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.
Tender Breasts. Taking Plan B can affect your next menstrual period. The hormones in emergency contraceptive pills prevent ovulation and alter the uterine lining.Because of this, you may notice some changes in the symptoms of your period. Tender breasts may or may not be a routine side effect of your impending period.After taking Plan B, the likelihood that your breasts will become sore or tender is high. The discomfort should be alleviated at the beginning of your period.ender breasts may or may not be a routine side effect of your impending period. After taking Plan B, the likelihood that your breasts will become sore or tender is high. The discomfort should be alleviated at the beginning of your period.