State the systems of the human body

The human body is composed of several organ systems that work together to maintain life. These include:

1. Integumentary System: Skin, hair, nails, and glands. Protects the body and regulates temperature.
2. Skeletal System: Bones, cartilage, and ligaments. Provides support, protection, and allows movement.
3. Muscular System: Muscles. Enables movement, posture, and heat production.
4. Nervous System: Brain, spinal cord, and nerves. Controls and coordinates body functions.
5. Endocrine System: Glands that produce hormones. Regulates metabolism, growth, and reproduction.
6. Cardiovascular System: Heart and blood vessels. Transports blood, oxygen, and nutrients.
7. Lymphatic System: Lymph nodes, vessels, and organs. Returns fluid to the blood and defends against pathogens.
8. Respiratory System: Lungs and airways. Facilitates gas exchange (oxygen and carbon dioxide).
9. Digestive System: Mouth, esophagus, stomach, intestines, and accessory organs. Breaks down food and absorbs nutrients.
10. Urinary System: Kidneys, ureters, bladder, and urethra. Filters waste from blood and eliminates urine.
11. Reproductive System: Gonads and associated organs. Produces offspring.