Answer: Pulmonary veins.
Explanation:
Pulmonary vein receives oxygen-rich blood from the lungs into the left atrium where it is pumped into the left ventricle, the aorta and then further distributed to the rest of body.
A normal IV bag contains a saline solution. This means that it contains water mixed with sodium chloride though sometimes it may be water mixed with dextrose. Both of these are additives used to normalize tonicity.
Tonicity is a measurement of osmotic pressure. What this means is that it measures how likely it is for water to be drawn to it and is based on the concentration of solutes. There are 3 measurements for tonicity
- Hypertonic
- Hypotonic
- Isotonic
These measurements tell us whether water is likely to be drawn in, repelled, or not move at all. This will depend on the concentration of solutes and water on the inside and outside of a cell. If a patient is given normal water, the water will dissolve the solutes outside of a cell and cause a pressure gradient that will cause water to be drawn into a cell until it inevitably explodes. This death of the blood cells is known as hemolysis. To avoid this, additives like Dextrose or sodium chloride are added, to equalize tonicity.
Though dextrose is often used, the most common solution for an IV bag is the saline solution made from water and sodium chloride (salt). The addition of additives like salt or dextrose (a type of sugar) is important in order to normalize tonicity and avoid hemolysis.
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Answer: Density affect propagation.
Density is mass per unit volume of a substance.
A substance that is more sense has more mass per unit volume, it will make sound to transmit at slower rate . Less dense substance will allow sound to transmit at higher rates. Density affect the speed a wave will be transmitted through it. The denser the material, the slower wave will be transmitted.
Explanation:
Density is Mass per unit volume. Density affect the propagation of wave. The denser the substance, the slower wave will be transmitted through it. The less dense the material, the higher wave will be transmitted through it. Density affect the speed of wave.