1. Homeostasis Test Review

2. Part A: True and False

3. Contractions that increase in strength during pregnancy are an example of a negative feedback mechanism. A. True B. False

4. Contractions that increase in strength during pregnancy are an example of a negative feedback mechanism. A. True B. False – positive feedback

5. Some animals sun themselves or retreat to shade as a way of regulating their body temperature. A. True B. False

6. Some animals sun themselves or retreat to shade as a way of regulating their body temperature. A. True B. False

7. A cross section of the kidney shows an outer layer called the medulla, an inner layer called the cortex, and a hollow chamber called the renal pelvis. A. True B. False

8. A cross section of the kidney shows an outer layer called the medulla, an inner layer called the cortex, and a hollow chamber called the renal pelvis. A. True B. False - outer layer: cortex - inner layer: medulla

9. Plasma proteins, erythrocytes, and platelets are transferred to the Bowman's capsule. A. True B. False

10. Plasma proteins, erythrocytes, and platelets are transferred to the Bowman's capsule. A. True B. False

11. When a person sweats and does not drink water, the pituitary gland releases ADH. A. True B. False

12. When a person sweats and does not drink water, the pituitary gland releases ADH. A. True B. False

13. Information from your brain is moved to your leg muscles by motor neurons. A. True B. False

14. Information from your brain is moved to your leg muscles by motor neurons. A. True B. False

15. Myelin sheath is very important for the transferring of information along the medulla. A. True B. False

16. Myelin sheath is very important for the transferring of information along the medulla. A. True B. False - axon

17. Electrochemical messages are carried by the movement of ions through the nerve membrane. A. True B. False

18. Electrochemical messages are carried by the movement of ions through the nerve membrane. A. True B. False

19. When the nerve cell is excited, it becomes more permeable to potassium ions than sodium ions. A. True B. False

20. When the nerve cell is excited, it becomes more permeable to potassium ions than sodium ions. A. True B. False - sodium

21. If a foreign bacteria enters the skin, the first leukocyte it will meet will be a macrophage. A. True B. False

22. If a foreign bacteria enters the skin, the first leukocyte it will meet will be a macrophage. A. True B. False

23. An antibody that attacks the HIV virus will also attack other viruses. A. True B. False

24. An antibody that attacks the HIV virus will also attack other viruses. A. True B. False

25. Part B: Multiple Choice

26. The term used to describe the ability of a living organism to adjust to changing environmental conditions by regulating their internal processes is a.regulation b.homeostasis c. Inhibition d. feedback e. metabolism

27. The term used to describe the ability of a living organism to adjust to changing environmental conditions by regulating their internal processes is a.regulation b.homeostasis c. Inhibition d. feedback e. metabolism

28. Which of the following analogies would best fit the action of the kidney? a.selecting those items not useful and excreting them b.removing all the items and returning 10% of them c.removing all the items and returning none of them d.removing all the items and returning what is still useful

29. Which of the following analogies would best fit the action of the kidney? a.selecting those items not useful and excreting them b.removing all the items and returning 10% of them c.removing all the items and returning none of them d.removing all the items and returning what is still useful

30. Which one of the following is a part of the circulatory system? a. distal tubules b. collecting duct c. Bowman's capsule d. glomerulus

31. Which one of the following is a part of the circulatory system? a. distal tubules b. collecting duct c. Bowman's capsule d. glomerulus

32. Choose the item below controlled by ADH: a. the level of glucose in the blood b. the amount of water re-absorbed in the nephron c. the development of the lining of the uterus d. the release of an ovum from the ovary e. the uptake of calcium by the bones

33. Choose the item below controlled by ADH: a. the level of glucose in the blood b. the amount of water re-absorbed in the nephron c. the development of the lining of the uterus d. the release of an ovum from the ovary e. the uptake of calcium by the bones

34. Antidiuretic hormone is secreted by the a. Thyroid b. pituitary gland c. adrenal glands d. hypothalamus

35. Antidiuretic hormone is secreted by the a. Thyroid b. pituitary gland c. adrenal glands d. hypothalamus

36. The coordination of motor activities in mammals is carried out by which of the following? a. Pons b. Medulla c. Cerebellum d. Hypothalamus e. cerebrum

37. The coordination of motor activities in mammals is carried out by which of the following? a. Pons b. Medulla c. Cerebellum d. Hypothalamus e. cerebrum

