Question

All the answers please

5S. Which of the following are likely etiologies of avascular or aseptic necrosis: a. Decompression sickness b. Sickle cell disease c. Steroid use d. All of the above e. None of the above 56. Bulging of the intervertebral disc or rupturing of the annular fibrosus can lead to distal paraesthesia: a. True b. False 57. The ilium is part of the hip bone. a. True b. False 58. Open osseous fracture leads to osteomyelitis of the myelin sheath. a. True b. False 59. Colle's fracture involved which of the following. a. b. c. d. e. Fracture of the distal radial metaphysis Mechanism of deformity results from a fall on out-stretched hand There is dorsoradial displacement and angulations All of the above Choice A and C 60. Which of the following are true regarding the lymphatic system. a. b. c. d. e. Take-up excess tissue fluid Genesis of all lymphocytes is the bone marrow Host defense All of the above Choice A&C 61. Deficiency of which of the following leads to impaired hematopoiesis: a. b. c. d. e. Protein Iron Bu and folate All of the above None of the above 62. Megaloblastic anemia is more common than hypochromic microcytic anemia a. True b. False

Answer 1

55) d ) decompression sickness , sickle cell disease and steroid Use may cause the avascular necrosis .

Avascular necrosis : death of the bone tissue due to lack of blood supply .

In decompression sickness ,the tissue may decompress the blood vessel which passing blood to particular area most commonly hip bone ( head of the femur ) etc .

Sickle cell disease : here the sickle shaped RBC block the lumen of blood vessel ,so necrosis may occur .

Steroids also cause the avascular necrosis due to fat hyperyrophy , fat embolism occlude the blood vessel lead to necrosis .

56) b ) false

Bulging of intervertibral disc causes pain when it compress the spinal cord ,it wont cause any symptoms if not compress the spinalcord .and may have numbness and tingling sensation .

Rupture of annular fibrosus also causes pain ,it wont cause parastgesia .

57) a) true ,ilium is the part of hip bone

Hip bone is formed by the ilium ,ischeum and pubis

58) false

Osteomyelitis is a inflammation of bone , myelin sheath is covering of axon .