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Anatomical systems or organ system are systems of anatomically related structures.

Psychologists are interested in these systems to the extent that they alter, cause, facilitate, mediate, and/or suppress thoughts, feelings, behavior and other psychological phenomena.

Organs within a system may be related in any number of ways, but relationships of function are most commonly used. For example the urinary system comprises organs that work together to produce, store, and carry urine.

The functions of organ systems often share significant overlap. For instance, the nervous and endocrine system both operate via a shared organ, the hypothalamus. For this reason, the two systems are combined and studied as the neuroendocrine system. The same is true for the musculoskeletal system, which involves the relationship between the muscular and skeletal systems.

The anatomy of individual organisms can be seen to consist of a number of interrelated anatomical systems. These functioning of these systems may give rise to , or be affected, by psychological phenomena These include:

See also

Biological systems]]

Human organ systems
Cardiovascular system - Digestive system - Endocrine system - Immune system - Integumentary system - Lymphatic system - Muscular system - Nervous system - Skeletal system - Reproductive system - Respiratory system - Urinary system