
  1. The respiratory system or ventilatory system is a biological system consisting of specific organs and structures used for the process of respiration in an organism. The respiratory system is involved in the intake and exchange of oxygen and carbon dioxide between an organism and the environment.


  1. The integumentary system is the organ system that protects the body from various kinds of damage, such as loss of water or abrasion from outside. The system comprises the skin and its appendages including hair, scales, feathers, hooves, and nails.
  1. The excretory system is the system of an organism's body that performs the function of excretion, the bodily process of discharging wastes. The Excretory system is responsible for the elimination of wastes produced by homeostasis.
  1. The nervous system helps all the parts of the body to communicate with each other. The brain and spinal cord make up the central nervous system. The other nerves of the body are called the peripheral nervous system.
  1. The urinary system, also known as the renalsystem, consists of the two kidneys, ureters, the bladder, and the urethra. Each kidney consists of millions of functional units called nephrons. liquid waste.           

BONES SUPPORT Femur Bears weight of upper body Shoulder girdle Supports arms 3. For Protection of Vital Organs The skeletal system protects the body by enclosing the vital organs such as the brain, marrow, lungs, heart and other internal organs.



  1. The immune system is a system of biological structures and processes within an organism that protects against disease. To function properly, animmune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue.

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they work all together by your body work like machine if one