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Jul 16, 2023 · In this article we will look at the lung volumes and capacities, how they are measured and how they are affected by pathology. It is useful to divide the total space within the lungs into volumes and capacities. This division allows for assessment of the mechanical condition of the lungs, its musculature, airway resistance and the effectiveness ...
Dec 18, 2023 · There are four volumes and four capacities recognised in respiratory physiology, where lung volumes are measurable gas-filled spaces in the lung, whereas capacities are combinations of two or more volumes (where the definition of capacity is the measure of the lungs' ability to hold a gas).
Key points. The table below provides acceptable ranges for systolic BP, heart rate and respiratory rate for unwell children. Patterns of change in physiological variables are as important, as the thresholds shown here. Background. There are many publications giving normal or acceptable ranges for physiological variables in children.
Apr 15, 2018 · The process of blood coagulation (hemostasis) is a cascading positive feedback loop. When the body is damaged inside or outside, the damaged tissues release factors that cause platelets to adhere to the tissue (the effector) at the site of the wound.
Jul 24, 2011 · A collection of reference ranges for various laboratory investigations, including full blood count, urea and electrolytes, liver function tests and more.
Jan 4, 2021 · At this time, the clinical practice was to compare a patient’s results with an ill-defined or at least inconsistently defined, range of values or ‘normal limits,’ called the ‘normal range.’ This was derived from a population of supposedly ‘normal’ (meaning healthy) individuals [ 25 ].
Discuss the role of homeostasis in healthy functioning. Recognise negative and positive feedback, giving one physiologic example of each mechanism. Maintaining homeostasis requires that the body continuously monitor its internal conditions.
