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Why does lactate accumulate in the blood during bursts of very vigorous exercise?
Lactate accumulates because of the lack of available oxygen in the muscles. In anaerobic conditions, the pyruvate produced by glycolysis is reduced to lactate via lactate dehydrogenase (while also oxidizing a single molecule of NADH to regenerate NAD+). NAD+ is a very important molecule and must readily be available in the cytoplasm in order for glycolysis to proceed.
What is the relation between lactate threshold and ventilatory threshold?
They both are reached are approx the same time, it is thought to be that the large change (drop) in blood pH when the lactate threshold is reached is causes ventilation to increase rapidly to try and counteract this blood pH change. The lactate threshold itself is just the point at which lactate removal can no longer keep up with lactate production.
Where does blood enter and leave the kidney in the process of filtration and waste removal?
Blood enters the kidney through the renal artery and leaves through the renal vein after the process of filtration and waste removal.
When both ovary are removed from rat then which hormone is decreased in blood?
When both ovaries are removed from a rat, the hormone that is decreased in the blood is estrogen. The ovaries are responsible for the production of estrogen, so their removal leads to a decrease in estrogen levels in the bloodstream.
What organs are capable of turning lactate in glucose?
The liver is the main organ responsible for converting lactate into glucose through a process called gluconeogenesis. This process helps maintain blood glucose levels and provide energy to the body during times of high energy demand or low glucose availability.
What is the blood Tube color for lactate?
The blood tube color for lactate testing is typically a green or light green top tube, which contains sodium or lithium heparin as an anticoagulant. These tubes are used to prevent clotting of the blood sample during testing for lactate levels.
What is alactacid mechanism?
The involvement of the lactacid and alactacid mechanisms in oxygen debt was examined in 2 dogs prior to and after a 6-week training program by using tryptophan and quinolinic acid to block the removal of lactate by the liver. The results show that the lactacid mechanism is involved at work loads resulting in sufficient elevation of blood lactate during the recovery period. It was further shown that training produced a significant decrease in both oxygen debt and blood lactate. Mechanisms responsible for the findings are discussed.
How glucose is removed from blood?
kidneysInsulin causes glucose to be removed from the blood and stored. Insulin is a hormone that is produced by the pancreas.
What is lactate dehydrogenase?
Lactate dehydrogenase is an enzyme present in the body that plays a key role in converting lactate to pyruvate during energy production. It is found in various tissues, including the heart, liver, muscles, and red blood cells. Elevated levels of lactate dehydrogenase in the blood can indicate tissue damage or disease.
Is body temperature elevated or decreased with vasoconstriction?
Body temperature is typically decreased with vasoconstriction because this process involves the constriction of blood vessels, which decreases blood flow to the skin and can reduce heat loss through the skin.
What is the medical terminology Removal of a blood clot?
embolismIt depends how and where the clot is. Embolectomy is carried out for removing clots in arteries. Thrombectomy is an open operation for removal of clots from vessels, and Craniotomy is done for removal of clots from the brain in head injuriesThis process is known as coagulation. The blood platelets makes this process possible.
What is the approximate blood lactate level in mmol at the anaerobic threshold?
The anaerobic threshold, also known as the lactate threshold, is typically associated with blood lactate levels of approximately 2 to 4 mmol/L. At this point, the body begins to produce lactate at a rate that exceeds its clearance, leading to an accumulation in the bloodstream. The exact level can vary depending on the individual’s fitness level and exercise intensity.
