blood

• when blood glucose level is too low glucagon is added
• when blood glucose is too high insulin is added
• after meals, glucose in the body is higher, therefore, insulin makes the liver turn glucose into glycogen
• glucagon makes the liver turn glycogen into glucose
• excess glucose can be stored as glycogen in the liver and in the muscles
• • Glycogen serves as a readily available source of glucose for the body during times of need, such as between meals or during periods of increased energy demand.
• the higher concentration of blood glucose in the hepatic portal vein is because of blood with glucose being absorbed from the intestine
• the lower concentration of blood glucose in the hepatic vein is because of insulin converting glucose into glycogen
• the hepatic vein is lower in blood glucose concentration because most of the glucose has been absorbed from the intestine
• if a person does not eat for a few hours:

  • the concentration of glucose in the veins is higher
  • because glycogen made in the pancreas
  • causes glycogen to be converted into glucose,
  • the glucose is then released into the blood
• amino acids that cannot be stored in the body are broken down, then formed into urea in the liver, then filtered by the kidney and then stored in the bladder
• protein molecules are too large to pass through the filter, therefore cannot be found in the urine of a healthy person
• Glucagon is a hormone your pancreas makes that triggers glycogen to convert back into glucose and to enter your bloodstream so your body can use it for energy.