Organ system

In biology, an organ system is a group of organs that work together to perform one or more functions. Each does a particular job in the body, and is made up of certain tissues.

An example of a system: the nervous system

Organs and their tissue systems

These specific systems are widely studied in anatomy. They are present in many types of animals.

Circulatory system: pumping and channeling blood to and from the body and lungs with heart, blood and blood vessels.
Integumentary system: The skin, hair, fat, and nails.
Skeletal system: structural support and protection with bones, cartilage, ligaments and tendons.
Reproductive system: the sex organs, such as ovaries, fallopian tubes, uterus, vagina, mammary glands, testes, vas deferens, seminal vesicles and prostate
Digestive system: digestion and processing food with salivary glands, esophagus, stomach, liver, gallbladder, pancreas, intestines, rectum and anus.
Urinary system: kidneys, ureters, bladder and urethra involved in fluid balance, electrolyte balance and excretion of urine.
Respiratory system: the organs used for breathing, the pharynx, larynx, bronchi, lungs and diaphragm.
Endocrine system: communication within the body using hormones made by endocrine glands such as the hypothalamus, pituitary gland, pineal gland, thyroid, parathyroid and adrenal glands.
Immune system: protects the organism from outside Organisms like bacteria, viruses, fungi, and toxins (chemicals made by toxic cells) with proteins called antibodies.
- Lymphatic system: the transfer of lymph between tissues and the blood stream; includes the lymph and the nodes and vessels. The system includes the functions of immune responses and the development of antibodies.
Muscular system: allows for manipulation of the environment, provides locomotion, maintains posture, and produces heat. Includes skeletal muscles, smooth muscles and cardiac muscle.
Nervous system: collecting, transferring and processing information with brain, spinal cord and peripheral nervous system.