1. The Human Body Systems
By: Miss #

2. The Human Body Systems
The human body is like a complex organization that has an important job to get done. In order to get everything done perfectly and on time, it has to use a system. Actually, the human body uses many systems that work side by side.

3. The Body Systems Work Together
The heart is like the president of the organization.
Some of the body's systems are directly connected to the heart, while others are not.
Even if the heart is not directly involved in the system, it still plays a part.
If the heart isn't working, nothing else is working either.
The heart actively participates in the circulatory system, while it just keeps an eye on the respiratory and excretory systems.

4. The Body Systems The Digestive System The Skeletal System
The Circulatory System
The Muscular System
The Nervous System
The Respiratory System

5. The Nervous System

6. Nervous System Nervous system (brain, spinal cord, nerves)
Central Nervous system
Brain
Controls behavior
Spinal cord
Peripheral Nervous System
Nerves
Serves internal organs
Pathway to the brain for the five senses
Helps to respond to the world around you

7. The Brain The Nerves The Spinal Cord Senses
The Nervous System:
Controls all of the activities of the body.
The Brain
The Nerves
The Spinal Cord
Senses
Main Parts:

8. The Central Nervous System (CNS)
Is made up of two organs:
the brain
the spinal cord.
Controls EVERYTHING in the body.

9. The Brain Controls everything in the body
Is made up of more than 10 billion nerves!
The brain is divided into three parts and is protected by the skull.
Cerebrum
Cerebellum
Medulla
The Brain

10. Cerebrum Cerebellum Medulla (Brain Stem) Largest part of your brain.
It controls thought, voluntary movement, memory and learning, and also processes information from the senses.
It is below and to the back of your cerebrum
It controls balance and muscular coordination.
Connects brain to spinal cord.
It controls breathing, heartbeat, and other vital body processes.
Cerebrum
Cerebellum
Medulla (Brain Stem)

12. The spinal cord is a long bundle of white nerve matter that is found in the middle of the spinal column. 
It connects the brain to the body. 
Spinal nerves carry messages between the spinal cord and body parts.
The vertebrae are many bones that protect the nerves in the spinal cord
The Spinal Cord

13. The Peripheral Nervous System (PNS)
Carries messages from the Central Nervous System to the rest of your body.
The Peripheral Nervous System’s job is to connect the Central Nervous System to the rest of your body!
Is made up of the nerves and sense organs.
The Peripheral Nervous System (PNS)
Nerves
Sense Organs

14. Neurons (Nerves) Dendrite: receives messages
Axon terminal: sends messages to the next dendrite
Neurons (Nerves)
Synapse: gap between nerve cells
Soma: Cell Body

16. The sense organs carry messages about the environment to the Central Nervous System.
Most Common Sense Organs:
Eyes
Ears
Nose
Skin
Tongue
The Sense Organs

17. The Digestive System

18. Where Your Food Goes
When you eat your food, do you know where it goes? It goes into your digestive system. Your digestive system is made up of your mouth, pharynx, esophagus, liver, stomach, small intestines, large intestines, appendix, rectum, and anus! That is a lot of parts!

19. Care For Your Digestive System!
Chew your food well and swallow slowly!
Drink plenty of water to help move food through your digestive system!

20. Facts About Your Digestive System
It takes 2 to 3 weeks to digest gum.
Juices in the stomach break down the proteins.
Food stays in your stomach for 2 to 3 hours.
Food goes down your esophagus and into your stomach where juices break down the proteins. Then it goes down your small intestine to the large intestine and gets removed by the digestive system.

21. Get the Picture?

22. Functions Digests the food we eat
Takes the nutrients out of your food so your body can use it
Functions

23. Esophagus Stomach the tube that connects your mouth and your stomach
A stretchy bag that holds your food after you eat
Helps to break food into smaller pieces so your body can use it for energy and nutrition
Stomach

24. Esophagus
Stomach

25. Small intestine Tube that is 20 feet long. Continues to digest food
Food stays in your small intestine for 4 to 8 hours
Small intestine
Small Intestine

26. Large intestine Tube that is 5 feet long
Gets waste from small intestine
Waste stays for 10 to 12 hours
Large intestine
Large Intestine

27. Storage tank for bile (a greenish-yellow liquid) that helps your body break down and use fats
Located under your liver
Shaped like a pear
GALL BLADDER
Gall Bladder

