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Anatomy & Physiology Fundamentals

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  • What is Anatomy & Physiology?

    Anatomy is the study of body structure, while Physiology is the study of body function.

  • Levels of Organization in the Human Body

    Levels include chemical, cellular, tissue, organ, organ system, and organism.

  • Variation in Anatomy & Physiology

    Individual differences exist in body structure and function, influenced by genetics, age, and environment.

  • What are Organ Systems?

    Groups of organs working together to perform complex functions essential for life.

  • Anatomical Position

    Body standing upright, facing forward, feet flat, arms at sides with palms facing forward.

  • Purpose of Directional Terms

    To describe locations and relationships of body parts relative to each other.

  • Directional Terms: Front and Back

    Anterior (ventral) means front; posterior (dorsal) means back.

  • Directional Terms: Body Sides

    Medial is toward the midline; lateral is away from the midline.

  • Directional Terms: Limbs

    Proximal means closer to the trunk; distal means farther from the trunk.

  • Directional Terms: Depth Within the Body

    Superficial means near the surface; deep means farther inside the body.

  • Anatomical Terms for the Head and Neck

    Includes terms like cephalic (head), cervical (neck), and facial regions.

  • Anatomical Terms for the Front of the Trunk

    Includes thoracic (chest), abdominal (belly), and pelvic regions.

  • Anatomical Terms for the Back

    Includes vertebral (spine) and scapular (shoulder blade) regions.

  • Anatomical Terms for the Arm and Hand

    Includes brachial (arm), antebrachial (forearm), and manual (hand) regions.

  • Anatomical Terms for the Leg and Foot

    Includes femoral (thigh), crural (leg), and pedal (foot) regions.

  • Abdominopelvic Quadrants

    Four sections: right upper, left upper, right lower, and left lower quadrants.

  • Abdominopelvic Regions

    Nine regions including epigastric, umbilical, and hypogastric among others.

  • Anatomical Planes & Sections

    Sagittal divides left and right, frontal (coronal) divides front and back, transverse divides top and bottom.

  • Body Cavities

    Spaces that protect internal organs, including dorsal and ventral cavities.

  • Thoracic Cavity

    Contains the heart and lungs, protected by the rib cage.

  • Abdominopelvic Cavity

    Houses digestive, urinary, and reproductive organs below the diaphragm.

  • What is Homeostasis?

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

  • Feedback Loops

    Mechanisms that regulate homeostasis by adjusting physiological processes.

  • Negative Feedback

    Response that reverses a change to return to normal, e.g., temperature regulation.

  • Positive Feedback

    Response that amplifies a change, e.g., blood clotting or childbirth contractions.