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Essentials of Anatomy & Physiology - Chapter 1 Key Concepts

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Terms in this set (28)

  • What is the relationship between anatomy and physiology?
    Anatomy studies the structure of body parts, while physiology studies their functions and how they work together.
  • What are the common functions of all living things?
    Responsiveness, growth, reproduction, movement, and metabolism are essential functions shared by all living organisms.
  • Define homeostasis.
    Homeostasis is the maintenance of a stable internal environment necessary for survival.
  • What are the components of homeostatic regulation?
    A receptor senses change, a control center processes information, and an effector responds to restore balance.
  • Describe negative feedback in homeostasis.
    Negative feedback opposes the original stimulus to maintain stability, such as regulating body temperature.
  • Give an example of positive feedback.
    Positive feedback amplifies a response, like blood clotting or uterine contractions during labor.
  • List the 11 organ systems of the human body.
    Integumentary, Skeletal, Muscular, Nervous, Endocrine, Cardiovascular, Lymphatic, Respiratory, Digestive, Urinary, Reproductive.
  • What is the function of the integumentary system?
    Protects against environmental hazards, controls body temperature, and provides sensory information.
  • What does the skeletal system do?
    Provides support, protects tissues, stores minerals, and forms blood cells.
  • What is the role of the muscular system?
    Provides movement, protection, support for other tissues, and produces heat.
  • Describe the nervous system's function.
    Directs immediate responses to stimuli, coordinates activities of other organ systems, and interprets sensory information.
  • What is the endocrine system responsible for?
    Directs long-term changes in other organ systems through hormone secretion.
  • What does the cardiovascular system do?
    Transports blood cells, nutrients, wastes, oxygen, and carbon dioxide throughout the body.
  • What is the function of the lymphatic system?
    Defends against infection and disease, and returns tissue fluids to the bloodstream.
  • Describe the respiratory system's role.
    Delivers air to sites where gas exchange occurs between air and blood, and produces sound for communication.
  • What is the digestive system's function?
    Processes food and absorbs nutrients for the body.
  • What does the urinary system do?
    Eliminates waste products from the blood and controls water balance by regulating urine volume.
  • What is the role of the male reproductive system?
    Produces male sex cells (sperm) and hormones.
  • What is the role of the female reproductive system?
    Produces female sex cells (eggs), supports embryonic and fetal development, and produces hormones.
  • What are the major levels of organization in organisms?
    Chemical, cellular, tissue, organ, organ system, and organism levels.
  • What is the anatomical position?
    Body standing upright, facing forward, feet together, arms at sides with palms facing forward.
  • What are the abdominopelvic quadrants used for?
    Clinicians use them to locate aches, pains, and injuries by dividing the abdomen into four regions.
  • What is the difference between gross anatomy and microscopic anatomy?
    Gross anatomy studies structures visible to the naked eye; microscopic anatomy studies structures requiring magnification.
  • What are serous membranes?
    Thin tissue layers lining body cavities that produce fluid to reduce friction between organs.
  • Name the three major body cavities in the trunk.
    Thoracic cavity, abdominal cavity, and pelvic cavity.
  • What is the function of the pericardial cavity?
    Contains the heart and is lined by the pericardium, a serous membrane.
  • What is the function of the pleural cavities?
    Each contains a lung and is lined by the pleura, a serous membrane.
  • What is the retroperitoneal position?
    Organs located behind the peritoneal lining, such as the pancreas and kidneys.