelet, and Hemostatic Function
30. Alterations of Leukocyte and Lymphoid Function
31. Alterations of HematologicFunction in Children
Unit IX: THE CARDIOVASCULAR AND LYMPHATIC SYSTEMS
32. Structure and Function of the Cardiovascular and Lymphatic Systems
33. Alterations of CardiovascularFunction
34. Alterations of Cardiovascular Function in Children
, TestBank_Pathophysiology:_The Biologic Basis for Disease in Adults and Children_(8th) 2
Unit X: THE PULMONARY SYSTEM
35. Structure and Function of the Pulmonary System
36. Alterations of PulmonaryFunction
37. Alterations of Pulmonary Function in Children
Unit XI: THE RENAL AND UROLOGIC SYSTEMS
38. Structure and Function of the Renal and Urologic Systems
39. Alterations of Renal and Urinary Function
40. Alterations of Renal and Urinary Tract Function in Children
Unit XII: THE DIGESTIVE SYSTEM
41. Structure and Functionof the Digestive System
42. Alterations of Digestive Function
43. Alterations of Digestive Function in Children
Unit XIII: THE MUSCULOSKELETAL SYSTEM
44. Structure and Function of the Musculoskeletal System
45. Alterations of Musculoskeletal Function
46. Alterations of Musculoskeletal Function in Children
Unit XIV: THE INTEGUMENTARY SYSTEM
47. Structure, Function, and Disorders of the Integument
48. Alterations of the Integument in Children
Unit XV: MULTIPLE INTERACTING SYSTEMS
49. Shock, Multiple Organ Dysfunction Syndrome, and Burns in Adults
50. Shock, Multiple Organ Dysfunction Syndrome, and Burns in Children
Chapter 01: Cellular Biology
MULTIPLE CHOICE
1. Which statement best describes the cellular function of metabolic absorption?
a. Cells can produce proteins.
b. Cells can secrete digestive enzymes.
c. Cells can take in and use nutrients.
d. Cells can synthesize fats.
ANS: C
In metabolic absorption, all cells take in and use nutrients and other substances from their
surroundings. The remaining options are not inclusive in their descriptions of cellular metabolic
absorption.
PTS: 1 DIF: Cognitive Level: Remembering
2. Where is most of a cell’s genetic information, including RNA and DNA, contained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Lysosome
ANS: C
The nucleus contains the nucleolus, a small dense structure composed largely of RNA, most of
the cellular DNA, and the DNA-binding proteins, such as the histones, which regulate its
, TestBank_Pathophysiology:_The Biologic Basis for Disease in Adults and Children_(8th) 3
activity. The mitochondria are responsible for cellular respiration and energy production.
Ribosomes’ chief function is to provide sites for cellular protein synthesis. Lysosomes function
as the intracellular digestive system.
PTS: 1 DIF: Cognitive Level: Remembering
3. Which component of the cell produces hydrogen peroxide (H2O2) by using oxygen to remove
hydrogen atoms from specific substrates in an oxidative reaction?
a. Lysosomes
b. Peroxisomes
c. Ribosomes
d. Endosome
ANS: B
Peroxisomes are so named because they usually contain enzymes that use oxygen to remove
hydrogen atoms from specific substrates in an oxidative reaction that produces H2O2, which is a
powerful oxidant and potentially destructive if it accumulates or escapes from peroxisomes.
Ribosomes are RNA-protein complexes (nucleoproteins) that are synthesized in the nucleolus
andsecreted into the cytoplasm through pores in the nuclear envelope called nuclear pore
complexes. Lysosomes are saclike structures that originate from the Golgi complex and contain
more than 40 digestive enzymes called hydrolases, which catalyze bonds in proteins, lipids,
nucleic acids, and carbohydrates. An endosome is a vesical that has been pinched off from the
cellular membrane.
PTS: 1 DIF: Cognitive Level: Remembering
4. Which cell component is capable of cellular autodigestion when it is released during cell injury?
a. Ribosome
b. Golgi complex
c. Smooth endoplasmic reticulum
d. Lysosomes
ANS: D
The lysosomal membrane acts as a protective shield between the powerful digestive enzymes
within the lysosome andthe cytoplasm, preventing their leakage into the cytoplasmic matrix.
