Circulatory System: transports nutrients and gasses to cells and tissues throughout body.
Digestive System: breaks down food polymers into smaller molecules to provide energy for the body.
- Primary organs: mouth, stomach, intestines, rectum
- Accessory organs: teeth, tongue, liver, pancreas
Endocrine System: helps to maintain growth and homeostasis within the body.
- pituitary gland, pineal gland, hypothalamus, ovaries, testes, thyroid gland
Integumentary System: protects the internal structures of the body from damage, prevents dehydration, stores fat and produces vitamines and hormones.
- skin, nails, hair, sweat glands
Nervous System: monitors and coordinates internal organ function and responds to changes in the external environment.
Reproductive System: enables the production of offspring through sexual reproduction.
- Male: testes, scrotum, penis, vas deferens, prostate
- Female: ovaries, uterus, vagina, mammary glands
Respiratory System: provides the body with oxygen via gas exchange between air from the outside environment and gases in the blood.
- lungs, nose, trachea, bronchi
Skeletal System: supports and protects the body while giving it shape and form.
- bones, joints, ligaments, tendons, cartilage
Urinary/Excretory Systems: removes wastes and maintains water balance in the body.
- kidneys, urinary bladder, urethra, ureters
It is important to keep in mind that these systems don't just exist as individual units. The final product of these cooperating systems is one unit called the body. Each system depends on the others, either directly or indirectly, to keep the body functioning normally.