Circulatory System (ms ice ver)

• Veins - are blood vessels located throughout your body that collect oxygen-poor blood and return it to your heart.
• Arteries -are the blood vessels that bring oxygen-rich blood from your heart to all of your body's cells;  pulse can be detected most easily
• Capillaries - are the smallest blood vessels in the circulatory system. These are the vessels that bring oxygen and nutrients to cells in exchange for carbon dioxide and waste that they take from cells.
• Leukocytosis - condition wherein  the number of white cells in your blood is higher than normal
• Leukemia - cancer of the body's blood-forming tissues, including the bone marrow and the lymphatic system
• • Leukopenia - condition in which there is a decrease in the number of white blood cells in humans
• Hypotension - is when your blood pressure is much lower than expected (120/80mmHg)
• Hypertension - when the pressure in your blood vessels is too high (140/90 mmHg or higher)
• Erythrocytes- are produced in our red bone marrow where they typically live for about 120 days. The red blood cell's main function is to carry oxygen from the lungs and deliver it throughout our body. (it takes 7 weeks for the body reserve of red corpuscles to be replaced)
• Thrombocytes - are small, colorless cell fragments in our blood that form clots and stop or prevent bleeding. Platelets are made in our bone marrow, the sponge-like tissue inside our bones.
• Leukocytes -  are part of the immune system, participating in both the innate and humoral immune responses. They circulate in the blood and mount inflammatory and cellular responses to injury or pathogens.