34. Which two hormones remodeling? a. thyroid hormone and estrogen b. parathyroi

Question

34. Which two hormones remodeling? a. thyroid hormone and estrogen b. parathyroid hormone and calcitonin c. parathyroid hormone and leptin d. vitamin D and calcitonin work in opposition to control homeostatic blood calcium levels via bone 35. Which of the following is not a function of the skeletal system? a. communication b. blood cell production c. support and protection d. storage of minerals and fat 36. Which of the following is incorrecr? a. In intramembranous ossification, mesenchymal stem cellis develop into osteoblasts model. b. In endochondral ossification, the primary ossification center forms around hyaline cartilage c. All flat bones are formed via intramembranous ossification. d. Bone remodeling occurs until early adulthood. 37. Wolffs law is concerned with a. vertical growth of bones being dependent on age b. the diameter of the bone being dependent on the ratio of osteoblasts to osteoclasts c. the thickness and shape of a bone being dependent on stresses placed upon it d. the function of bone being dependent on shape 38. Which of the following are caused by vitamin D deficiency? a. rickets and osteomalacia b. rickets and osteopetrosis c. osteopetrosis and osteomalacia d. Paget's disease and osteoporosis 39. Which of the following is incorrect regarding osteoporosis? a. Risk factors include lack of estrogen, vitamin D and calcium. b. Weight-bearing exercise helps to prevent osteoporosis. c. Osteoporotic bone has very high ratio of spongy to compact bone. d. Bone resorption outpaces bone deposit, resulting in porous and fragile bones. 40. Pivot joints are a synarthrotic b. amphiarthrotic c. diarthrotic d. nonaxial 41. Suture joints in the skull are a. synarthrotic b. amphiarthrotic c. diarthrotic d. cartilaginous 42. When someone has slipped a disc of the vertebral column, which type of joint is disrupted? a. fibrous joint b. cartilaginous joint c. synovial joint d. The connections between the vertebrae are not examples of joints

Explanation / Answer

34. B. Parathyroid hormone and calcitonin - calcitonin decreases serum calcium and PTH increase serum calcium.

35. A. Communication -

36. D. Bone remodeling - bone remodling occurs at every age of life.

37. C. Thickness and shape of bone is depends upon stress placed upon it.

38. A. Rickets and osteomalasia - rickets is disease of childhood and osteomalasia is seen in adult. Both are due to Vitamin D deficiency.

39. C. Osteoprotic bone has high ratio of spongy to compact bone.

40. C. Diarthrotic

41. A. