1. A review of the functions and purpose of all body systems
Human body systems
A review of the functions and purpose of all body systems

2. Skeletal system

3. Skeletal system
Bones give your body structure, let you move in many ways, protect your internal organs, and more.
Although bones in museums are dry, hard, or crumbly, the bones in your body are different.
The bones that make up your skeleton are all very much alive, growing and changing all the time like other parts of your body.
Let’s name some bones together and organs they protect.

4. More Skeletal System An adult has 206 bones.
Babies have more bones than adults, but as they grow the bones grow together.
Blood cells are produced inside of your bone marrow.

5. Muscular system

6. Muscular system
Muscles are all made of the same material, a type of elastic tissue (sort of like the material in a rubber band).
Thousands, or even tens of thousands, of small fibers make up each muscle.
You have three different types of muscles in your body: smooth muscle, cardiac (say: kar-dee-ak) muscle, and skeletal (say: skel-uh-tul) muscle.

7. Smooth muscles
Smooth Muscles-Smooth muscles are usually in sheets, or layers, with one layer of muscle behind the other. You can't control this type of muscle It’s called an involuntary muscle. Your brain and body tell these muscles what to do without you even thinking about it.

8. Cardiac Muscles
Cardiac Muscles-The thick muscles of the heart contract to pump blood out and then relax to let blood back in after it has circulated through the heart. These are also involuntary muscles; they work on their own.

9. Skeletal Muscles
Skeletal Muscles-the skeletal muscles work with your bones to give your body power and strength. In most cases, a skeletal muscle is attached to one end of a bone. It stretches all the way across a joint and then attaches again to another bone. Skeletal muscles are voluntary. We tell them when to work and move.

10. Respiratory system

11. Respiratory system
Your respiratory system is made up of the organs in your body that help you to breathe. Remember, that Respiration = Breathing. The goal of breathing is to deliver oxygen to the body and to take away carbon dioxide.
Oxygen is carried from your nosepharynxepiglottislarynxtracheabronchilungsalveoli
Alveoli helps exchanged oxygen and carbon dioxide

12. Circulatory (A.K.A. Cardiovascular) system

13. Your heart

14. Circulatory (A.K.A. Cardiovascular) system
The Circulatory System is responsible for transporting materials throughout the entire body.
It transports nutrients, water, and oxygen to your billions of body cells and carries away wastes such as carbon dioxide that body cells produce.
It is an amazing highway that travels through your entire body connecting all your body cells.
The circulatory system is divided into three major parts: the heart, the blood, the blood vessels.

15. Digestive system

16. Digestive System
The primary function of the digestive system is to break down the food we eat into smaller parts so the body can use them to build and nourish cells and provide energy.
The digestive system consists of: mouththroatesophagusstomachsmall intestinepancreaslivergallbladderlarge intestinerectum

17. Nervous system

18. The brain

19. Nervous system
Your brain is the boss of your body. It runs the show and controls just about everything you do, even when you're asleep. Not bad for something that looks like a big, wrinkly, gray sponge.
Your brain has many different parts that work together. We're going to talk about these five parts, which are key players on the brain team: cerebrum, cerebellum, brain stem, pituitary gland, hypothalamus.

20. More Nervous System
The cerebrum is the largest part of the brain. It is responsible for memory, speech, the senses, emotional response, and more. It is divided into several sections called lobes. These lobes are referred to as the frontal, temporal, parietal, and occipital; each handles a specific segment of the cerebrum's jobs.
The cerebellum  is below and behind the cerebrum and is attached to the brain stem. It controls motor function, the body's ability to balance, and its ability to interpret information sent to the brain by the eyes, ears, and other sensory organs.
The functions the brain stem governs include respiration, blood pressure, and some reflexes.

21. Nervous System Although the brain is protected by the
skull, it can still suffer damage, become
diseased or malfunction. These problems
may include cancer, physical injuries such
as skull fractures, and ruptures of blood
vessels that supply the brain.
What are some things you can do to
protect your brain from becoming injured?
The nervous system is also made up of your spinal cord and your nerves. The spinal cord and brain transmit signals to your nerves and tells your body what to do.

22. Integumentary System (SKIN)

23. skin
The skin is the largest organ of the body. The skin and its derivatives (hair, nails, sweat and oil glands) make up the integumentary system.
One of the main functions of the skin is protection. It protects the body from external factors such as bacteria, chemicals, and temperature.

24. SKin
The skin contains secretions that can kill bacteria and the pigment melanin provides a chemical pigment defense against ultraviolet light that can damage skin cells.
Another important function of the skin is body temperature regulation
Name some ways you can
help keep your skin healthy.