1. Organ Systems
By Joseph Brett

2. The skeletal system
The skeletal system supports the body’s structure, organs, anchors muscles and protects organs such as the lungs, brain and heart! The bones make up the organs in this system

3. The Muscle system
The muscle system allows the body to move through contracting and relaxing muscles. They are usually controlled by nerves but some muscles aren’t. all your muscle makes up the organs in this system.

4. The Nervous system
The nervous system is a organ system made up of many neurons that coordinate actions and send signals through the body. The system is made up of the central and peripheral nervous system. The central nervous system contains the brain, spine and retina. The peripheral system is made up of sensory neurons, clusters called ganglia which are connected by nerves. The nervous system helps us feel pain and helps us to feel.

5. The endocrine system
The endocrine system is a system of glands which secretes hormones into the bloodstream. This system sends signals much like the nervous system but this system send them very slowly instead of very very fast. The hormones released help growth etc. the organs in this system are the kidneys, liver, heart, gonads, sweat glands and salivary glands.

6. The circulatory system
The circulatory system passes nutrients, blood cells, hormones and gases etc, around the body’s cells to fight disease and help keep body temperature stable. The system is made up of the heart, blood vessels, blood, veins and arteries.

7. The lymphatic system
The lymphoid system is part of our immune system. The system includes the tonsils, spleen, thymus gland and the bone marrow. It is responsible for transporting faty acids, fat and chyle. It transports white blood cells to the bone marrow.

8. The respiratory system
The respiratory system includes lungs and airways. This system carries out respiration which is the transport of oxygen when we inhale that goes to tissues, then it transports carbon dioxide out of our body’s because it is a harmful gas if we have too much of it.

9. The urinary system
The urinary system produces, stores and eliminates urine. The system includes kidneys, 2 ureters, the bladder and the urethra.

10. The reproductive system
The two systems in men and women combined work together to carry out reproduction. Reproduction is basically making babies. The male fertilizes the females egg cell in the woman’s womb with his sperm from his testicles and penis. The system is made up of the female genitalia (vagina) and the male genitalia (penis and testis).