7.3 2.3.4 summary

Summary

• Nutrients and oxygen are required by cells for cellular respiration. These are transported by blood to the various cells.
• Carbon dioxide and other wastes need to be transported from the cells to the exterior. This is also transported via blood.
• Blood is pumped through the heart under high pressure to the various parts of the body.
• The heart is divided into the left side of the heart and the right side of the heart.
• The left side receives deoxygenated blood from the body via veins and sends it to the lungs to be oxygenated.
• The right side of the heart receives oxygenated blood from the lungs and sends it via arteries to all parts of the body.
• The lymphatic system is composed of lymph vessels, lymph nodes, and organs.
• Lymph vessels assist the circulatory system and all the cells of the body by removing wastes, germs and excess water from the tissue fluid.