HCR 240 Pathophysiology Midterm Study Guide (Modules 1–3)
2026 | Complete Review | Graded A+
1. Describe the significance of pathognomonic changes in diagnosing diseases.
Pathognomonic changes are only applicable to infectious diseases.
Pathognomonic changes are significant because they provide
unique identifiers that help in accurately diagnosing specific
diseases.
Pathognomonic changes are used to describe the overall health of a
patient.
Pathognomonic changes are irrelevant to diagnosis and only reflect
general symptoms.
2. Describe the role of histamine and heparin in the immune response.
Histamine promotes vasodilation and increases vascular
permeability, while heparin acts as an anticoagulant.
Histamine is involved in cell signaling, and heparin enhances oxygen
transport.
Histamine reduces inflammation, and heparin stimulates white blood
cell production.
Histamine inhibits immune responses, and heparin promotes clot
formation.
3. Mononucleosis is caused by
the human papilloma virus
the Epstein-Barr virus
Staphylococcus bacteria
, herpes simplex virus
4. What is autoimmunity?
A condition in which the body produces an immune response against
foreign tissue constituents.
A condition in which the body does not produce an immune response
None of the above.
A condition in which the body produces an immune response
against its own tissue constituents.
5. Describe the significance of histology in understanding diseases.
Histology is used only for surgical procedures.
Histology helps in understanding diseases by providing insights into
the structure and function of tissues affected by various conditions.
Histology is primarily concerned with the treatment of diseases.
Histology focuses on the genetic aspects of diseases.
6. What is effusion and what does it involve?
Effusion is the collection of fluid in the body tissues or a body cavity
that has escaped from blood vessels or lymphatics.
Effusion is the accumulation of proteins in the body tissues or a body
cavity that has escaped from blood vessels or lymphatics.
Effusion is the collection of blood in the body tissues.
Effusion is the collection of air in the body tissues or a body cavity that
has escaped from blood vessels or lymphatics.
,7. A patient asks the nurse about cellular atrophy. The response from the nurse
should include which statement about cells? Cellular atrophy is:
an increase in the number of cells.
a decrease in the number of cells.
a decrease in cell size.
an increase in cell size.
8. Which immunoglobulin is the main antibody in secretions and plays a
significant role in first-line defense at the mucosal level?
IgM
IgG
IgD
IgA
IgE
9. HIV primarily infects which type of cell?
CD4 + T cells
All immune cells
CD8 + T cells
Natural Killer cells
10. If a patient presents with symptoms of a sore throat and white patches in the
mouth, which infection might they be suffering from, and what is the likely
causative agent?
Thrush caused by Candida
, Fungal infection caused by Aspergillus
Viral pharyngitis caused by Epstein-Barr virus
Bacterial pharyngitis caused by Streptococcus
11. What is the primary disease associated with the Epstein-Barr virus?
HIV
Hepatitis B
Infectious mononucleosis
Down syndrome
12. Describe the implications of wound dehiscence in the healing process.
Wound dehiscence can lead to complications such as infection and
delayed healing.
Wound dehiscence is a sign of effective tissue regeneration.
Wound dehiscence indicates that the healing process is progressing
normally.
Wound dehiscence has no impact on the healing process.
13. Which of the following is NOT considered a classic sign of inflammation?
Swelling
Nausea
Pain
Loss of function
14. What is the most abundant antibody found in mucosal secretions?
2026 | Complete Review | Graded A+
1. Describe the significance of pathognomonic changes in diagnosing diseases.
Pathognomonic changes are only applicable to infectious diseases.
Pathognomonic changes are significant because they provide
unique identifiers that help in accurately diagnosing specific
diseases.
Pathognomonic changes are used to describe the overall health of a
patient.
Pathognomonic changes are irrelevant to diagnosis and only reflect
general symptoms.
2. Describe the role of histamine and heparin in the immune response.
Histamine promotes vasodilation and increases vascular
permeability, while heparin acts as an anticoagulant.
Histamine is involved in cell signaling, and heparin enhances oxygen
transport.
Histamine reduces inflammation, and heparin stimulates white blood
cell production.
Histamine inhibits immune responses, and heparin promotes clot
formation.
3. Mononucleosis is caused by
the human papilloma virus
the Epstein-Barr virus
Staphylococcus bacteria
, herpes simplex virus
4. What is autoimmunity?
A condition in which the body produces an immune response against
foreign tissue constituents.
A condition in which the body does not produce an immune response
None of the above.
A condition in which the body produces an immune response
against its own tissue constituents.
5. Describe the significance of histology in understanding diseases.
Histology is used only for surgical procedures.
Histology helps in understanding diseases by providing insights into
the structure and function of tissues affected by various conditions.
Histology is primarily concerned with the treatment of diseases.
Histology focuses on the genetic aspects of diseases.
6. What is effusion and what does it involve?
Effusion is the collection of fluid in the body tissues or a body cavity
that has escaped from blood vessels or lymphatics.
Effusion is the accumulation of proteins in the body tissues or a body
cavity that has escaped from blood vessels or lymphatics.
Effusion is the collection of blood in the body tissues.
Effusion is the collection of air in the body tissues or a body cavity that
has escaped from blood vessels or lymphatics.
,7. A patient asks the nurse about cellular atrophy. The response from the nurse
should include which statement about cells? Cellular atrophy is:
an increase in the number of cells.
a decrease in the number of cells.
a decrease in cell size.
an increase in cell size.
8. Which immunoglobulin is the main antibody in secretions and plays a
significant role in first-line defense at the mucosal level?
IgM
IgG
IgD
IgA
IgE
9. HIV primarily infects which type of cell?
CD4 + T cells
All immune cells
CD8 + T cells
Natural Killer cells
10. If a patient presents with symptoms of a sore throat and white patches in the
mouth, which infection might they be suffering from, and what is the likely
causative agent?
Thrush caused by Candida
, Fungal infection caused by Aspergillus
Viral pharyngitis caused by Epstein-Barr virus
Bacterial pharyngitis caused by Streptococcus
11. What is the primary disease associated with the Epstein-Barr virus?
HIV
Hepatitis B
Infectious mononucleosis
Down syndrome
12. Describe the implications of wound dehiscence in the healing process.
Wound dehiscence can lead to complications such as infection and
delayed healing.
Wound dehiscence is a sign of effective tissue regeneration.
Wound dehiscence indicates that the healing process is progressing
normally.
Wound dehiscence has no impact on the healing process.
13. Which of the following is NOT considered a classic sign of inflammation?
Swelling
Nausea
Pain
Loss of function
14. What is the most abundant antibody found in mucosal secretions?
