Details of TEST BANK Applied Pathophysiology A Conceptual Approach to the Mechanisms of Disease 3rd Ed Braun
Applied Pathophysiology A Conceptual
... [Show More] Approach to the Mechanisms of Disease 3rd Edition Braun Test Bank
Chapter 1Introduction to Pathophysiology 1. The nucleus _________, which is essential for function and survival of the cell.
A) B) C) D)
is the site of protein synthesis contains the genetic code transforms cellular energy
initiates aerobic metabolism
2. Although energy is not made in mitochondria, they are known as the power plants of the cell because they:
A) B) C) D)
contain RNA for protein synthesis. utilize glycolysis for oxidative energy. extract energy from organic compounds.
store calcium bonds for muscle contractions.
3. Although the basic structure of the cell plasma membrane is formed by a lipid bilayer, most of the specific membrane functions are carried out by:
A) B) C) D)
bound and transmembrane proteins. complex, long carbohydrate chains. surface antigens and hormone receptors. a gating system of selective ion channels.
4. To effectively relay signals, cell-to-cell communication utilizes chemical messenger systems that:
A) B) C) D)
displace surface receptor proteins. accumulate within cell gap junctions.
bind to contractile microfilaments. release secretions into extracellular fluid. 5. Aerobic metabolism, also known as oxidative metabolism, provides energy by:A)
B)
C)
D)
removing the phosphate bonds from ATP.
combining hydrogen and oxygen to form water.
activating pyruvate stored in the cytoplasm.
breaking down glucose to form lactic acid.
6. Exocytosis, the reverse of endocytosis, is important in _______ into the
extracellular fluid.
A)
B)
C)
D)
Engulfing and ingesting fluid and proteins for transport
Killing, degrading, and dissolving harmful microorganisms
Removing cellular debris and releasing synthesized substances
Destruction of particles by lysosomal enzymes for secretion
7. The process responsible for generating and conducting membrane potentials is:
A)
B)
C)
D)
diffusion of current-carrying ions.
millivoltage of electrical potential.
polarization of charged particles.
ion channel neurotransmission.
8. Epithelial tissues are classified according to the shape of the cells and the
number of layers. Which of the following is a correctly matched description
and type of epithelial tissue?
A)
B)
C)
D)
Simple epithelium: cells in contact with intercellular matrix; some do not
extend to surface
Stratified epithelium: single layer of cells; all cells rest on basement
membrane
Glandular epithelium: arise from surface epithelia and underlying
connective tissue
Pseudostratified epithelium: multiple layers of cells; deepest layer rests on
basement membrane
9. Connective tissue contains fibroblasts that are responsible for:
A)
B)
providing a fibrous framework for capillaries.
synthesis of collagen, elastin, and reticular fibers.C)
D)
forming tendons and the fascia that covers muscles.
filling spaces between tissues to keep organs in place.
10. Although all muscle tissue cells have some similarities, smooth muscle (also
known as involuntary muscle) differs by:
A)
B)
C)
D)
having dense bodies attached to actin filaments.
containing sarcomeres between Z lines and M bands.
having rapid contractions and abundant cross-striations.
contracting in response to increased intracellular calcium.
11. Which of the following aspects of the function of the nucleus is performed by
ribosomal RNA (rRNA)?
A)
B)
C)
D)
Copying and carrying DNA instructions for protein synthesis
Carrying amino acids to the site of protein synthesis
Providing the site where protein synthesis occurs
Regulating and controlling protein synthesis
12. Breakdown and removal of foreign substances and worn-out cell parts are
performed by which of the following organelles?
A)
B)
C)
D)
Lysosomes
Golgi apparatus
Ribosomes
Endoplasmic reticulum (ER)
13. Impairment in the function of peroxisomes would result in:
A)
inadequate sites for protein synthesis.
B)
C)
D)
an inability to transport cellular products across the cell membrane.
insufficient energy production within a cell.
accumulation of free radicals in the cytoplasm.
14. After several months of trying to conceive, a couple is undergoing fertility
testing. Semen analysis indicates that the mans sperm have decreased motility,
a finding that is thought to underlie the couples inability to become pregnant.Which of the following cellular components may be defective within the mans
sperm?
A)
B)
C)
D)
Ribosomes
Microtubules
Mitochondria
Microfilaments
15. Which of the following statements is true of glycolysis?
A)
Glycolysis requires oxygen.
B)
C)
D)
Glycolysis occurs in cells without mitochondria.
Glycolysis provides the majority of the bodys energy needs.
