1.Red blood cells carry nutrition and oxygen through the capillaries to the tissues. 2. Oxygen is inhaled from the atmosphere to alveoli. 3. Oxygen diffuses into the pulmonary capillaries carried by hemoglobin through the systemic capillaries to the cells. 4. Hemoglobin gives up oxygen and picks up carbon dioxide by diffusion.
Pre-menstrual symptoms (PMS) are the symptoms that a woman may experience one or two weeks before her period begins. PMS is more common in women of age group 30 to 40. About 80% of women experience mild or severe premenstrual symptoms before each period.
1 This can also be a cause of sharp pain in the ovary area. â 2 ÅMiddle Åmiddleâ pain is also one of the causes of sharp pain in ovary before period. 3  Begins it occurs 14 to 16 days before menstruation. 4  Period the pain in the ovary fades after a few hours or can even take a.  day