Disruption of the membrane by various treatments or cellular injury leads to a release of the
lysosomal enzymes, which can then react with their specific substrates, causing cellular self-
digestion. The chief function of a ribosome is to provide sites for cellular protein synthesis. The
Golgi complex is a network of flattened, smooth vesicles andmembranes often located near the
cell nucleus. The smooth endoplasmic reticulum is involved in steroid hormone production
andremoving toxic substances from the cell.
PTS: 1 DIF: Cognitive Level: Remembering
5. Which cAMP-mediated response is related to antidiuretic hormone?
a. Increased heart rate andforce of contraction
b. Secretion of cortisol
c. Increased retention of water
d. Breakdown of fat
ANS: C
Antidiuretic hormone leads to increased retention of water in the body. Epinephrine causes
increases in heart rate andforce of contraction. Increased cortisol secretion is due to ACTH.
, TestBank_Pathophysiology:_The Biologic Basis for Disease in Adults and Children_(8th) 4
Breakdown of fat is due to glucagon.
PTS: 1 DIF: Cognitive Level: Remembering
6. During which phase of the cell cycle is DNA synthesized?
a. G1
b. S
c. G2
d. M
ANS: B
The four designated phases of the cell cycle are: (1) the G1 phase (G = gap), which is the period
between the M phase (M = mitosis) andthe start of DNA synthesis; (2) the S phase (S =
synthesis), during which DNA is synthesized in the cell nucleus; (3) the G2 phase, during which
RNA andprotein synthesis occurs, the period between the completion of DNA synthesis andthe
next phase (M); and(4) the M phase, which includes nuclear andcytoplasmic division.
PTS: 1 DIF: Cognitive Level: Remembering
7. What organic compound facilitates transportation across cell membranes by acting as receptors,
transport channels for electrolytes, andenzymes to drive active pumps?
a. Lipids
b. Proteases
c. Proteins
d. Carbohydrates
ANS: C
Proteins have several functions, including acting as receptors, transport channels for electrolytes,
andenzymes to drive active pumps Lipids help act as the “glue” holding cell membranes together.
Proteases cause the breakdown of protein. Carbohydrates are involved in cellular protection
andlubrication andhelp produce energy via oxidative phosphorylation.
PTS: 1 DIF: Cognitive Level: Remembering
8. Understanding the various steps of proteolytic cascades may be useful in designing drug therapy
for which human diseases?
a. Cardiac andvascular disorders
b. Autoimmune andmalignant disorders
c. Gastrointestinal andrenal disorders
d. Endocrine andgastrointestinal disorders
ANS: B
Understanding the various steps involved in this process is crucial for designing drug
interventions. Dysregulation of proteases features prominently in many human diseases,
including cancer, autoimmunity, andneurodegenerative disorders. Cardiac, vascular,
gastrointestinal, renal, andendocrine disorders do not involve this process.
PTS: 1 DIF: Cognitive Level: Remembering
9. Which structure prevents water-soluble molecules from entering cells across the plasma
membrane?
a. Carbohydrate chains
b. Glycoprotein channels
c. Membrane channel proteins
, TestBank_Pathophysiology:_The Biologic Basis for Disease in Adults and Children_(8th) 5
d. Lipid bilayer
ANS: D
The bilayer’s structure accounts for one of the essential functions of the plasma membrane. It is
impermeable to most water-soluble molecules (molecules that dissolve in water) because the water-soluble
molecules are insoluble in the oily core region. The bilayer serves as a barrier to the diffusion of water
andhydrophilic substances while allowing lipid-soluble molecules, such asoxygen (O2) and carbon dioxide
(CO2), to diffuse through it readily. Carbohydrate chains, glycoprotein channels, and membrane channel
proteins do not prevent water-soluble molecules from entering cells across the cell membrane.
PTS: 1 DIF: Cognitive Level: Remembering
10. A student asks for an explanation of the absolute refractory period of the action potential. What
response by the professor is best?
a. A stronger than normal impulse will evoke another response.
b. No stimulus is able to evoke another response at this time.
c. Multiple stimuli can produce more rapid action potentials.
d. The hyperpolarized state means a weaker stimulus produces a response.
