mid term Flashcards
Which information is most correct regarding IgAs?
IgAs are
1. measurable in the blood in very low concentrations.
2. the largest immunoglobulins.
3. found in saliva and other body secretions.
4.effective against parasites and allergies
found in saliva and other body secretions
Which of the following statements is correct regarding pathologic hyperplasia?
- Produces abnormal proliferation of abnormal cells.
- Is an adaptive mechanism that enables organ regeneration.
- Increases cell size.
- May occur in response to growth factors.
May occur in response to growth factors
A nurse knows that free radicals may be produced by
- protein peroxidation.
- metabolism of exogenous chemicals or drugs.
- spontaneous decay of superoxide.
- vitamins E and C supplements
metabolism of exogenous chemicals or drugs.
Which of the following is true about alcohol (ethanol)?
- Is metabolized via the microsomal P-450.
- Is primarily metabolized and excreted by the kidneys.
- Increases activation of methionine, an essential amino acid.
- Can produce hypermagnesemia with chronic use.
Is metabolized via the microsomal P-450.
A nurse remembers that aging is associated with
- reduced cross-linking of collagen.
- reduced degradation of collagen.
- increased cross-linking of collagen.
- increased collagen synthesis.
increased cross-linking of collagen.
Which information is correct regarding DNA polymerase?
DNA polymerase functions to
1. signal the end of a gene.
2. pull apart a portion of a DNA strand.
3. add the correct nucleotides to a DNA strand.
4. provide a template for the sequence of mRNA nucleotides.
- add the correct nucleotides to a DNA strand.
At what site does protein synthesis occur? The site of protein synthesis is the 1. codon. 2. intron. 3. ribosome. 4. anticodon.
ribosome
A female has one X chromosome. Which diagnosis will the nurse observe documented on the chart?
- Trisomy X syndrome
- Klinefelter syndrome
- Fragile X syndrome
- Turner syndrome
Turner syndrome
Which information indicates that the nurse has a good understanding of X-linked recessive inheritance?
- The gene is passed from an affected father to all of his daughters.
- The trait is observed significantly more often in females than in males.
- Males are said to be heterozygous for the X chromosome.
- A sex-limited trait is one that occurs significantly more often in one sex than in the other.
- The gene is passed from an affected father to all of his daughters
Ribosomes are nucleoproteins that
- are synthesized in the mitochondria and secreted into the cytosol.
- are synthesized in the cytoplasm.
- consist of a network of cisternae.
- synthesize a signal recognition sequence.
synthesize a signal recognition sequence.
The plasma membrane of a cell is
- permeable to water soluble molecules’ movement into the cell.
- composed primarily of amphipathic molecules.
- dimpled because of peripheral membrane proteins.
- impermeable to lipid-soluble molecules.
composed primarily of amphipathic molecules.
Which information is correct regarding neurotransmitters?
- Act on the cells that produce and secrete them.
- Act on nearby cells that also take them up and destroy them.
- Are produced by neurosecretory neurons and transmitted via the blood.
- Diffuse across the synaptic cleft and act on postsynaptic target cell.
Diffuse across the synaptic cleft and act on postsynaptic target cell.
A nurse knows that active transport requires
- receptors capable of recognizing and binding with specific molecules.
- a hydrostatic pressure gradient between intracellular and extracellular regions.
- a molecule bound to a ligand that moves the substance down the gradient.
- the presence of pores in the cell membrane with no energy expenditure.
receptors capable of recognizing and binding with specific molecules.
A nurse recalls depolarization occurs when the
- cell is more negatively charged and its polarity is negative.
- sodium–potassium (Na+/K+) pump removes sodium from the cell.
- voltage-regulated channels open and Na+ enters the cell.
- cell decreases by 25–30 millivolts and reaches threshold.
voltage-regulated channels open and Na+ enters the cell.
Which statement is most correct regarding miRNAs?
miRNAs
1. result from the attachment of a methyl group to a cytosine base, followed by a guanine base.
2. enhance X-inactivation, silencing genes on the X chromosome.
3. become the hereditary transmission of epigenetic changes to successive generations.
4. are short nucleotides derived from introns of protein-coding genes.
are short nucleotides derived from introns of protein-coding genes.
Which pathophysiologic process is occurring in a person with Beckwith-Wiedemann syndrome?
- Missing chromosome 15
- Missing gene product
- Downregulation of IGF2
- Extra copies of active IGF2
Extra copies of active IGF2
Which statement by the nurse indicates an accurate understanding of epigenetics and cancer?
- “Hypomethylation of the promoter region of the RB1 gene is often observed in retinoblastoma.”
- “Hypomethylation increases as tumors progress from benign neoplasms to malignancy.”
