explain how the cardiovascular and respiratory systems work together to deliver oxygen to the body.

Brief Explanations:

The respiratory system takes in oxygen from the air through inhalation into the lungs. Oxygen diffuses from the alveoli in the lungs into the blood in the capillaries. The cardiovascular system then pumps this oxygen - rich blood by the heart to the rest of the body's tissues through arteries. Tissues use the oxygen for cellular respiration and carbon - dioxide is produced as a waste. The carbon - dioxide diffuses into the blood, is carried back to the lungs by the cardiovascular system and exhaled out by the respiratory system.

Answer:

The respiratory system inhales oxygen into the lungs where it diffuses into the blood. The cardiovascular system then pumps the oxygen - rich blood to the body's tissues. After tissues use the oxygen, carbon - dioxide is carried back by the cardiovascular system to the lungs for exhalation by the respiratory system.