Which action is one of the main functions of the circulatory system?
Which statements are true about the flow of blood in the body? Check all that apply.Blood picks up oxygen from the cells of the body.Blood delivers carbon dioxide to cells in the body.Blood picks up carbon dioxide from the cells of the body.Blood flows from the heart to the lungs to pick up oxygen.Blood delivers sugar and nutrients to cells in the body.Blood flows from the lungs to the heart to pick up oxygen.
Which structure of the respiratory system connects the pharynx to the trachea?
Which statements explain the gas exchange that happens at the alveoli? Check all that apply.Carbon dioxide moves from the air in the alveoli to the blood.Carbon dioxide moves from the blood to the air in the alveoli.The capillaries that surround the alveoli exchange both carbon dioxide and oxygen.The capillaries that surround the alveoli exchange only oxygen.Oxygen is absorbed by the blood in the capillaries that surround the alveoli.Oxygen is the air we breathe out when we exhale.
red blood cell:
white blood cell:
platelet:
plasma:
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