1. Why do people pass gas, and what causes its odor?
Intestinal gas (Flatus)
Consist of:
Nitrogen, oxygen, and carbon dioxide (air you swallow)
Hydrogen and Methane (bacteria from food)
Foods that contain sulfur
Cauliflower, eggs, and meat

3. Order of digestion Mouth Esophagus
Stomach – Break down of food with ACID
Small Intestine – Send nutrients to blood
Large Intestine – Absorb water
Anus – Elimination of waste

4. Fun facts Liver - largest organ in the body.
Small Intestine = 22ft long / 1 half inches round
Food stays in your stomach for 2 -3 hours.
Takes 20 hours to digest food.

5. Cardiovascular System7. 8. 1. 9.
2. Valve
10. 3.
Valve 11.
4. Valve
Valve 12. 5.
13. 6.
14.

6. Arteries Carry blood AWAY from heart Largest is Aorta
Shown in Red- Oxygenated

7. Veins Carry blood TO heart Shown in blue - Non-oxygenated Largest are:
Superior Vena Cava
Inferior Vena Cava

8. Capillaries Smallest Blood Vessels Connect Veins and Arteries.
Thin Walls
Oxygen, Nutrients, & CO2 can be transferred.

9. Heart Video

10. Order of Blood Flow Right Atrium Right Ventricle Pulmonary Artery
After your muscles/organs use blood….
Right Atrium
Right Ventricle
Pulmonary Artery
Lungs (to get oxygen)
Left Atrium
Left Ventricle
Aorta
Back to your muscles/organs.

11. What color is your blood?
Red?
Blood outside the body is red because of the red blood cells.
They contain hemoglobin (iron containing protein) that turns bright red when in contact with oxygen.
BLUE?
When seen through colorless veins under the skin, however, it appears blue because of the way your skin absorbs light.
Maroon?
Without oxygen red cells take on a dark maroon color.

12. * O blood = Universal blood; neither Antigen; can donate to any type!

14. Fun facts Whose heart beats faster? Girls? Boys?
How much does the heart weigh?
In one minute how many quarts of blood does the heart pump?
In one day how many gallons of blood does the heart pump?
What is the average lifetime of a heart beat?
The heart does enough work to lift?
Girls (male hearts are bigger, pumping more blood in single beat)
9-11 ounces
5 quarts of blood
2,500 gallons of blood
2.5 billion times
3,000lb car

15. How does the heart know how fast to beat?
EXIT SLIP
How does the heart know how fast to beat?
How does each section of the heart contribute to the oxygenation of our blood?

16. Urinary System removing waste
All body tissues depend entirely on the correct composition of the blood, which the urinary system works to maintain.
Pituitary gland (brain) and kidneys work together
Send hormones to kidneys when blood is not balanced

17. How does the bladder know when to empty?
Bladder stretches and expand as urine collects inside.
Nerves will send a signal to the brain when the bladder is full.
Brain signals the sphincter, to relax.

18. Urinary system Male Female Urethra 4 times longer than females.
Conducts semen and urine.
The sphincter prevents the semen and urine from eliminating at the same time.
Urethra used for waste removal only.
Higher risk of infection.

19. Male / Female

21. Kidney Stones Calcium and Uric acid crystalize.
Form in Kidney then get clogged in Ureter.
Block urine from passing and filling in Bladder.

22. Respiratory system Oxygen in – Carbon Dioxide out (waste)
The harder you work the more oxygen you need; therefore the faster you breathe.
Why is it best to breathe through your nose?
Serves as a filter to prevent debris entering lungs.
Any debris that get past NOSE hairs trigger the sneeze.
What is a hiccup?
Involuntary contraction of the diaphragm
Sucks air over vocal cords
Cords snap shut, cutting off the air flow and the sound.

23. 4. 5. 6. 7. 1. 8. 2.
Bronchiole
Aorta 3.
10. 9.
11.

24. How do we BREATHE?

25. Pneumonia
Pneumonia - is an inflammation or infection of the lungs most commonly caused by a bacteria or virus. Pneumonia can also be caused by inhaling vomit or other foreign substances.

26. Asthma
A respiratory condition marked by spasms in the bronchi of the lungs, causing difficulty in breathing. It usually results from an allergic reaction or other forms of hypersensitivity.
Normal Airway
Inflamed Airway

28. Lymphatic/Immune System Fights Infection
Moves fluid (lymph) throughout body.
Traps and destroys invaders, such as bacteria, viruses and even cancers.
Plays large part in IMMUNITY!!

29. Thymus Gland Produces White Blood Cells, known as T-cells.
T-cells produced in bone marrow along with other white blood cells.
Fighter cells!!!!

30. Is the spleen important?
Produces disease fighting white blood cells.
Filters blood – destroys old, worn out red blood cells.
Reserve for the blood supply
Squeezes blood into the blood stream if the body needs extra.

31. The Hormonal System Coordinates body function
Nervous system sends electrical signals where as hormonal sends chemical signals throughout body.
Hormones control:
Growth
Pituitary Gland
Growth of bones and other body tissues
Development
Metabolism

32. Growth Hormone Produced by pituitary gland in brain.
Stimulates the growth of bones and other body tissues.
After growth is complete, growth hormone regulates the body’s use of protein, as well as its use and storage of fats and carbohydrates.

33. Hormones
Both male and female produce both “male” and “female” hormones.
Male hormones = Androgens
Female hormones = Estrogen

34. Female Reproductive System

37. Male Reproductive system
What is circumcision?
Foreskin that covers the head of the penis is removed.
Prevents infections and certain forms of cancer
Usually performed 2-3weeks after being born.
Why are testicles outside the body?
Temperature Regulation – Testicles must stay at about 3 degrees Fahrenheit below normal body temperature.
If the testicles were inside the body; sperm production would stop.