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Fundamentals of Anatomy & Physiology - Chapter 1

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Termini in questo insieme (27)

  • What is anatomy?

    Anatomy is the study of internal and external body structures and their physical relationships among other body parts.

  • What is physiology?

    Physiology is the study of how living organisms perform their vital functions.

  • What does the principle of complementarity of structure and function state?

    All specific functions are performed by specific structures, and the form of a structure relates to its function.

  • Name two main types of anatomy.

    Gross anatomy examines large structures visible to the naked eye, and microscopic anatomy examines structures only visible with magnification.

  • What are the types of gross anatomy?

    Surface, regional, sectional, systemic, clinical, pathological, radiologic, surgical, and developmental anatomy.

  • What are the two types of microscopic anatomy?

    Cytology (study of cells) and histology (study of tissues).

  • What are the types of physiology?

    Cell physiology, organ physiology, systemic physiology, and pathological physiology.

  • List the six levels of organization in the human body from simplest to most complex.

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

  • What is the chemical level of organization?

    Atoms are the smallest stable units of matter; molecules consist of two or more atoms.

  • What defines the cellular level?

    Cells are the smallest living units in the body.

  • What is a tissue?

    A group of cells working together to perform specific functions.

  • What is an organ?

    Made of two or more tissues working together to perform specific functions.

  • What is an organ system?

    A group of organs interacting for a particular function; humans have 11 organ systems.

  • What is homeostasis?

    The continuous physiological processes that establish a relatively stable internal environment.

  • What are the three components of a homeostatic regulatory mechanism?

    Receptor (detects stimulus), control center (processes information), and effector (carries out commands).

  • What is negative feedback in homeostasis?

    A regulation type that opposes variation from normal by negating the original stimulus to maintain variables within a normal range.

  • What is positive feedback in homeostasis?

    A regulation type that enhances variation from normal, amplifying the original change to complete a process quickly.

  • Name the major body cavities of the trunk.

    Thoracic cavity and abdominopelvic cavity, separated by the diaphragm.

  • What are the subdivisions of the thoracic cavity?

    Right and left pleural cavities (lungs), pericardial cavity (heart), and mediastinum (connective tissue mass).

  • What are the subdivisions of the abdominopelvic cavity?

    Superior abdominal cavity, inferior pelvic cavity, and peritoneal cavity lined with peritoneum.

  • What is the function of serous membranes?

    They line body cavities and cover organs, consisting of parietal and visceral layers with serous fluid to reduce friction.

  • What are the anatomical planes used to section the body?

    Frontal (coronal), sagittal (midsagittal and parasagittal), and transverse (horizontal) planes.

  • What is the anatomical position?

    Standard reference position with hands at sides, palms facing forward, and feet together.

  • What are the four abdominopelvic quadrants?

    Right upper quadrant (RUQ), left upper quadrant (LUQ), right lower quadrant (RLQ), and left lower quadrant (LLQ).

  • What is the difference between autoregulation and extrinsic regulation in homeostasis?

    Autoregulation is a local automatic response; extrinsic regulation involves nervous or endocrine system control.

  • What is the role of the nervous and endocrine systems in homeostasis?

    Nervous system directs rapid, short-term responses; endocrine system directs slower, long-term responses.

  • What is the significance of anatomical terminology?

    Standardized terms improve communication and understanding of body regions, positions, and structures.