The term 'urea' is actually the body's way of eliminating Ammonia wastes from cells metabolism. In the blood the urea is a waste product which is eventually excreted through the glomeruli in the kidneys and eventually leaves the body via urine.
The process is called Glomerular Filtration. Also there is a lesser amount of urea excreted in sweat.
Urination
The term 'urea' is actually the body's way of eliminating Ammonia wastes from cells metabolism. In the blood the urea is a waste product which is eventually excreted through the glomeruli in the kidneys and eventually leaves the body via urine. The process is called Glomerular Filtration. Also there is a lesser amount of urea excreted in sweat.
Oxygen diffuses from air into blood through the process of simple diffusion. This occurs in the lungs where oxygen moves from areas of high concentration in the alveoli to areas of lower concentration in the blood capillaries. The concentration gradient allows oxygen to pass through the alveolar walls and enter the blood.
This process is known as glycogenolysis, where stored glycogen in the liver is broken down into glucose and released into the blood to maintain blood glucose levels.
diffusion. Oxygen molecules move from an area of higher concentration in the blood to an area of lower concentration in the stomach cells. This process is driven by the concentration gradient between the two areas.
Humans take oxygen from the air and absorb it into the blood through the process of respiration.
The process is known as coagulation.
If human blood is put in salt water, the water molecules in the human blood will lead to the lower concentration of water molecules. This process is called diffusion- water molecules going from high concentration to low concentration.
Oxygen diffuses from an alveolus to the blood around it because of the concentration gradient between the high oxygen concentration in the alveolus and the lower oxygen concentration in the blood. This process allows oxygen to move from the lungs into the bloodstream for transport to the body's cells.
The higher concentration of potassium in red blood cells is maintained by the sodium-potassium pump, which actively transports potassium into the cell against its concentration gradient using energy from ATP. This process helps regulate the cell's volume and maintain its electrochemical gradient.
Oxygen leaves the blood through the process of diffusion across the alveoli in the lungs into the bloodstream. This occurs due to differences in oxygen concentration between the air in the alveoli and the blood in the capillaries surrounding them.
Carbon dioxide does not reduce the oxygen level in the blood. In fact, carbon dioxide plays a role in the process of gas exchange in the lungs and helps regulate breathing.