Tissue Homeostasis and Cell Injury

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What is the primary function of tissue homeostasis?

To maintain a steady state of cell growth and death (correct)

To promote uncontrolled cell proliferation

To disrupt the cell cycle and mitosis

To induce cell injury and necrosis

Where do stem cells typically reside in the cell cycle?

During the interphase of the cell cycle

During the M phase

In the quiescent phase of the cell cycle (correct)

During the G2 phase

What is a common consequence of disrupting tissue homeostasis?

Increased cell proliferation and tissue growth

Increased apoptosis and tissue regeneration

Decreased cell death and tissue atrophy

Uncontrolled cell proliferation or too little cell death (correct)

What is the primary mechanism of cell injury induced by radiation?

Denaturation of proteins Signup and view all the answers

What is the term for the process by which cells undergo controlled cell death?

Apoptosis Signup and view all the answers

What is the primary consequence of insufficient carbohydrate intake in cellular metabolism?

Reduced ATP production Signup and view all the answers

What is the primary mechanism of reperfusion injury following ischemia?

Sudden increase in oxygen levels, leading to inflammation and free radical formation Signup and view all the answers

Vitamin C deficiency can lead to which of the following?

Impaired collagen cross-linking Signup and view all the answers

What is the primary consequence of a calorie surplus?

Inflammation and obesity Signup and view all the answers

Which of the following can cause DNA damage?

All of the above Signup and view all the answers

What is the term for the increase in proliferation of epidermis after skin loss?

Hyperplasia Signup and view all the answers

What is the primary difference between metaplasia and dysplasia?

Metaplasia is reversible, while dysplasia is not Signup and view all the answers

What is the primary function of apoptosis in the immune system?

To kill infected cells Signup and view all the answers

What is the consequence of necrosis?

Cell contents are released into the surrounding tissue Signup and view all the answers

What is the primary difference between necrosis and apoptosis?

Necrosis results in cell membrane loss of integrity, while apoptosis does not Signup and view all the answers

What is the mechanism of action of Novichok nerve agent?

Inhibiting acetylcholine esterase Signup and view all the answers

What is the outcome of atrophy in cells?

Cells become smaller with reduced function Signup and view all the answers

Tissue Homeostasis and Cell Injury

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Questions and Answers

What is the primary function of tissue homeostasis?

Where do stem cells typically reside in the cell cycle?

What is a common consequence of disrupting tissue homeostasis?

What is the primary mechanism of cell injury induced by radiation?

What is the term for the process by which cells undergo controlled cell death?

What is the primary consequence of insufficient carbohydrate intake in cellular metabolism?

What is the primary mechanism of reperfusion injury following ischemia?

Vitamin C deficiency can lead to which of the following?

What is the primary consequence of a calorie surplus?

Which of the following can cause DNA damage?

What is the term for the increase in proliferation of epidermis after skin loss?

What is the primary difference between metaplasia and dysplasia?

What is the primary function of apoptosis in the immune system?

What is the consequence of necrosis?

What is the primary difference between necrosis and apoptosis?

What is the mechanism of action of Novichok nerve agent?

What is the outcome of atrophy in cells?

What is the term for the process of cells becoming bigger in response to increased demand?

What is the term for the process of cells proliferating in response to demand?

What is the term for the death of cells through a regulated process?

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