Examples of turgor pressure in the following topics:
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- This inflow of water produces turgor pressure, which stiffens the cell walls of the plant.
- In nonwoody plants, turgor pressure supports the plant.
- Plants lose turgor pressure in this condition and wilt .
- Without adequate water, the plant on the left has lost turgor pressure, visible in its wilting; the turgor pressure is restored by watering it (right).
- The turgor pressure within a plant cell depends on the tonicity of the solution in which it is bathed.
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- Pressure potential is also called turgor potential or turgor pressure and is represented by Ψp.
- Positive pressure inside cells is contained by the cell wall, producing turgor pressure in a plant.
- Turgor pressure ensures that a plant can maintain its shape.
- A plant's leaves wilt when the turgor pressure decreases and revive when the plant has been watered .
- When (b) the total water potential is higher outside the plant cells than inside, water moves into the cells, resulting in turgor pressure (Ψp), keeping the plant erect.
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- The N-terminal domain of this protein forms part of the cytoplasmic region of the protein, which may be the sensor domain responsible for sensing turgor pressure.
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- Pressure is often measured as gauge pressure, which is defined as the absolute pressure minus the atmospheric pressure.
- Gauge pressure is a relative pressure measurement which measures pressure relative to atmospheric pressure and is defined as the absolute pressure minus the atmospheric pressure.
- Most pressure measuring equipment give the pressure of a system in terms of gauge pressure as opposed to absolute pressure.
- For example, tire pressure and blood pressure are gauge pressures by convention, while atmospheric pressures, deep vacuum pressures, and altimeter pressures must be absolute.
- Explain the relationship among absolute pressure, gauge pressure, and atmospheric pressure
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- Measurement of blood pressure includes systolic pressure during cardiac contraction and diastolic pressure during cardiac relaxation.
- Blood pressure is the pressure blood exerts on the arterial walls.
- These pressures are called segmental blood pressures and are used to evaluate blockage or arterial occlusion in a limb (for example, the ankle brachial pressure index).The difference between the systolic and diastolic pressure is called the pulse pressure.
- A blood pressure cuff and associated monitor used for determining systolic and diastolic pressures within an artery.
- Explain how blood pressure is measured and the ranges of blood pressure readings
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- Blood pressure is a vital sign, reflecting the pressure exerted on blood vessels when blood is forced out of the heart during contraction.
- Blood Pressure is the pressure that blood exerts on the wall of the blood vessels.
- Therefore, the systolic pressure will show the pressure that your heart emits when blood is forced out of the heart, while diastolic pressure is the pressure exerted when the heart is relaxed.
- When used without further specification, "blood pressure" usually refers to the arterial pressure of the systemic circulation.
- During each heartbeat, blood pressure varies between a maximum (systolic) and a minimum (diastolic) pressure.
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- Gas pressures in the atmosphere and body determine gas exchange: both O2 and CO2 will flow from areas of high to low pressure.
- Each gas component of that mixture exerts a pressure.
- The pressure for an individual gas in the mixture is the partial pressure of that gas.
- The pressure of the water vapor in the lung does not change the pressure of the air, but it must be included in the partial pressure equation.
- For this calculation, the water pressure (47 mm Hg) is subtracted from the atmospheric pressure: 760 mm Hg 47 mm Hg = 713 mm Hg, and the partial pressure of oxygen is: (760 mm Hg 47 mm Hg) 0.21 = 150 mm Hg.
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- In practice, pressure is most often measured in terms of gauge pressure.
- Gauge pressure is the pressure of a system above atmospheric pressure.
- Gauge pressure is much more convenient than absolute pressure for practical measurements and is widely used as an established measure of pressure.
- Barometers are devices used to measure pressure and were initially used to measure atmospheric pressure.
- Many modern pressure measuring devices are pre-engineered to output gauge pressure measurements.
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- The measurement of blood pressure, without further specification, usually refers to systemic arterial pressure measured at the upper arm.
- The measurement of blood pressure without further specification usually refers to the systemic arterial pressure which is
defined as the pressure exerted by circulating blood upon the walls of blood vessels.
- Pressure is typically measured with a blood pressure cuff or
sphygmomanometer wrapped around a person's upper arm which measured the pressure in the brachial artery.
- A person's blood pressure is usually expressed in terms of the systolic pressure over diastolic pressure and is measured in millimeters of mercury (mmHg), for example 140/90.
- In the past, most attention was paid to diastolic pressure; but nowadays it is recognized that both high systolic pressure and high pulse pressure (the numerical difference between systolic and diastolic pressures) are also risk factors.
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- Blood pressure is the pressure of blood against the blood vessel walls during the cardiac cycle; it is influenced by a variety of factors.
- Blood pressure is the pressure of the fluid (blood) against the walls of the blood vessels.
- Fluid will move from areas of high to low hydrostatic pressures.
- The systolic pressure is defined as the peak pressure in the arteries during the cardiac cycle; the diastolic pressure is the lowest pressure at the resting phase of the cardiac cycle.
- The blood pressure of the systole phase and the diastole phase gives the two readings for blood pressure .