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198,717 results
  • StatPearls: Anatomy, Thorax, Heart Muscles [BOOK]
    StatPearls Publishing: Treasure Island (FL) Tran Dan B. DB FIU/Herbert Wertheim College of Medicine Mahabadi Navid N A.T. Still University BOOK
  • The heart muscles line the myocardium or middle layer of the heart walls and are responsible for the contractile function of the cardiac pump. Composed of cardiomyocytes, the heart muscle has distinctive cellular and physiological features allowing it to generate force to maintain adequate tissue and organ perfusion throughout the entire body. Heart muscle makes up one of the earliest functioning…
  • StatPearls: Spinal Cord Infarction [BOOK]
    StatPearls Publishing: Treasure Island (FL)Hanna Al-Shaikh R, Czervionke L, … Dredla BKBOOK
  • Comprehension of the anatomy of the spinal cord and their respective functions is paramount when diagnosing and managing spinal cord infarction (SCI). The spinal cord has 31 pairs of dorsal and ventral roots emanating from the cervical (n=8), thoracic (n=12), lumbar (n=5), and coccygeal (n=1) segments. The anterior two-thirds of the spinal cord contains motor and spinothalamic modalities, and the…
  • StatPearls: Physiology, Alveolar to Arterial Oxygen Gradient (Aa Gradient) [BOOK]
    StatPearls Publishing: Treasure Island (FL) Hantzidiamantis Paris J. PJ SUNY Upstate Medical University Amaro Eric E Kendall Regional Memorial Hospital BOOK
  • The A-a gradient, or the alveolar-arterial gradient, measures the difference between the oxygen concentration in the alveoli and arterial system. The A-a gradient has important clinical utility as it can help narrow the differential diagnosis for hypoxemia. The A-a gradient calculation is as follows:  A-a Gradient = PAO2 – PaO2. With PAO2 representing alveolar oxygen pressure and PaO2 representin…
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