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Thiamine, also known as thiamin and vitamin B 1, is a vitamin – an essential micronutrient for humans and animals. [1] [3] [4] It is found in food and commercially synthesized to be a dietary supplement or medication. [1] Phosphorylated forms of thiamine are required for some metabolic reactions, including the breakdown of glucose and amino ...
Dietary supplements containing all eight are referred to as a vitamin B complex. Individual B vitamins are referred to by B-number or by chemical name, such as B 1 for thiamine, B 2 for riboflavin, and B 3 for niacin, [1] [2] while some are more commonly recognized by name than by number, such as pantothenic acid (B 5), biotin (B 7), and folate ...
The heart is the driver of the circulatory system, pumping blood through rhythmic contraction and relaxation. The rate of blood flow out of the heart (often expressed in L/min) is known as the cardiac output (CO). Blood being pumped out of the heart first enters the aorta, the largest artery of the body.
In general, decrease in blood flow to the brain can be a result of thrombosis causing a partial or full blockage of blood vessels, hypotension in systemic circulation (and consequently the brain), or cardiac arrest. This decrease in blood flow in the cerebral vascular system can result in a buildup of metabolic wastes generated by neurons and ...
Thiamine deficiency is a medical condition of low levels of thiamine (vitamin B 1). [1] A severe and chronic form is known as beriberi. [1] [7] The name beriberi was possibly borrowed in the 18th century from the Sinhalese phrase බැරි බැරි (bæri bæri, “I cannot, I cannot”), owing to the weakness caused by the condition.
Vitamin B 1 analogues are analogues of vitamin B 1, thiamine. They typically have improved bioavailability relative to thiamine itself, and are used to treat conditions caused by vitamin B 1 deficiency. These conditions include beriberi, Korsakoff's syndrome, Wernicke's encephalopathy and diabetic neuropathy.
Hemolymph fills all of the interior (the hemocoel) of the animal's body and surrounds all cells. It contains hemocyanin, a copper-based protein that turns blue when oxygenated, instead of the iron-based hemoglobin in red blood cells found in vertebrates, giving hemolymph a blue-green color rather than the red color of vertebrate blood. When not ...
In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).