Protects the organism from injury, disease, and infection; aids in the regulation of temperature, the excretion of wastes, and the reception of sensations
Skeletal system
Bones, joints, cartilage, connective tissue
Provides the framework for the body and works to protect and support the body
Muscular system
Skeletal, smooth, and cardiac muscles
Provides for body movement and support
Nervous system
Brain, spinal cord, peripheral nerves
Coordinates body activities by receiving, interpreting, and conducting messages to all other systems of the body
Special Senses
Eyes, ears, nose, taste buds
Function in receiving sensations such as sight, smell, hearing, and taste
Digestive system
Mouth, pharynx, esophagus, stomach, large and small intestines, accessory organs such as the gallbladder and pancreas
Receives, breaks down, and absorbs food substances and excretes waste products
Circulatory system
Heart, blood vessels, blood, lymphatic tissues
Transports materials throughout the body by carrying oxygen and nutrients in the blood to all the cells of the body and carrying away the wate products of the cells
Respiratory system
Lungs, nose, pharynx, larynx, trachea
Takes in oxygen from the air and gives off carbon dioxide, which is produced by cell metabolism
Urinary system
Kidneys, ureter, bladder, urethra
Serves in removing waste products from the bood and in excreting wastes in the form of urine
Reproductive system
Sex organs and ducts to the outside
Involved with reproduction and childbirth
Endocrine system
Ductless glands, such as the tyroid and pituitary
Serves to regulate various body functions through glands that secrete hormones directly into the blood to slow down or increase the activity of the cells