Physiology Lecture 1: Homeostasis and Cells
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Questions and Answers

What is the process by which cells release substances from vesicles into the extracellular space?

  • Endocytosis
  • Endosymbiosis
  • Exoskeleton
  • Exocytosis (correct)

Which step comes first in the process of homeostasis?

  • Adaptation
  • Control center
  • Receptors (correct)
  • Effector

What does the term 'Homo' mean in the context of homeostasis?

  • Different
  • Static
  • Stable
  • Similar (correct)

What is the role of the nucleus in a cell?

<p>Protein synthesis and genetic blueprint (B)</p> Signup and view all the answers

In what type of feedback does the body adapt to changes?

<p>Positive feedback (C)</p> Signup and view all the answers

What is the definition of pathophysiology?

<p>Abnormal functioning of the body (D)</p> Signup and view all the answers

Study Notes

Cellular Transport

  • Exocytosis is the process by which cells release substances from vesicles into the extracellular space.

Homeostasis

  • The first step in the process of homeostasis is the detection of a change in the internal environment.
  • The term 'Homo' in the context of homeostasis means 'same' or 'unchanging'.
  • Homeostasis involves the body's ability to maintain a stable internal environment despite changes in the external environment.

Cellular Structure and Function

  • The nucleus plays a crucial role in a cell as it contains the cell's genetic material and controls cell growth and reproduction.

Feedback Mechanisms

  • The body adapts to changes through negative feedback mechanisms, where the response to a stimulus reverses or reduces the stimulus.

Pathophysiology

  • Pathophysiology is the study of changes in normal bodily functions that result from disease or injury.

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Test your knowledge of the basics of physiology with a focus on the simplest form of life, homeostasis, positive and negative feedback, and pathophysiology. Learn about genetic disorders like cystic fibrosis and more.

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