1. 3 Musculo- skeletal System Digestive System Circulatory System Nervous System Respiratory System 11111 2222 2 3333 4444 55555 4

2. 1-100  The number of bones in the human body. 206

3. 1-200  Skeletal muscle is attached to bones by these. Tendons

4. 1-300  The three types of connective tissue in the musculoskeletal system. Bones, ligaments, cartilege.

5. 1-400  How muscles make bones move. Muscles contract due to signal from nervous system & exert a force; always work in opposing pairs/groups.

6.  1-500  Explain what osteoporosis is and three ways to lessen the risks. Loss of bone tissue, makes bones brittle & weak; increase calcium, vitamin D, and weight- bearing exercises.

7. 2-100  The main function of the digestive system. Takes food in, digests it, excretes waste.

8. 2-200  Where digestion begins. The mouth.

9. 2-300  Its function is to move food to the stomach. The esophagus

10. 2-400  Name and briefly describe one disease of the digestive system. Diabetes: pancreas stops producing enough insulin Colitis: epithelial tissue in colon inflamed.

11. 2-500  Name four substances that are added to food in the digestive tract to aid in digestion. Saliva, enzymes, acids, bile, mucous.

12. 3-100  The major organ of the circulatory system. The heart.

13. 3-200  The main function of the circulatory system. To transport substances around the body.

14. 3-300  The four types of blood cells. Red, white, platelets, and plasma.

15. 3-400  What makes cardiac muscle tissue different from other muscle tissue. It all contracts at the same time, so the heart beats with a regular beat.

16. 3-500  The two other functions of the circulatory system. To regulate body temperature; to fight disease.

17. 4-100  Two main parts of the central nervous system. Brain and spinal cord.

18. 4-200  Main function of the nervous system. Transmit signals to and from brain and rest of body.

19. 4-300  How neurons function. Conducting electrical signals or nerve impulses

20. 4-400  They receive input from the external environment. Sensory receptors

21. 4-500  One function of the cerebrospinal fluid. Cushion brain & spinal cord from injury; transport chemicals; remove wastes from brain.

22. 5-100  The main function of the respiratory system. Gas exchange.

23. 5-200  Another name for the air sacs in the lungs. Alveoli.

24. 5-300  _______ enters bloodstream in the ______ through ________; ______ leaves the bloodstream. Oxygen; lungs; diffusion; carbon dioxide.

25. 5-400 Inhalation: muscles contract, diaphragm flattens, volume of air increases Exhalation: muscles relax, diaphragm dome-shaped, volume of air decreases.  How breathing works.

26. 5-500  Two things done by an increase in breathing. Decreases concentration of carbon dioxide in blood; increases available oxygen.

27. SINGLE BIOPARDY Last slide.