- “Hypomethylation of specific subgroups of miRNAs is associated with tumorigenesis.”
- “Hypomethylation occurs when HDAC inhibitors are administered for cancer.”
Hypomethylation increases as tumors progress from benign neoplasms to malignancy.”
- This disease does not follow the inheritance patterns of single-gene disease. This type of disease is considered to be
A. multifactorial.
B. congenital.
C. following a bell-shaped distribution model.
D following a liability of threshold model
following a liability of threshold model
Although the mother is staying with the child after surgical correction, her husband comes to visit and brings their other child. This child has Prader-Willi syndrome. This disease is an example of A. imprinting. B. trisomy. C. hypermethylation. D. nondisjunction.
imprinting
Which is a common characteristic of Beckwith-Wiedemann syndrome? A. Omphalocele B. Leg-length discrepancy C. Hyperglycemia D. Obesity
Omphalocele
The infant with Beckwith- Wiedemann syndrome is at an increased risk for which disorder? A. Mental retardation B. Wilms tumor C. Triangular-shaped face D. Hypotonia
Wilms tumor
Which statement indicates the nurse has an accurate understanding concerning passive immunity?
Passive immunity
1. “is produced after exposure to an antigen.”
2. “is the result of an attenuated immunization.”
3. “can last for years.”
4. “can be transferred from a donor to a recipient
“can be transferred from a donor to a recipient
Which information is most correct regarding IgAs?
IgAs are
1. measureable in the blood in very low concentrations.
2. the largest immunoglobulins.
3. found in saliva and other body secretions.
4. effective against parasites and allergies.
found in saliva and other body secretions.
A nurse is asked about NK cells. How should the nurse respond?
NK cells
1. only work alone to cause apoptosis.
2. destroy abnormal cells with MHC class I markers.
3. lack antigen-specific receptors.
4. mature in the thymus.
lack antigen-specific receptors.
A person arrives at the clinic and reports mild tiredness and discomfort after exposure to a family member with the flu. The nurse suspects the person is in the 1. convalescence period. 2. incubation period. 3. prodromal period. 4invasion period
prodromal period
Which information is correct regarding parasitic infections?
- These types of infections attach through pili (fimbriae).
- C. albicans is an example of a parasitic infection.
- Parasitic infections are transmitted from human to human.
- Malaria is a common parasitic infection.
malaria s a common parasitic infection
A person who is HIV positive is hospitalized with pneumonia caused by Pneumocystis jiroveci. The nurse understands that this development indicates the person
- has adequate amounts of Th cells.
- is serologically positive for asymptomatic HIV disease.
- is in the early stages of HIV disease.
- has progressed from HIV to AIDS.
has progressed from HIV to AIDS.
A nurse is asked how antibiotics work. How should the nurse reply?
One of the actions of antibiotics includes
1. protection of the bacterial cell wall.
2. inhibition of protein synthesis.
3. enhancement of DNA replication.
4. support for folic acid synthesis.
inhibition of protein synthesis.
Alloimmunity occurs when
- the immune system produces a response to tissues of another individual.
- a disturbance occurs in the immunologic tolerance of self-antigens.
- antigens are in the environment.
- an anaphylactic reaction occurs.
the immune system produces a response to tissues of another individual.
A person has a type I allergic reaction. Which pathophysiologic response is occurring?
- Antibody binds to tissue-specific antigen.
- Immune complexes are deposited in vessel walls.
- T lymphocytes, not antibodies, mediate the process.
- IgE and products of tissue mast cells are released.
IgE and products of tissue mast cells are released.
Autoimmunity occurs when
- self-antigens stimulate molecular mimicry.
- transplanted tissues are rejected.
- the immune system recognizes self-antigens as foreign.
- an acute rejection of a transplanted organ or tissue occurs.
the immune system recognizes self-antigens as foreign.
Which information is correct regarding secondary immune deficiencies?
Secondary immune deficiencies may be the result of
1. increased dietary zinc intake.
2. caring for an older parent with Alzheimer disease.
3. aspirin therapy that is prescribed by the physician.
4. congenital or genetic defects in the neonate.
caring for an older parent with Alzheimer disease.
The characteristic vascular changes at the site of an injury produce
- blood vessel constriction after dilation .
- increased permeability and leakage.
- tightening of the capillary endothelial cell junctions.
- pallor and swelling where the injury occurred.
increased permeability and leakage.
Which statement indicates the nurse has an accurate understanding of mast cells?
Mast cells
1. “can be activated through an intrinsic or extrinsic pathway.”
2. “degranulate in response to chemical agents.”
3. “reduce blood flow after activation.”
4. “can be blocked by the therapeutic use of aspirin.”
degranulate in response to chemical agents.”
Which information is correct regarding phagocytosis?
