ORGAN SYSTEMS
DIGESTIVE
Major Roles: To breakdown and absorb nutrients that are necessary for growth and maintenance.
Major Organs: Mouth, esophagus, stomach, small and large intestines.
Major Roles: To breakdown and absorb nutrients that are necessary for growth and maintenance.
Major Organs: Mouth, esophagus, stomach, small and large intestines.
REPRODUCTIVE
Major Roles: To manufacture cells that allow reproduction. In the male, sperms are created to inseminate egg cells produced in the female.
Major Organs: Female: ovaries, oviducts, uterus, vagina and mammary glands.
Male: testicles, seminal vesicles and pennies.
RESPIRATORY
Major Roles: To provide gas exchange between the blood and the environment. Primarily, oxygen is absorbed from the atmosphere into the body and carbon dioxide is expelled from the body.
Major Organs: Nose, trachea and lungs.
CIRCULATORY
Major Roles: To transport nutrients, gases (such as oxygen and CO2), hormones and wastes through the body.
Major Organs: Heart, blood vessels and blood.
LYMPHATIC
Major Roles: To destroy and remove invading microbes and viruses from the body. The lymphatic system also removes fat and excess from the blood.
Major Organs: Lymph (fluid), lymph nodes and vessels, white blood cells, T- and B-cells.
EXCRETORY
Major Roles: To filter out cellular wastes, toxins, and excess water or nutrients from the circulatory system.
Major Organs: Kidneys, ureters, bladder and urethra, skin.
Major Roles: To destroy and remove invading microbes and viruses from the body. The lymphatic system also removes fat and excess from the blood.
Major Organs: Lymph (fluid), lymph nodes and vessels, white blood cells, T- and B-cells.
EXCRETORY
Major Roles: To filter out cellular wastes, toxins, and excess water or nutrients from the circulatory system.
Major Organs: Kidneys, ureters, bladder and urethra, skin.
NERVOUS
Major Roles: To relay electrical signals through the body. It directs behavior and movement and, along with the endocrine system, control psychological processes such as digestion, circulation, etc.
Major Organs: Brain, spinal cord and peripheral nerves.
MUSCULAR
Major Roles: To provide movement. Muscles work in pairs to move limbs and provide the organism with mobility. Muscles also control the movement of materials through some organs, such as the stomach and intestine, and the heart and circulatory system.
Major Organs: Skeletal muscles and smooth muscles throughout the body.
SKELETAL
Major Roles: To provide support for the body, to protect delicate internal organs and to provide attachment sites for the organs.
Major Organs: Bones, cartilage, tendons and ligaments.
ENDOCRINE
Major Roles: To relay chemical messages through the body. In conjunction with the nervous system, these chemical messages help control physiological processes such as nutrient absorption, growth, etc.
Major Organs: Ovaries and Testicles, Pancreas, Parathyroid glands, Pineal body, Pituitary Gland, Thymus Gland, Thyroid Gland, Adrenal Glands, Hypothalamus.
