Histamines in the human body cause the contractions of muscle tissue in the lungs, uterus and stomach, according to Encyclopaedia Britannica. Histamines also dilate blood vessels, accelerate the heart rate and increase stomach acid production. This protein serves as a neurotransmitter between the nervous system and other cells in the body. Systemically, the most obvious sign of a histamine reaction is inflammation.Know More
Encyclopaedia Britannica indicates histamines activate during an immune response within the body. At an injury site, histamines cause more permeability in cell membranes, which allows fluids, white blood cells and blood plasma proteins to arrive more quickly than normal. Special cells in the body called mast cells release histamines in injured tissue to begin the immune system response.
An allergic reaction occurs in the human body when histamines believe harmless substances such as dust or pollen are invading germs, according to the Biology Department at Davidson College. Histamines increase swelling in bronchial tubes within the lungs during asthmatic reactions when external stimuli enter the organs. Medicines known as antihistamines help control these allergic responses. Allergies that cause histamine reactions are not normal because dust and pollen are not dangerous to the human immune system.
Histamines are released in large amounts during an allergic reaction. Massive amounts of histamines released in the body cause systemic reactions such as sneezing, coughing, runny nose and itchy eyes, explains IMS Health Incorporated.Learn more about Medications & Vitamins
Albuterol sulfate is another name for salbutamol, both of which belong to a class of medications known as bronchodilators that open airways by relaxing muscles in the lungs, indicates WebMD. Albuterol and salbutamol are generic names for proprietary brands of this medication. The official generic name of the drug in the United States is albuterol sulfate, while the World Health Organization prefers the name salbutamol sulfate.Full Answer >
Architecture is the practice of designing and creating buildings and other structures, according to the Encyclopaedia Britannica. One of architecture's key characteristics is that it involves both form and function, which means that an architect must design a structure that is both useful and aesthetically pleasing. This requirement separates architecture from construction, which only involves putting up a structure that is functional.Full Answer >
The chemical formula for phosphoric acid is H3PO4, according to the Encyclopaedia Britannica. Phosphoric acid is also known as orthophosphoric acid. It has been used in fertilizers, dental cements, food flavorings and textiles.Full Answer >
Hydrogen, nitrogen, carbon and oxygen are the main elements that make up amino acids, the basic building blocks of proteins, according to the Encyclopaedia Britannica. Other elements that can appear in proteins after post-translational modification are sulfur and selenium, Wikipedia adds.Full Answer >