ANS: B
During the absolute refractory state of the action potential, no stimulus is able to evoke another
response from the cell. A stronger than normal impulse may generate a response in the relative
refractory period. This period of time is not related to the number of stimuli. A hyperpolarized
state means a stronger than normal stimulus would be needed to generate a response.
PTS: 1 DIF: Cognitive Level: Remembering
11. Which form of cell communication is used to communicate within the cell itself andwith other
cells in direct physical contact?
a. Protein channel (gap junction)
b. Plasma membrane-bound signaling molecules
c. Hormone secretion such as neurotransmitters
d. Extracellular chemical messengers such as ligands
ANS: B
Cells communicate in three main ways; they display plasma membrane-bound signaling
molecules that affect the cell itself and other cells in direct physical contact with it, they affect
receptor proteins inside the target cell, and they form protein channels (gap junctions) that
directly coordinate the activities of adjacent cells. Neurotransmitters are released by neurons and
cross the synaptic cleft to communicate with the cells they innervate. Ligands are involved in
binding processes.
PTS: 1 DIF: Cognitive Level: Remembering
12. Which mode of chemical signaling uses blood to transport communication to cells some distance
away?
a. Paracrine
b. Autocrine
c. Neurotransmitter
d. Hormonal
, TestBank_Pathophysiology:_The Biologic Basis for Disease in Adults and Children_(8th) 6
ANS: D
Chemical signaling can be classified into three categories: (1) local-chemical mediator, (2)
hormone, and(3) neurotransmitter. Hormones are released by one set of cells and travel through
tissues or the bloodstream to another set of cells where they produce a response by those cells. In
paracrine signaling, cells secrete local chemical mediators that are quickly absorbed, destroyed,
or immobilized. Paracrine signaling requires close membrane-to-membrane contact. Paracrine
signaling usually involves different cell types; however, cells also may produce signals that they,
themselves, respond to, which is called autocrine signaling. Neurotransmitters are released by
neurons and cross the synaptic cleft to communicate with the cells they innervate.
PTS: 1 DIF: Cognitive Level: Remembering
13. Which mode of chemical signaling uses local chemical mediators that are quickly taken up,
destroyed, or immobilized?
a. Paracrine
b. Autocrine
c. Neurotransmitter
d. Hormone
ANS: A
In paracrine signaling, cells secrete local chemical mediators that are quickly taken up,
destroyed, or immobilized. Autocrine signaling occurs when the target cells produce signals that
they themselves respond to. Neurotransmitters are released by neurons andcross the synaptic
cleft to communicate with the cells they innervate. Hormones are released by one set of cells
andtravel through tissues or the bloodstream to another set of cells where they produce a
response bythose cells.
PTS: 1 DIF: Cognitive Level: Remembering
14. Neurotransmitters affect the postsynaptic membrane by binding to which structure?
a. Lipids
b. Ribosomes
c. Amphipathic lipids
d. Receptors
ANS: D
In each type of chemical signaling, the target cell receives the signal by first attaching to its
receptors. The other options do not correctly describe this process.
PTS: 1 DIF: Cognitive Level: Remembering
15. How do cells receive communication from the extracellular fluid surrounding them?
a. Protein channel (gap junction)
b. Plasma membrane-bound signaling molecules (involving receptors)
c. Hormone secretion such as neurotransmitters
d. Chemical messengers such as ligands
ANS: D
, TestBank_Pathophysiology:_The Biologic Basis for Disease in Adults and Children_(8th) 7
Signal transduction involves incoming signals or instructions from extracellular chemical
messengers (ligands) that are conveyed to the cell’s interior for execution. The other options do
not correctly describe how cells receive communication from the surrounding extracellular fluid.
PTS: 1 DIF: Cognitive Level: Remembering
16. Which molecule provides the second messenger necessary for extracellular communication to be
activated?
a. Guanosine triphosphate (GTP)
b. Adenosine monophosphate (AMP)
c. Adenosine triphosphate (ATP)
d. Guanosine diphosphate (GDP)
ANS: B
The two major second-messenger pathways are cyclic AMP (cAMP) andcalcium (Ca++). GTP,
ATP, andGDP are not major second-messenger pathways. GTP andGDP are “middlemen” or
intermediaries. Nutrients are transformed into energy in the form of ATP.
