0
The central chemoreceptors will increase their firing rate in direct response to increases in the level of in the CSF resulting in ventilation?
Wiki User
∙ 15y ago
carbon dioxide; increased
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
How does exercise increase minute ventilation?
Minute ventilation is the amount of oxygen inspired by the body in a minute. It is increased by long term exercise because over time the body becomes more adept at bringing more oxygen in to the lungs to be taken to the working muscles. As tidal volume and breathing rate increases the minute ventilation will increase as more breathes will be needed to be taken to meet the high demand for oxygen. A healthy young person will take around 35-45 breathes per minute where as an athlete may take around 60-70 breaths per minute.
When enthalpy in a system increases what is the reaction considered to be?
When enthalpy in a system increases, the reaction is considered to be endothermic. This means that heat is being absorbed from the surroundings, resulting in an increase in the energy of the system.
When you add heat to a solid does its kinetic energy rise?
Yes the kinetic energy of solid increases resulting in increase of vibration of atoms in their mean positions
Why does pulmonary ventilation increase?
Pulmonary ventilation is the volume air that is breathed in or out in a single minute. It is the sum of the tidal volume (volume of air per breath) and the ventilation rate (the number of breaths per minute). For an individual's pulmonary ventilation to increase, there must be an increase in at least one of these two values. The individual can begin breathing deeper at the same rate (increasing tidal volume) or the individual can begin breathing faster at the same volume (increase ventilation rate) or both.
What happens to volume as temperature changes?
if volume of a gas increases temperature also increases
How does exercise affect pO2 in the muscle cell?
Arterial po2 will not change because it's almost at maximum already. Venous po2 will decrease due to increased oxygen consumption by respiring muscle. Venous and arterial pCo2 will actually either stay the same or fall due to the increased ventilation stimulated by the increased Co2 production by respiring muscles. The increased pCO2 is detected by central and peripheral chemoreceptors and leads to increased ventilation, resulting in increased ventilation - causing pCo2 to remain normal or decrease. This mechanism cannot be used to explain the ventilation increase in light exercise because pCo2 hardly rises at all during light exercise, therefore the chemoreceptors may not be responsible for the mechanism resulting in increased ventilation,
How does the body know to increase ventilation rate during exercise?
The truth is that nobody really knows what causes the increase of ventilaion in exercise and keeps it close to metabolic rate. CO2 is a powerful stimulator of breathing and an increase of CO2 is produced by the body in exercise. This increase however is only found in the venous circulation where there are no chemoreceptors to detect it. All of the know chemoreceptors (aortic, carotid and central chemoreceptors) are found in the arterial side where there is relativly no fluctuation in the partial pressure of CO2. Furthermore, when the chemoreceptors are denervated breathing can still increase as normal. Other possible candidates that are involved in increasing breathing are, muscle chemoreceptors, efferencekopie, proprioreceptors, catecholamines, potassium levels...but all are either unlikley to be a cause or are impossible to measure (e.g. efferencekopie). So the textbooks will tell you that ventilation remains close to metabolic rate, but they dont say (beacuse they dont know) how it is kept close to metabolic rate. For further information on this look at works by Mike Parkes (university of Birmingham, united kingdom).
In COPD the PaCO2 will increase but the ventilation will not increase why?
ecause of air trapping and ineffective alveolar ventilation
How does exercise increase minute ventilation?
Minute ventilation is the amount of oxygen inspired by the body in a minute. It is increased by long term exercise because over time the body becomes more adept at bringing more oxygen in to the lungs to be taken to the working muscles. As tidal volume and breathing rate increases the minute ventilation will increase as more breathes will be needed to be taken to meet the high demand for oxygen. A healthy young person will take around 35-45 breathes per minute where as an athlete may take around 60-70 breaths per minute.
What is hypoxic threshold?
When the aterial PO2 drops and becomes around 60 to 70 mm Hg, an increase in ventilation occurs. This is caused by a low PO2 in the blood and is detected by the carotid bodies (chemoreceptor), because the aortic and central chemoreceptors do not detect a change in arterial PO2
Is hypoxia a cardiac arrhthmia?
Hypoxia-->pCO2 increase-->chemoreceptors are stimulated-->VMC stimulated-->trachyarrythmia
When enthalpy in a system increases what is the reaction considered to be?
When enthalpy in a system increases, the reaction is considered to be endothermic. This means that heat is being absorbed from the surroundings, resulting in an increase in the energy of the system.
Effects of supply and demand?
supply and demand effects the market economy and commodity prices. with a increase in demand commodity price increases resulting in inflation in economy and viceversa, and with increase in supply by producers there is decrease in commodity price resulting in deflation in economy.
Hypercapnia causes minute ventilation to?
increase as the minute ventilation is the amount of carbon dioxide
Why is it that the population in the Philippines increases every year?
Because the increase in population, due to births and immigration, is greater than the decrease due to death and emigration, resulting in a net increase in population.
When you add heat to a solid does its kinetic energy rise?
Yes the kinetic energy of solid increases resulting in increase of vibration of atoms in their mean positions
During a warm up increased body and muscle temperatures promote increases in?
Increases in body and muscle temperatures during warm-up promote blood flow throughout your body, which means an increase in oxygen being carried to the muscles resulting in slowed fatigue and an increase in muscle elasticity resulting in a decreased chance of injury. In short, it promotes increases in blood flow and, in turn, oxygen supply to the muscles and muscle elasticity.