28. Liver Factory for antibodies and bile
Stores vitamins and sugars until your body needs them
Liver
Liver

29. Helps you digest food by breaking down sugars
Pancreas
Pancreas

30. Eat foods that are high in fiber like fruits and vegetables
Drink plenty of water
Chew your food completely before you swallow
Avoid foods high in fat
Healthy Habits

31. The Excretory System

32. The excretory system is the body system that removes excess water, H2O, urea, carbon dioxide, CO2, and other wastes from our blood, usually as urine or sweat.
The Excretory System

33. Kidneys
Liver
Urinary Bladder
Urethra
Ureter
Skin
Lungs
The parts

34. The Kidneys Filters waste and excess water from the blood.
Is about 10 centimeters long
Kidneys regulate the amount of water we need to maintain in our bodies.
The Kidneys
Interesting Fact: Every drop of blood in your body is filtered by your kidneys more than 300 times per day!

35. The liver which changes the ammonia, a poisonous product of protein digestion, into urine

36. Ureter, Urinary Bladder, Urethra
The ureter carries the urine away from the kidneys to the urinary bladder
The Urinary bladder is a sac that stores liquid wastes removed from the kidneys.
The urethra is the tube that carries the urine from the bladder to outside the body
Ureter, Urinary Bladder, Urethra

37. LUNGS
Filter out carbon dioxide, CO2, from the blood.

39. Excretes water, as sweat, which contains some trace chemical wastes, including urea (urea=breakdown of body protein).
SKIN

40. The Respiratory System
Air is breathed in through the nasal cavity and/or mouth and down through the throat (the pharynx). The air passes down the trachea (the windpipe), through the left and right bronchi, and into the lungs. Oxygen in the blood is delivered to body cells.

41. The Circulatory System

42. The Circulatory System
The circulatory system performs many vital functions. Your heart pumps blood and nutrients to tissues all over the body. The circulatory system is also important in the removal of wastes and in several other body processes.

43. The circulatory system
Carries blood to and from body cells

44. The Parts
Heart
Arteries
Veins
Capillaries
Blood

45. The Heart The heart is the main organ of the circulatory system.
The heart's primary function is to pump blood to all parts of the body, bringing nutrients and oxygen to the tissues and removing waste products.

46. In the image below, the arteries are red.
Arteries are blood vessels that carry blood away from the heart.
In the image below, the arteries are red.

47. In the image below, the veins are blue.
Veins are large blood vessels that return blood to the heart.
In the image below, the veins are blue.

48. Capillaries
Are tiny blood vessels that allow gases and nutrients to pass from blood cells.

49. Respiratory System http://www.geeo.org/tours/IndiaNepal/

50. Provides Oxygen
Removes Carbon Dioxide
The RespirtorySystem

51. Function of the Respiratory System
The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing. When we breathe, we inhale oxygen and exhale carbon dioxide. This exchange of gases is how the respiratory system gets oxygen to the blood.

52. LUNGS
Filter out carbon dioxide, CO2, from the blood.

53. The Muscular System is made up of 630 muscles.

54. The Muscular System Helps Your Body Move
Most muscles work together in pairs. One muscle pulls while the other muscle relaxes. When you bend your arm the biceps muscle pulls and the triceps muscle relaxes. When you make your arm straight, the biceps muscle relaxes and the triceps muscle pulls.

55. The Function of Muscles
Muscles are very important. They help you do almost everything — from pumping blood throughout your body to lifting your heavy backpack. You control some of your muscles and others, like your heart, do their jobs without you thinking about them at all.

56. Interesting Facts About Muscles
Muscles are bundles of cells and fibers.
Muscles work in a very simple way. All they do is tighten up--that is, contract--and relax.
You have two sets of muscles attached to many of your bones which allow them to move.
There are 630 active muscles in your body and they act in groups.
Muscles can only pull. They never push.

57. Did you know? You use 17 muscles when you smile.
You use 43 muscles when you frown.

58. The Skeletal System

59. The Skeletal System
The skeletal system is the system that supports us and gives us our shape. 

60. Main Structures of the Skeletal System
Two main structures form the skeletal system: cartilage and bone. 
Cartilage is largely composed of water and contains no nerves or blood vessels. 
Bones are hard on the outside. Inside they are soft, but strong. Red and white blood cells are made inside the bones.