Phagocytosis involves
1. opsonization, engulfment, and formation of a phagosome.
2. a reduction in nitric oxide production.
3. formation of a phagosome by mast cells.
4. a respiratory burst produced by the release of the primary lysosomal granules
opsonization, engulfment, and formation of a phagosome.
A person has a large open wound that has formed scar tissue. The nurse knows which type of healing has occurred?
- Primary
- Secondary
- Debridement
- Regeneration
secondary
Which parameter will the nurse monitor to best determine the systemic perfusion in a child?
- Urinary output
- Partial pressure of arterial oxygen (Pao2)
- Serum lactate
- Systolic hypotension
serum lactate
An adolescent is in neurogenic shock. Which finding would the nurse typically find when taking the history?
- Spinal cord injury
- Recent cardiac surgery
- Loss of blood
- Pulmonary embolus
spinal cord injury
In a child 3 years old, which information is correct regarding a burn injury?
- Decreased intraabdominal pressure can impair hemodynamics and renal function.
- Pulmonary edema is the main cause of morbidity and mortality.
- Mucosal hypertrophy and diarrhea are common after major burns.
- Intraosseous cannulation can be effective for fluid replacement
Intraosseous cannulation can be effective for fluid replacement
1. Neurogenic shock is a form of hypovolemic and A. cardiogenic shock. B. vasogenic shock. C. multiple organ dysfunction syndrome. D. reperfusion injury.
vasogenic
2. In all types of shock, cells do not receive adequate amounts of oxygen because of decreased delivery or increased cellular consumption. Decreased oxygen and nutrient delivery to cells impairs the cells’ ability to compensate and maintain normal function. Organ failure is caused by the depletion of A. fat. B. glycogen. C. protein. Dcalcium.
protein
A person with hypertension and heart failure has edema in the lower legs and sacral area. The nurse suspects this condition is due to a(n)
- increase in plasma oncotic pressure.
- decrease in capillary hydrostatic pressure.
- decrease in lymph obstruction pressure.
- increase in capillary hydrostatic pressure.
increase in capillary hydrostatic pressure.
A person reports severe diarrhea for 2 days. The nurse understands this stimulates a(n)
- reduction in aldosterone secretion.
- reduction in renin secretion.
- increase in antidiuretic hormone secretion.
- increase in natriuretic peptide secretion.
increase in antidiuretic hormone secretion.
A person arrives in the emergency department after a loss of consciousness and the development of Kussmaul respirations. The individual has a history of diabetes and 2 days of vomiting and diarrhea. The nurse suspects the person has which of the following primary disorders?
- Respiratory alkalosis
- Respiratory acidosis
- Metabolic alkalosis
- Metabolic acidosis
metabolic acidosis
A person with a history of chronic lung disease arrives in the clinic with a 1-week history of a productive cough, hypoventilation, and headache. The nurse suspects the person is experiencing
- respiratory acidosis.
- respiratory alkalosis.
- metabolic acidosis.
- metabolic alkalosis.
respiratory acidosis.
1. The sacral area is covered with which type of tissue? A. Muscle B. Neural C. Epithelial D. Connective
epithelial
2. A large portion of the area is removed because of ischemia and cell death. The teen suffers from tissue A. apoptosis. B. necrosis. C. catabolism. D. metabolism.
necorosis
The nurse notices that the patient has generalized deteriorated muscle mass and decreased strength in the extremities. This condition is called A. senescence. B. autophagy. C. apoptosis. D. sarcopenia.
sarcopenia
The patient dies from an aneurysm and the nurse assesses the changes occurring in the patient’s body immediately after death. The nurse notices that the patient’s lower legs are turning purple. This is referred to as A. algor mortis. B. livor mortis. C. rigor mortis. D. postmortem autolysis.
liver mortis
A person develops cardiogenic shock after an acute MI. The nurse understands this will produce a(an)
- inhibition of the sympathetic nervous system.
- stimulation of the renin-angiotensin system.
- decreased activation of the complement system.
- lowered production of catecholamine system.
stimulation of the renin-angiotensin system.
Which laboratory result should the nurse check for a person with suspected septic shock?
- Hetastarches
- Immunoglobulin E (IgE)
- Lactate
- Antigen titer
lactate
A person arrives at the emergency department with a burn injury. The burn area is covered with thin-walled, fluid-filled blisters and is very painful. The nurse suspects this is a
- first-degree injury.
- superficial partial-thickness injury.
- deep partial-thickness injury.
- full-thickness injury.
superficial partial-thickness injury.
A nurse is assigned to care for a person with a 40% deep partial-thickness injury. Which parameter will the nurse closely monitor to best assess adequate fluid resuscitation? 1. Hematocrit level 2. Urine output 3. Heart rate 4Blood pressure
urine output