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Anatomy & Physiology: Chapter 1 Key Concepts

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  • Difference between anatomy and physiology

    Anatomy is the study of body structure; physiology is the study of body function.

  • Six levels of body organization from simplest to most complex

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

  • Definition of homeostasis

    Homeostasis is the body's ability to maintain a stable internal environment despite external changes.

  • Role of negative feedback in homeostasis

    Negative feedback reverses a change to return the body to its set point, maintaining stability.

  • Role of positive feedback in homeostasis

    Positive feedback amplifies a response until a specific event occurs, then stops.

  • Examples of organs in the digestive system

    Stomach, intestines, liver, pancreas, and esophagus.

  • Examples of organs in the respiratory system

    Lungs, trachea, bronchi, and nasal cavity.

  • Anatomical terminology: body regions

    Includes terms like thoracic (chest), abdominal, pelvic, and cranial (head) regions.

  • Anatomical directional terms

    Terms such as anterior (front), posterior (back), superior (above), and inferior (below).

  • Major body cavities

    Dorsal cavity (cranial and spinal) and ventral cavity (thoracic and abdominopelvic).

  • Organs in the cranial cavity

    The brain is housed in the cranial cavity.

  • Organs in the spinal cavity

    The spinal cord is contained within the spinal cavity.

  • Organs in the thoracic cavity

    Heart and lungs are located in the thoracic cavity.

  • Organs in the abdominopelvic cavity

    Includes stomach, liver, intestines, bladder, and reproductive organs.

  • Branches of anatomy

    Includes gross anatomy, microscopic anatomy, developmental anatomy, and others.

  • Branches of physiology

    Includes neurophysiology, cardiovascular physiology, respiratory physiology, and others.

  • Function of the integumentary system

    Protects the body, regulates temperature, and prevents water loss.

  • Function of the skeletal system

    Supports the body, protects organs, and produces blood cells.

  • Function of the muscular system

    Allows movement, maintains posture, and produces heat.

  • Importance of anatomical terminology

    Provides a standardized way to describe body locations and positions clearly and accurately.