資訊推薦

• 20. The function of the sphincter between the stomach and small intestine is to(A) retain chyme in t
• 21. Which hormone is produced by adipose cells and helps to control appetite?(A) insulin (B) bile (C
• 22. Which statement regarding breathing and circulation in insects is false?(A) Insects lose very li
• 23. What part of the human brain contains control centers that establish a breathing rhythm?(A) midb
• 24. Which statement about mammalian circulatory systems is false?(A) The pulmonary circuit carries b
• 25. In mammals, blood returning from the head will pass through the ________ just before entering th
• 26. During ventricular systole, the semilunar valves ________ and the AV valves ________.(A) open； o
• 27. Which of the following cells are phagocytes?(A) monocytes and neutrophils(B) basophils and eosin
• 28. Which is the correct order of steps taken by B and T cells to defend against infection in body f
• 29. Clonal selection(A) determines the pool of mature leukocytes that will be stimulated by macropha
• 30. Complement proteins can do all of these functions except(A) enhance phagocytosis by innate immun
• 31. What is passive immunity dependent upon?(A) a person's own immune system producing antibodi
• 32. What is the advantage of excreting nitrogenous waste in the form of ammonia?(A) Ammonia is less
• 33. Which option correctly lists the structures in the kidney in the order in which fluid flows thro
• 34. Where along the nephron is glucose reabsorbed from the filtrate back into the blood?(A) distal t
• 35. What is the function of antidiuretic hormone?(A) to increase urination(B) to increase water reab
• 36. Which endocrine gland synthesizes melatonin?(A) pineal (B) adrenal cortex (C) thyroid (D) parath
• 37. Which statement about glands and hormones is true?(A) The anterior pituitary produces multiple h
• 38. Which hormone stimulates growth of an ovarian follicle?(A) LH (B) FSH (C) estrogen (D) progester
• 39. One neurotransmitter associated with sleep, mood, attention, and learning is(A) acetylcholine. (
• 40. Which results from stimulation by the parasympathetic nervous system?(A) increased heart rate(B)
• 41. Which list correctly orders the structures within the ear as they transfer a sound wave during h
• 42. Which of the following characteristics is referred to HIV, but not other viruses.(A) 2 copies of
• 43. Which part of a bone contains red bone marrow?(A) compact bone(B) fibrous connective tissue(C) s
• 44. Which statement best describes the power stroke of muscle contraction?(A) The myosin head bends,