38. Focusing the eye is achieved by changing the shape of the lens. This is called a. Zooming b. Habituation c. Refraction d. Accommodation e. conditioning

39. Focusing the eye is achieved by changing the shape of the lens. This is called a. Zooming b. Habituation c. Refraction d. Accommodation e. conditioning

40. The autonomic division of the nervous system a. is involved in conscious thought b. is involved in learning c. controls unconscious life-sustaining activities d. controls voluntary muscles e. all of the above

41. The autonomic division of the nervous system a. is involved in conscious thought b. is involved in learning c. controls unconscious life-sustaining activities d. controls voluntary muscles e. all of the above

42. A patient with symptoms of tremors, an irregular walk, and halting speech might have experienced trauma to which of the following? a.cerebrumd.thalamus b. ponse.hypothalamus c.cerebellum

43. A patient with symptoms of tremors, an irregular walk, and halting speech might have experienced trauma to which of the following? a.cerebrumd.thalamus b. ponse.hypothalamus c.cerebellum

44. Respiration is controlled by which of the following? a. pons, hypothalamus b. pons, medulla oblongata c. cerebrum, hypothalamus d. hypothalamus, pituitary gland

45. Respiration is controlled by which of the following? a. pons, hypothalamus b. pons, medulla oblongata c. cerebrum, hypothalamus d. hypothalamus, pituitary gland

46. The act of blushing when embarrassed is controlled by which of the following? a. the autonomic nervous system b. pores in the skin c. the cerebrum d. the cerebellum e. the peripheral nervous system

47. The act of blushing when embarrassed is controlled by which of the following? a. the autonomic nervous system b. pores in the skin c. the cerebrum d. the cerebellum e. the peripheral nervous system

48. Parasympathetic stimulation would result in which of the following? a. decreased blood flow in skin b. increased heart rate c. pupil dilation d. increased activity of digestive tract

49. Parasympathetic stimulation would result in which of the following? a. decreased blood flow in skin b. increased heart rate c. pupil dilation d. increased activity of digestive tract

50. Vision difficulties are associated with which lobe of the brain? a. Frontal b. Parietal c. Temporal d. occipital

51. Vision difficulties are associated with which lobe of the brain? a. Frontal b. Parietal c. Temporal d. occipital

52. Which part of the neuron receives sensory information? a. Dendrite b. Axon c. Sheath d. node of Ranvier

53. Which part of the neuron receives sensory information? a. Dendrite b. Axon c. Sheath d. node of Ranvier

54. Which of the following is not an effector? a. Muscles b. glands c. Organs d. brain

55. Which of the following is not an effector? a. Muscles b. glands c. Organs d. brain

56. There is no vaccine available to prevent the common cold because a. common cold viruses do not stimulate production of antibodies b. there are too many types of common cold viruses c. common cold viruses grow best at 33°C instead of 37°C d. the common cold seldom causes absence from work and school

57. There is no vaccine available to prevent the common cold because a. common cold viruses do not stimulate production of antibodies b. there are too many types of common cold viruses c. common cold viruses grow best at 33°C instead of 37°C d. the common cold seldom causes absence from work and school

58. T cells become mature in which of the following? a. bone marrow b. spleen c. thyroid gland d. lymph node e. thymus gland

59. T cells become mature in which of the following? a. bone marrow b. spleen c. thyroid gland d. lymph node e. thymus gland

60. Part C: Short Answer

61. 1.Describe how negative feedback is preferable to positive feedback in most situations.

62. - positive feedback will increase the response - disadvantage if stimulus is harmful - negative feedback reduces the response when balance is achieved

63. What conditions or substances must remain constant in the body?

64. 1. Body temperature 2. pH 3. Water levels 4. Oxygen/carbon dioxide levels 5. Nutrient levels 6. Electrolytes (dissolved ions) 7. Wastes, toxins

65. List the three stages of urine formation.

66. 1. Glomerular filtration 2. Active recovery/reabsorption 3. Water recovery/secretion of wastes

67. Describe the role of insulin and glucagon in regulating blood sugar.

68. Insulin – lowers blood sugar Glucagon – raises blood sugar

69. List three non-specific defences of the body.

70. 1. Skin 2. Body secretions 3. Normal bacteria 4. White blood cells