42. How many flat bones are present in a cranium ?
43. Who makes the floor of the buccal cavity ?
44. How many bone are present in each middle ear of human ?
45. How many vertebrae are present in the structure of vertebral column of human ?
46. Where cervical vertebrae are found ?
47. What is the formula of human vertebrae ?
48. Which flat bone is present in the middle line of thorax region of human ?
49. How many pairs of ribs are found in human ?
50. How many true pairs of ribs are found in human ?