WorksheetsCXA144 - Principles of Pathophysiology
Total questions: 14
Worksheet time: 7mins
To be healthy an individual requires homeostasis of:
Cells and organs
Cells, tissues, organs and systems
Systems
Cells
A negative feedback loop is when...
The system enhances the change
Nil change
The feedback opposses the change
Gradients play a vital role in driving many physiological processes in the human body. Which of the following best describes the function of gradients in human physiology?
Gradients only occur when active transport mechanisms are present
Gradients allow substances to move from areas of higher to lower concentration or pressure across connected regions.
Gradients prevent the movement of molecules between areas to maintain equilibrium.
Gradients exist only in the presence of enzymes to facilitate movement.
Which is thew best illustration of the principle "form follows function"
The structure of a body part determines its function, such as thin lung tissue allowing gas exchange.
The shape of a body part changes randomly over time to adapt to disease.
All body parts must be solid for effective performance.
Function remains the same regardless of its structure.
Cell-to-cell communication is essential for coordinated function in the human body. Which of the following statements is most accurate about how cells communicate?
Only through electrical impulses
Neurons and muscle cells don't require communication for proper function
Endocrine cells rely on chemical signals to communicate with distant target cells
Diabetes is an example of when principles of physiology have failed
True
False
Physiological failure in one body system will rarely affect other systems
True
False
Iatrogenesis refers to any illness or complication caused unintentionally by medical treatment or intervention.
False
True
Pathogensis is
Signs and symnptoms
The recovery and healing process following treatment
The sequence of events in the development and disease progression
Which of the following statements about atrophy is TRUE?
Atrophy occurs when cells reduce in size, leading to smaller tissue mass.
Atrophy refers to cells dying and being replaced by scar tissue
Atrophy is when cells increase in number and size.
Atrophy happens only in response to cancer.
Hypertrophy involves an increase in the number of cells within a tissue
True
False
Metaplasia involves a reversible change where one cell type is replaced by another, usually due to chronic irritation.
True
False
A man has difficulty urinating. Imaging shows his prostate is enlarged due to an increased number of cells. What type of cellular adaptation is this?
Atrophy
Hypertrophy
Hyperplasia
Metaplasia
Atrophy only applies to muscles
True
False
