Human physiology for beginners
Human Physiology: How the Human Body Works Every Day Human physiology is the study of how the human body functions. From breathing and digestion to movement and thinking, physiology explains how different systems in our body work together to keep us alive and healthy. Even when we are resting, our body is constantly active, performing thousands of processes every second. The Circulatory System : Transporting Life The circulatory system includes the heart, blood, and blood vessels . Its main job is to transport oxygen, nutrients, hormones, and waste products throughout the body. The heart acts like a pump, pushing blood through arteries, veins, and capillaries . Oxygen-rich blood is delivered to cells, where it is used to produce energy, while waste products like carbon dioxide are carried away for removal. The Respiratory System: Breathing and Gas Exchange Breathing is controlled by the respiratory system, which includes the lungs, diaphragm, and airways. When we inhale, oxygen enters...