Deoxygenated blood from the body via the vena cava enters the right atrium of the heart. the right atrium pumps the blood via the trucuspid valve into the right ventricle. From the right ventricle, blood is pumped into the pulmonary trunk via the pulmonic valve to the lungs. Oxygenated blood from the lungs enters the left atrium via the pulmonary veins. The left atrium pumps the blood to the left ventricle via the mitral valve. The left ventricle pumps this blood via the aortic valve to the aorta which distribute the blood to the rest of the body
Vena cava - right atrium - tricuspid valve - right ventricle - pulmonary artery/trunk - lungs - pulmonary veins - left atrium - mitral valve - left ventricle - aortic valve - aorta - rest of body.
Your immune system uses a huge army of defender cells - different types of white blood cell. You make about 1000 million of them every day in your bone marrow. Some of these cells, called macrophages, constantly patrol your body, destroying germs as soon as they enter. This is your 'natural' or inborn immunity. But if an infection begins to take hold, your body fights back with an even more powerful defence of T- and B-cells. They give you acquired immunity, so that the same germ can never make you as ill again.
Some types of fish and shellfish contain healthy omega oils that will help the development of the fetus's nervous system. However, some contain toxins and possibly viruses (oysters, for example) and must be avoided during pregnancy.
Answer: The surrounding cells detect the higher glucose levels and signal the pancreas to secrete a hormone called insulin.
Explanation:
Electrolyte imbalance, blood test results showing low levels may lead to: irregular heartbeat, confusion, blood pressure changes, nervous system or bone disorders.
