Why is it possible for potassium to diffuse easily into and out
of cells?
The resting plasma membrane is more permeable to
potassium.
A major determinant of the resting membrane potential
necessary for the transmiss
...
Why is it possible for potassium to diffuse easily into and out
of cells?
The resting plasma membrane is more permeable to
potassium.
A major determinant of the resting membrane potential
necessary for the transmission of nerve impulses is the ratio
between:
Intracellular and extracellular K+
What is a consequence of plasma membrane damage to the
mitochondria?
Influx of calcium ions halts ATP production.
Current research supports the belief that after heart muscle
injury, the damage:
Is repaired by newly matured cardiomyocytes
Free radicals cause cell damage by:
Giving up an electron, which causes injury to the chemical
bonds of the cell membrane
The loss of the ATP during ischemia causes cells to:
Swell because of the influx of sodium chloride (NaCl)
Which statement is true about eukaryotic cells?
They contain compartments called organelles.
Which mode of chemical signaling uses local chemical
mediators that are quickly taken up, destroyed, or
immobilized?
During cell injury caused by hypoxia, an increase in the
osmotic pressure occurs within the cell because:
Sodium chloride enters the cell.
When a mucous gland cell creates a new substance from
previously absorbed material, this process is known as which
specialized cellular function?
Quiz 2
Question 4
.
Question : A reduction in an individual’s number of NK cells appears to
correlate with an increased risk for the development of:
Student Answer: Depression
Question 6
.
Question : Which statement concerning exotoxins is true?
Exotoxins are released during bacterial growth.
Question 7
.
Question : Which statements are true regarding viruses? (Select all that
apply.)
Viruses are referred to as eukaryotes.
Viruses are capable of producing messenger ribonucleic acid
RNA (mRNA).
Viruses are capable of uncoating cytoplasmic nucleocapsids.
Question 12
.
Question : Cytokines are thought to cause fevers by stimulating the synthesis
of which chemical mediator?
Prostaglandin
Question 14
.
Question : Fusion is the step in phagocytosis during which:
Lysosomal granules enter the phagocytes.
Question : The main functions of NK cells include: (Select all that apply.)
Eliminating virus-infected cells
Eliminating previously identified cancer cells
Which cytokine is needed for the maturation of a functional Th
cell?
IL-2
Which disease is an example of a rickettsial infection?
Rocky Mountain spotted fever
Quiz 3
Which characteristic among women correlates with a high
morbidity of cancer of the colon, uterus, and kidney?
Women who have a high body mass index (BMI)
A carcinoma refers to abnormal cell proliferation originating
from which tissue?
Epithelial cells
The ras gene converts from a proto-oncogene to an oncogene
by:
Altering one or more nucleotide base pairs
Which statement concerning benign tumors is true?
The cells are well differentiated.
Which aberrant change causes the abnormal growth in a
retinoblastoma?
The tumor suppressor gene is turned off.
Which cancers pose the highest risk for radiologists? Blood
Quiz 4
Individuals being effectively managed for type 2 diabetes
mellitus often experience a healthy decline in blood pressure
as a result of which intervention?
Insulin-sensitivity medication therapy
Which factor can trigger an immune response in the
bloodstream that may result in an embolus?
Amniotic fluid
An infant has a continuous machine-type murmur best heard
at the left upper sternal border throughout systole and
diastole, as well as a bounding pulse and a thrill on palpation.
These clinical findings are consistent with which congenital
heart defect?
Patent ductus arteriosus (PDA)
When endothelia cells are injured, which alteration
contributes to atherosclerosis?
Cells are unable to make the normal amount of vasodilating
cytokines.
Question : Which cardiac pathologic condition contributes to ventricular
remodeling?
Myocardial ischemia
What is the effect of oxidized low-density lipoproteins (LDLs)
in atherosclerosis?
It causes smooth muscle proliferation
What is the trigger for ang
[Show More]