Glycolysis produces energy, water, and carbon dioxide.
16. Which of the following membrane transport mechanisms requires the greatest
amount of energy?
A)
B)
C)
D)
Facilitated diffusion
Passive transport
Vesicular transport
Simple diffusion
17. A male patient with a diagnosis of type 1 diabetes mellitus is experiencing
hyperglycemia because he lacks sufficient insulin to increase the availability of
glucose transporters in his cell membranes. Consequently, his cells lack
intracellular glucose and it accumulates in his blood. Which of the following
processes would best allow glucose to cross his cell membranes?
A)
B)
C)
D)
Facilitated diffusion
Simple diffusion
Secondary active transport
Endocytosis
18. Which of the following statements is true of skeletal muscle cells?
A)
Skeletal muscle cells each have an apical, lateral, and basal surface.B)
C)
D)
They are closely apposed and are joined by cell-to-cell adhesion
molecules.
Their basal surface is attached to a basement membrane.
Skeletal muscle is multinucleated, lacking true cell boundaries.
19. Which of the following body tissues exhibits the highest rate of turnover and
renewal?
A)
B)
C)
D)
The squamous epithelial cells of the skin
The connective tissue supporting blood vessels
The skeletal muscle that facilitates movement
The nervous tissue that constitutes the central nervous system
20. A patient with a pathophysiologic condition that affects the desmosomes is
most likely to exhibit:
A)
B)
C)
D)
impaired contraction of skeletal and smooth muscle.
weakness of the collagen and elastin fibers in the extracellular space.
impaired communication between neurons and effector organs.
separation at the junctions between epithelial cells.
Answer Key
1. B
2. C
3. A
4. D
5. B
6. C
7. A
8. C
9. B
10. A11. C
12. A
13. D
14. B
15. B
16. C
17. A
18. D
19. A
20. D
Chapter 2 Altered Cells and Tissues
1. Ischemia and other toxic injuries increase the accumulation of intracellular
calcium as a result of:
A)
B)
C)
D)
release of stored calcium from the mitochondria.
improved intracellular volume regulation.
decreased influx across the cell membrane.
attraction of calcium to fatty infiltrates.
2. The patient is found to have liver disease, resulting in the removal of a lobe of
his liver. Adaptation to the reduced size of the liver leads to ___________ of
the remaining liver cells.
A)
B)
C)
D)
metaplasia
organ atrophy
compensatory hyperplasia
physiologic hypertrophy
3. A person eating peanuts starts choking and collapses. His airway obstruction is
partially cleared, but he remains hypoxic until he reaches the hospital. The
prolonged cell hypoxia caused a cerebral infarction and resulting __________
in the brain.A)
B)
C)
D)
caspase activation
coagulation necrosis
rapid phagocytosis
protein p53 deficiency
4. Bacteria and viruses cause cell damage by _______, which is unique from the
intracellular damage caused by other injurious agents.
A)
B)
C)
D)
disrupting the sodium/potassium ATPase pump
interrupting oxidative metabolism processes
replicating and producing continued injury
decreasing protein synthesis and function
5. The patient has a prolonged interruption in arterial blood flow to his left kidney,
causing hypoxic cell injury and the release of free radicals. Free radicals
damage cells by:
A)
B)
C)
D)
destroying phospholipids in the cell membrane.
altering the immune response of the cell.
disrupting calcium storage in the cell.
inactivation of enzymes and mitochondria.
6. Injured cells have impaired flow of substances through the cell membrane as a
result of:
A)
B)
C)
D)
increased fat load.
altered permeability.
altered glucose utilization.
increased surface receptors.
7. Reversible adaptive intracellular responses are initiated by:
A)
B)
C)
D)
stimulus overload.
genetic mutations.
chemical messengers.
mitochondrial DNA.8. Injured cells become very swollen as a result of:
A)
B)
C)
D)
increased cell protein synthesis.
altered cell volume regulation.
passive entry of potassium into the cell.
bleb formation in the plasma membrane.
9. A diabetic patient has impaired sensation, circulation, and oxygenation of his
feet. He steps on a piece of glass, the wound does not heal, and the area tissue
becomes necrotic. The necrotic cell death is characterized by:
A)
B)
C)
D)
rapid apoptosis.
cellular rupture.
shrinkage and collapse.
chronic inflammation.
10. A 99-year-old woman has experienced the decline of cell function associated
with age. A group of theories of cellular aging focus on programmed:
A)
B)
C)
D)
changes with genetic influences.
elimination of cell receptor sites.
insufficient telomerase enzyme.
