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(physiology)
12,014,271 results
  • StatPearls: Histology, Parietal Cells [BOOK]
    StatPearls Publishing: Treasure Island (FL) Varela Carlos D. CD ITESM Segura Nancy N BOOK
  • Unique to the human body due to its acid-secreting ability, the parietal cell has always been a subject of interest for scientific research. Harbored in the gastric glands of the fundus and body, parietal cells are considered to be dynamic, as they undergo morphological transition during the resting and secretory states.[1][2] Parietal cells play a pivotal role in gastric homeostasis, as well as …
  • StatPearls: Hounsfield Unit [BOOK]
    StatPearls Publishing: Treasure Island (FL) DenOtter Tami D. TD Creighton University Schubert Johanna J Creighton University BOOK
  • The Hounsfield unit (HU) is a relative quantitative measurement of radio density used by radiologists in the interpretation of computed tomography (CT) images. The absorption/attenuation coefficient of radiation within a tissue is used during CT reconstruction to produce a grayscale image. The physical density of tissue is proportional to the absorption/attenuation of the X-ray beam. The Hounsfie…
  • StatPearls: Physiology, Active Transport [BOOK]
    StatPearls Publishing: Treasure Island (FL) Chen Isaac I California Northstate University College of Medicine Lui Forshing F CA Northstate Uni, College of Med BOOK
  • There are two main modes of transport of molecules across any biological membrane. These are passive and active transport. Passive transport, most commonly by diffusion, occurs along a concentration gradient from high to low concentration. No energy is necessary for this mode of transport. Examples will include diffusion of gases across alveolar membranes and diffusion of neurotransmitters such a…
  • StatPearls: External Fixation Principles and Overview [BOOK]
    StatPearls Publishing: Treasure Island (FL) Hadeed Andrew A Werntz Ryan L. RL Larkin Community Hospital Varacallo Matthew M Department of Orthopaedic Surgery, University of Kentucky School of Medicine BOOK
  • Physicians have been using external fixation to treat fractures for more than 2000 years after being first described by Hippocrates as a way to immobilize the fracture while preserving soft tissue integrity. The fixator design and biomechanics have changed dramatically over the years, but the principles remain the same. The primary goal of external fixation is to maintain the length, alignment, a…
  • StatPearls: Physiology, Stroke Volume [BOOK]
    StatPearls Publishing: Treasure Island (FL) Bruss Zachary S. ZS Western University of Health Sciences Raja Avais A BOOK
  • To understand the principles of cardiac stroke volume (SV), it is necessary first to define the concept of cardiac output. Cardiac output (CO) is the blood volume the heart pumps through the systemic circulation over a period measured in liters per minute.[1] There are various parameters utilized to assess cardiac output comprehensively, but one of the more conventional approaches involves multip…
  • StatPearls: Systemic Inflammatory Response Syndrome [BOOK]
    StatPearls Publishing: Treasure Island (FL) Chakraborty Rebanta K. RK Steward Medical\Good Samaritan Medical Burns Bracken B East Tennessee State University (ETSU) BOOK
  • Systemic inflammatory response syndrome (SIRS) is an exaggerated defense response of the body to a noxious stressor (infection, trauma, surgery, acute inflammation, ischemia or reperfusion, or malignancy to name a few) to localize and then eliminate the endogenous or exogenous source of the insult. It involves the release of acute-phase reactants which are direct mediators of widespread autonomic…
  • StatPearls: Aerospace, Physical Effects [BOOK]
    StatPearls Publishing: Treasure Island (FL) Stein Matt M Richards Evan E San Antonio Military Medical Center BOOK
  • Aerospace medicine involves the investigation into and optimization of human physiology in esoteric environments such as undersea, flight, mountain, and space. As opposed to the majority of medical disciplines in which pathophysiology gets addressed in a normal environment, here effects on normal physiology get addressed in an abnormal environment, which presents a myriad of challenges regarding …
  • StatPearls: Physiology, Sensory System [BOOK]
    StatPearls Publishing: Treasure Island (FL) Gadhvi Mahesh M All India Institute of Medical Sciences Waseem Muhammad M Lincoln Medical Center / SGU BOOK
  • Humans can perceive various types of sensations, and with this information, our motor movement is determined. We become aware of the world by way of sensation. Sensations can also be protective to the body, by registering environmental cold or warm, and painful needle prick, for example. From the soft touch of the child to the painful punch of a boxer, all the daily activities carry associations …
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