PTS: 1 DIF: Cognitive Level: Remembering
17. Under anaerobic conditions, what process provides energy for the cell?
a. Oxidative phosphorylation
b. Glycolysis
c. Lactolysis
d. Passive transport
ANS: B
Glycolysis provides energy to the cells when oxygen delivery is insufficient or delayed.
Oxidative phosphorylation is the process by which energy produced from nutrients is transferred
to ATP. Lactolysis is the breakdown of lactose. Passive transport is the movement of water
andsmall, nonelectrically charge molecules across plasma membranes.
PTS: 1 DIF: Cognitive Level: Remembering
18. What is the mechanism by which the energy produced from carbohydrates, proteins, andlipids is
transferred to adenosine triphosphate (ATP)?
a. Anaerobic glycolysis
b. Oxidative cellular metabolism
c. Oxidative phosphorylation
d. Tricarboxylic acid phosphorylation
ANS: C
Oxidative phosphorylation occurs in the mitochondria andis the mechanism by which the energy
produced from carbohydrates, fats, andproteins is transferred to ATP. Glycolysis provides
energy to the cells when oxygen delivery is insufficient or delayed. Oxidative cellular
metabolism andtricarboxylic acid phosphorylation are not involved in transferring energy to
ATP.
PTS: 1 DIF: Cognitive Level: Remembering
, TestBank_Pathophysiology:_The Biologic Basis for Disease in Adults and Children_(8th) 8
19. Passive transport is best described with which statement?
a. Being driven by osmosis, hydrostatic pressure, anddiffusion
b. Involving receptors that can bind with substances being transported
c. Being capable of transporting macromolecules
d. Requiring energy generated by the cell
ANS: A
Water and small electrically uncharged molecules move easily through pores in the plasma
membrane’s lipid bilayer. This process, called passive transport, naturally occurs through any
semipermeable barrier. It is driven by osmosis, hydrostatic pressure, anddiffusion, all of which
depend on the laws of physics anddo not require life. The other options do not correctly describe
passive transport.
PTS: 1 DIF: Cognitive Level: Remembering
20. Which is the best example of active transport?
a. Movement across a membrane due to differences in solute concentration
b. Movement requiring the expenditure of metabolic energy
c. Movement of two molecules simultaneously in one direction
d. Movement of two molecules simultaneously in opposite directions
ANS: B
Active transport requires a life, biologic activity, and the expenditure of metabolic energy.
Movement due simply to differences in concentration gradients is called passive transport.
Movement of two molecules in the same direction is called symport, while moving two
molecules in opposite directions is called antiport.
PTS: 1 DIF: Cognitive Level: Remembering
21. Which method of transport uses transmembrane proteins with receptors with a high degree of
specificity for the substance being transported?
a. Active
b. Mediated
c. Transmembranous
d. Passive
ANS: B
Mediated transport (passive and active) involves integral or transmembrane proteins with
receptors having a high degree of specificity for the substance being transported. Active and
passive transport are opposites with active transport requiring the use of energy and passive
transport relying on osmosis, hydrostatic pressure, and diffusion and not energy.
Transmembranous means “across membranes.”
PTS: 1 DIF: Cognitive Level: Remembering
22. The movement of fluid across the arterial end of capillary membranes into the interstitial fluid
surrounding the capillary is an example of which fluid movement process?
a. Hydrostatic pressure
, TestBank_Pathophysiology:_The Biologic Basis for Disease in Adults and Children_(8th) 9
b. Osmosis
c. Diffusion
d. Active transport
ANS: A
Hydrostatic pressure is the mechanical force of water pushing against cellular membranes.
Osmosis is the movement of water “down” a concentration gradient, that is, across a
semipermeable membrane from a region of higher water concentration to a region of lower water
concentration. Diffusion is the movement of a solute molecule from an area of greater solute
concentration to an area of lesser solute concentration. Active transport requires a life, biologic
activity, andthe expenditure of metabolic energy.
