Resources

1. Resources To return to the lesson, click the Back button or press Esc.

2. Image Bank The Skeletal System To return to the lesson, click the Back button or press Esc.

3. Image Bank The Skeletal System To return to the lesson, click the Back button or press Esc.

4. Image Bank Types of Bones To return to the lesson, click the Back button or press Esc.

5. Image Bank Long Bones To return to the lesson, click the Back button or press Esc.

6. Image Bank Short Bones To return to the lesson, click the Back button or press Esc.

7. Image Bank Flat Bones To return to the lesson, click the Back button or press Esc.

8. Image Bank Classification of Flexible Joints To return to the lesson, click the Back button or press Esc.

9. Image Bank Care and Problems of the Skeletal System To return to the lesson, click the Back button or press Esc.

10. Image Bank Care and Problems of the Skeletal System To return to the lesson, click the Back button or press Esc.

11. Image Bank Classification of Fractures To return to the lesson, click the Back button or press Esc.

12. Image Bank Osteoporosis To return to the lesson, click the Back button or press Esc.

13. Image Bank The Muscular System To return to the lesson, click the Back button or press Esc.

14. Image Bank Muscle Contraction and Bone Movement Click image to view movie. To return to the lesson, click the Back button or press Esc.

15. Image Bank The Nervous System To return to the lesson, click the Back button or press Esc.

16. Image Bank The Nervous System To return to the lesson, click the Back button or press Esc.

17. Image Bank The Nerve Impulse Click image to view animation. To return to the lesson, click the Back button or press Esc.

18. Image Bank Structure and Parts of the Spinal Cord To return to the lesson, click the Back button or press Esc.

19. Image Bank Structure and Parts of the Brain To return to the lesson, click the Back button or press Esc.

20. Image Bank Steps of a Reflex Action Click image to view animation. To return to the lesson, click the Back button or press Esc.

21. Image Bank Care and Problems of the Nervous System To return to the lesson, click the Back button or press Esc.

22. Image Bank Cerebral Palsy To return to the lesson, click the Back button or press Esc.

23. TAKS Test Practice Read the passage below and then answer the questions. We spend a third of our lives sleeping, but no one really knows why. During sleep, muscles relax and heartbeat and breathing rates slow. Brain waves become larger and slower during certain periods of sleep. Later, brain waves become faster and more frequent. This is when we have dreams we can remember. Click Next to continue.

24. TAKS Test Practice Read the passage below and then answer the questions. Sleep is essential for our health. Without sleep, we lose energy. After two days without sleep, concentration becomes difficult and we make mistakes. We experience difficulty thinking, seeing, or hearing. By the fourth day, hallucinations begin, and we see things that do not really exist. Human beings have been known to go without sleep for as long as 10 or 11 days, but they suffer terrible bouts of near insanity, which go away with a return to sleeping. Click Next to view the questions.

25. TAKS Test Practice 1. The author develops the passage by: A.explaining what happens when people sleep. B. comparing the effects of sleep and lack of sleep. C.describing sleep and explaining hallucinations. D.describing sleep and explaining why it is essential. To return to the lesson, click the Back button or press Esc.

26. TAKS Test Practice 2. Which phrase from the second paragraph helps the reader understand the meaning of the word hallucinations? A.terrible bouts of near insanity B. difficulty thinking, seeing, or hearing C.see things that do not really exist D.short-tempered To return to the lesson, click the Back button or press Esc.

27. TAKS Test Practice 3. Write a paragraph describing how you feel when you don’t get enough sleep. To return to the lesson, click the Back button or press Esc.

28. Foldables Before you read Use this Foldable to help you organize your notes on the structure and function of the skeletal system, muscular system, and nervous system. Begin with three sheets of 8½” x 11” paper. Fold the sheets of paper along the long axis so that one edge is about 1” from the other. To return to the lesson, click the Back button or press Esc.

29. Foldables Fold the paper in half. Unfold and cut along the inside fold line. To return to the lesson, click the Back button or press Esc.

30. Foldables Repeat with the other two sheets of paper. Label as shown. Staple the sheets together. To return to the lesson, click the Back button or press Esc.

31. Transparencies Types of Bones To return to the lesson, click the Back button or press Esc.

32. Transparencies Long Bones To return to the lesson, click the Back button or press Esc.

33. Transparencies Short Bones To return to the lesson, click the Back button or press Esc.

34. Transparencies Flat Bones To return to the lesson, click the Back button or press Esc.

35. Transparencies The Skeletal System Your bones continue to grow both in length and in thicknessuntil you are about 25 years old. At this stage bones usuallystop growing,but may continueto thicken. To return to the lesson, click the Back button or press Esc.

36. Transparencies Classification of Flexible Joints To return to the lesson, click the Back button or press Esc.

37. Transparencies Muscle Movement To return to the lesson, click the Back button or press Esc.

38. Transparencies The Skeletal Muscles Major muscle groups include the arms, legs, back, abdomen, Shoulders, and chest. To return to the lesson, click the Back button or press Esc.

39. Transparencies The Nerve Impulse A nerve impulse begins when a sensory receptor is stimulated. The impulse travels to the CNS and is interpreted with the help of an interneuron. Then a motor neuron carries the message to a muscle cell or gland in response to the stimulus. To return to the lesson, click the Back button or press Esc.

40. Transparencies The Nervous System Nerves extend to various parts of the body along the length of the spinal cord. To return to the lesson, click the Back button or press Esc.

41. Transparencies The Brain To return to the lesson, click the Back button or press Esc.

42. Transparencies Steps of a Reflex Action Reflexes can prevent injuries. For example, when you touch something hot, your hand jerks away before you feel your finger being burned. To return to the lesson, click the Back button or press Esc.