Adrenal Physiology

Introduction This article looks at adrenal physiology and explains the production and effects of adrenal products. For more information on mechanisms of blood pressure regulation, secretion of ions, and other effects related to the...

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Control of Renal Function

Summary     Causes retention of… Info Substance Mechanism H2O Na+ K+   Angiotensin-II Activation of angiotensin II is the end result of activation of the renin-angiotensin system. Causes massive vasoconstriction. Also causes the release...

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Gastric Physiology

Introduction The stomach can be roughly divided into two regions, which contain two different lots of cells, with different functions Oxyntic glandular area – this contains oxyntic (parietal cells) that secrete gastric juice and...

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Liver Physiology

Function The two roles of the liver are: Processing of absorbed materials Excretion of unwanted products and secretion of stuff to help with fat digestion Structure The liver is divided into many thousands of...

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Physiology of Metabolism

Introduction Only 1% of pancreatic tissue is endocrine. This tissue is found in the Islets of langerhans. Surrounding the islets are adipose tissue deposits. The older you get, the more adipose tissue you have....

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Renal Physiology

Introduction Cortical nephrons make up 85% of nephrons. Juxtamedullary nephrons make up 15% of nephrons. There is a visceral epithelium that covers the glomerular capillaries inside Bowmann’s capsule. This is just one cell thick,...

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Respiratory Physiology

Inspiration is an active process, but normal expiration is a passive process. Forced expiration recruits the abdominal muscles to help force out air.   Muscles of breathing Diaphragm – this is the main muscle...

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