PTS: 1 DIF: Cognitive Level: Remembering
23. A student asks why osmolality is preferred over osmolarity as the measurement of osmotic
activity in the clinical assessment of individuals. What response by the professor is most
accurate?
a. Plasma contains sodium andchloride, which influence the volume of solution.
b. Volume affects perfusion more than the weight of solutes.
c. More of the weight of plasma is influenced by solutes rather than by water.
d. Osmotic activity depends on the concentration of solutes present in plasma.
ANS: C
Osmolality is a measure of the number of milliosmoles per kilogram (mOsm/kg) of water, or the
concentration of molecules per weight of water. Osmolarity is a measure of the number of
milliosmoles per liter (mOsm/L) of solution, or the concentration of molecules per volume of
solution. Osmolality is a measure of the number of milliosmoles per kilogram (mOsm/kg) of
water, or the concentration of molecules per weight of water. Osmolarity is a measure of the
number of milliosmoles per liter (mOsm/L) of solution, or the concentration of molecules per
volume of solution. In plasma, less of the plasma weight is water; therefore the overall
concentration of particles is greater. The osmolality will be greater than the osmolarity because
of the smaller proportion of water. Osmolality is thus the preferred measure of osmotic activity
in clinical assessment of individuals.
PTS: 1 DIF: Cognitive Level: Remembering
24. A patient who has diarrhea receives a 3% saline solution intravenously to replace the sodium
andchloride lost in the stool. What effect will this fluid replacement have on cells?
a. Become hydrated
b. Swell or burst
c. Shrink
d. Divide
ANS: C
A hypertonic solution has a concentration of greater than 285 to 294 mOsm/kg. An example of a
hypertonic solution is 3% saline solution. Water can be pulled out of the cells by a hypertonic solution;
therefore the cells shrink. An isotonic solution will cause the cells to become more hydrated without
disrupting the osmolality of either intracellular or extracellular fluid. Hypotonicsolutions can cause cells to
swell or burst. No solutions lead to cell division.
PTS: 1 DIF: Cognitive Level: Remembering
25. The transport of glucose from the blood to the cell is accomplished by which process?
, TestBank_Pathophysiology:_The Biologic Basis for Disease in Adults and Children_(8th) 10
a. Hydrostatic pressure
b. Active diffusion
c. Passive osmosis
d. Mediated transport
ANS: D
Mediated transport is the means by which glucose is transported from the blood to the cells. This
process uses transport proteins. Hydrostatic pressure is the force of water pushing against a cell
membrane. Diffusion is a passive process, not active. Osmosis is the movement of water “down”
a concentration gradient, that is, across a semipermeable membrane from a region of higher
water concentration to a region of lower water concentration andis a passive process.
PTS: 1 DIF: Cognitive Level: Remembering
26. What transports potassium andsodium across plasma membranes?
a. Passive electrolyte channels
b. Coupled channels
c. Adenosine triphosphatase (ATPase) enzyme
d. Diffusion
ANS: C
The exact mechanism for the transport of Na+ andK+ across the membrane is uncertain. One
proposal is that ATPase enzyme induces the transporter protein to undergo several
conformational changes, causing Na+ andK+ to move short distances (see Figure 1-29). The
remaining options do not correctly describe the means by which K+ andNa+ are transported.
PTS: 1 DIF: Cognitive Level: Remembering
27. What occurs during exocytosis?
a. Macromolecules can be secreted across eukaryotic cell membranes.
b. All substances are secreted into the cellular matrix.
c. No repairs in the plasma membrane can take place.
d. Solute molecules flow freely into andout of the cell.
ANS: A
In eukaryotic cells, secretion of macromolecules almost always occurs by exocytosis. The
remaining options do not correctly describe exocytosis.
PTS: 1 DIF: Cognitive Level: Remembering
28. The cellular uptake of the nutrient cholesterol depends on which process?
a. Receptor-mediated exocytosis
b. Antiport system
c. Receptor-mediated endocytosis
d. Passive transport
ANS: C
The cellular uptake of nutrients, such as cholesterol, for example, depends on receptor-mediated
endocytosis. Nutrients are not transported via the other options.
PTS: 1 DIF: Cognitive Level: Remembering
29. What causes the rapid change in the resting membrane potential to initiate an action potential?
a. Potassium gates open, andpotassium rushes into the cell, changing the membrane
potential from negative to positive.
