1. Digestive, Circulatory, and Lymphatic Systems

2. circulatory system
the transport system that uses blood to carry nutrients, oxygen, etc. to the cells of the body and carries wastes away from the cells

3. heart
a muscular organ that pumps blood throughout the body

4. atria/atrium
the upper chambers of each side of the heart

5. ventricles
the lower chambers of each side of the heart

6. valve
structures found in the heart that keep the blood flowing forward

7. arteries
blood vessels that carry blood away from the heart (with oxygen)
(shown in red)

8. veins blood vessels that carry blood toward the heart (without oxygen)
(shown in blue)

9. capillaries tiny blood vessels that connect the arteries and veins
they exchange gases and nutrients between the blood and body cells
the smallest blood vessels

10. plasma
a yellowish fluid that is mostly water in which blood cells are suspended; it also contains dissolved nutrients, minerals, salts, and gases

11. red blood cells
blood cells that carry oxygen to the cells of the body and carry carbon dioxide from cells back to the lungs

12. hemoglobin
a molecule that carries oxygen and carbon dioxide

14. white blood cells
the type of blood cells that help the body fight disease by attacking invading microorganisms and making antibodies to fight infection

15. lymphocyte

16. platelets
cell fragments that help form blood clots to stop bleeding

18. Digestive System Name the organ system that:
breaks down food into simpler molecules that can be used by the body

19. Digestive System Which system includes the following organs? mouth
esophagus
stomach
small intestine
large intestine
rectum
liver
gall bladder
pancreas

20. mechanical digestion
the process where food is physically broken down into smaller pieces

21. chemical digestion
the process where liquids break down food molecules into simpler substances using enzymes and acids

22. enzyme
a protein that speeds up a chemical reaction

23. esophagus
a muscular tube that connects the mouth to the stomach

24. stomach
a muscular bag-like organ that carries out both mechanical and chemical digestion using hydrochloric acid

25. chyme
food from the stomach that has been changed into a thin, watery liquid that moves through the small intestine

26. small intestine
a long, muscular tube where the body absorbs nutrients from food

27. villi
finger-like projections in the small intestine; help many nutrients to be absorbed

28. pancreas
a gland that releases digestive enzymes and other chemicals into the small intestine

29. liver
an organ that makes bile, a liquid that helps to break down fat (bile is stored in the gall bladder)

31. large intestine
an organ of the digestive and excretory systems that absorbs water from undigested material and helps remove solid wastes from the body

32. What are the 3 types of muscle tissue?
Skeletal muscles
Smooth muscles
Cardiac muscles