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  2. Human embryonic development - Wikipedia

    en.wikipedia.org/wiki/Human_embryonic_development

    The respiratory system develops from the lung bud, which appears in the ventral wall of the foregut about four weeks into development. The lung bud forms the trachea and two lateral growths known as the bronchial buds, which enlarge at the beginning of the fifth week to form the left and right main bronchi .

  3. Intravascular volume status - Wikipedia

    en.wikipedia.org/wiki/Intravascular_volume_status

    In medicine, intravascular volume status refers to the volume of blood in a patient's circulatory system, and is essentially the blood plasma component of the overall volume status of the body, which otherwise includes both intracellular fluid and extracellular fluid.

  4. Allen's test - Wikipedia

    en.wikipedia.org/wiki/Allen's_test

    The modified Allen's test is also performed prior to heart bypass surgery. The radial artery is occasionally used as a conduit for bypass surgery, and its patency lasts longer in comparison to the saphenous veins. Prior to heart bypass surgery, the test is performed to assess the suitability of the radial artery to be used as a conduit.

  5. William Harvey - Wikipedia

    en.wikipedia.org/wiki/William_Harvey

    William Harvey (1 April 1578 – 3 June 1657) [1] was an English physician who made influential contributions to anatomy and physiology. [2] He was the first known physician to describe completely, and in detail, pulmonary and systemic circulation as well as the specific process of blood being pumped to the brain and the rest of the body by the heart (though earlier writers, such as Realdo ...

  6. Kussmaul's sign - Wikipedia

    en.wikipedia.org/wiki/Kussmaul's_sign

    This impaired filling causes the increased blood flow to back up into the venous system, causing the jugular vein distention (JVD) and is seen clinically in the internal jugular veins becoming more readily visible.

  7. Cardiovascular examination - Wikipedia

    en.wikipedia.org/wiki/Cardiovascular_examination

    The cardiovascular examination is a portion of the physical examination that involves evaluation of the cardiovascular system. The exact contents of the examination will vary depending on the presenting complaint but a complete examination will involve the heart (cardiac examination), lungs (pulmonary examination), belly (abdominal examination) and the blood vessels (peripheral vascular ...

  8. Bruce protocol - Wikipedia

    en.wikipedia.org/wiki/Bruce_protocol

    The test score is the time taken on the test, in minutes. This can also be converted to an estimated maximal oxygen uptake score using the calculator below and the following formulas, where the value "T" is the total time completed (expressed in minutes and fractions of a minute e.g. 9 minutes 15 seconds = 9.25 minutes).

  9. Shock (circulatory) - Wikipedia

    en.wikipedia.org/wiki/Shock_(circulatory)

    Shock is the state of insufficient blood flow to the tissues of the body as a result of problems with the circulatory system. Initial symptoms of shock may include weakness, tachycardia, hyperventilation, sweating, anxiety, and increased thirst. [1] This may be followed by confusion, unconsciousness, or cardiac arrest, as complications worsen. [1]