Figure A-C

sketchfab

The human body is a complex and dynamic system that consists of various organs and tissues that work together to maintain homeostasis. The nervous system, which includes the brain, spinal cord, and peripheral nerves, plays a crucial role in controlling the functions of the body. The skeletal system provides structural support and protection for certain organs, while the muscular system enables movement and maintains posture. The circulatory system transports oxygen and nutrients throughout the body via the heart, arteries, veins, and capillaries. The digestive system breaks down food into smaller molecules that can be absorbed and utilized by the body. The respiratory system brings oxygen into the lungs and removes carbon dioxide from the body. The urinary system removes waste products from the blood and regulates electrolyte balance. The immune system protects the body against pathogens and foreign substances, while the endocrine system produces hormones that regulate various bodily functions.