DNA mutation or faulty repair.
11. An 89-year-old female patient has experienced significant decreases in her
mobility and stamina during a 3-week hospital stay for the treatment of a
femoral head fracture. Which of the following phenomena most likely accounts
for the patients decrease in muscle function that underlies her reduced
mobility?
A)
B)
C)
D)
Impaired muscle cell metabolism resulting from metaplasia
Dysplasia as a consequence of inflammation during bone remodeling
Disuse atrophy of muscle cells during a prolonged period of immobility
Ischemic atrophy resulting from vascular changes while on bedrest
12. A 20-year-old college student has presented to her campus medical clinic for a
scheduled Papanicolaou (Pap) smear. The clinician who will interpret the smear
will examine cell samples for evidence of:A)
B)
C)
D)
changes in cell shape, size, and organization.
the presence of unexpected cell types.
ischemic changes in cell samples.
abnormally high numbers of cells in a specified field.
13. Which of the following pathophysiologic processes is most likely to result in
metastatic calcification?
A)
B)
C)
D)
Benign prostatic hyperplasia
Liver cirrhosis
Impaired glycogen metabolism
Hyperparathyroidism
14. Despite the low levels of radiation used in contemporary radiologic imaging, a
radiology technician is aware of the need to minimize her exposure to ionizing
radiation. What is the primary rationale for the technicians precautions?
A)
B)
C)
D)
Radiation stimulates pathologic cell hypertrophy and hyperplasia.
Radiation results in the accumulation of endogenous waste products in the
cytoplasm.
Radiation interferes with DNA synthesis and mitosis.
Radiation decreases the action potential of rapidly dividing cells.
15. The parents of a 4-year-old girl have sought care because their daughter has
admitted to chewing and swallowing imported toy figurines that have been
determined to be made of lead. Which of the following blood tests should the
care team prioritize?
A)
B)
C)
D)
White blood cell levels with differential
Red blood cell levels and morphology
Urea and creatinine levels
Liver function panel
16. A 70-year-old male patient has been admitted to a hospital for the treatment of
a recent hemorrhagic stroke that has left him with numerous motor and sensory
deficits. These deficits are most likely the result of which of the following
mechanisms of cell injury?A)
B)
C)
D)
Free radical injury
Hypoxia and ATP depletion
Interference with DNA synthesis
Impaired calcium homeostasis
17. Which of the following processes associated with cellular injury is most likely
to be reversible?
A)
B)
C)
D)
Cell damage resulting from accumulation of fat in the cytoplasm
Cellular changes as a result of ionizing radiation
Cell damage from accumulation of free radicals
Apoptosis
18. The extrinsic pathway of apoptosis can be initiated by:
A)
damage to cellular DNA.
B)
C)
D)
decreased ATP levels.
activation of the p53 protein.
activation of death receptors on the cell surface.
19. A patient with severe peripheral vascular disease has developed signs of dry
gangrene on the great toe of one foot. Which of the following pathophysiologic
processes most likely contributed to this diagnosis?
A)
B)
C)
D)
Inappropriate activation of apoptosis
Bacterial invasion
Impaired arterial blood supply
Metaplastic cellular changes
20. Which of the following facts underlies the concept of replicative senescence?
A)
Genes controlling longevity are present or absent in varying quantities
among different individuals.
B)
C)
Telomeres become progressively shorter in successive generations of a
cell.
The damaging influence of free radicals increases exponentially in later
generations of a cell.D)
Aging produces mutations in DNA and deficits in DNA repair.
Answer Key
1. A
2. C
3. B
4. C
5. A
6. B
7. C
8. B
9. B
10. A
11. C
12. A
13. D
14. C
15. B
16. B
17. A
18. D
19. C
20. B
Chapter 3 Inflammation and Tissue Repair
1. The characteristic, localized cardinal signs of acute inflammation include:
A)
fever.B) C) D)
fatigue. redness.
granuloma.
2. The vascular, hemodynamic stage of acute inflammation is initiated by momentary vasoconstriction followed by vasodilation that causes localized:
A) B) C) D)
bleeding.
congestion. pale skin.
coolness.
3. The cellular stage of acute inflammation is marked by the movement of leukocytes into the area. Which of the following cells arrives early in great numbers?
A) B) C) D)
Basophils
Lymphocytes Neutrophils
Platelets
4. The phagocytosis process involves three distinct steps. What is the initial step in the process?
A) B) C) D)
Engulfment
Intracellular killing Antigen margination
Recognition and adherence
5. Which of the following [Show Less]