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Basic Concepts of Anatomy & Physiology

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  • What is anatomy?

    Anatomy is the study of the structure and shape of the body and its parts.

  • What is physiology?

    Physiology is the study of how the body and its parts function.

  • How are anatomy and physiology related?

    They are related because the structure of a body part determines its function.

  • What are the main levels of structural organization in the human body?

    Chemical, cellular, tissue, organ, organ system, and organism levels.

  • What is a cell?

    The basic unit of life that performs all vital functions.

  • What is a tissue?

    A group of similar cells working together to perform a specific function.

  • What defines an organ?

    A structure composed of at least two different tissue types that performs a specific function.

  • What is an organ system?

    A group of organs that work together to perform complex functions.

  • What is homeostasis?

    The body's ability to maintain a stable internal environment despite external changes.

  • Why is homeostasis important?

    It ensures optimal conditions for cellular function and survival.

  • What are the main components of a feedback system?

    Receptor, control center, and effector.

  • What role does the receptor play in homeostasis?

    It detects changes in the environment and sends information to the control center.

  • What is the function of the control center?

    It processes information and determines the appropriate response.

  • What does the effector do in a feedback system?

    It carries out the response to restore balance.

  • What is the difference between negative and positive feedback?

    Negative feedback reverses a change to maintain homeostasis; positive feedback amplifies a change.

  • Give an example of negative feedback.

    Regulation of body temperature by sweating or shivering.

  • Give an example of positive feedback.

    Blood clotting and childbirth contractions.

  • What are the four main types of tissues?

    Epithelial, connective, muscle, and nervous tissues.

  • What is the primary function of epithelial tissue?

    To cover body surfaces and line cavities.

  • What is the main role of connective tissue?

    To support, protect, and bind other tissues.

  • What is the function of muscle tissue?

    To produce movement through contraction.

  • What does nervous tissue do?

    It transmits electrical signals to coordinate body functions.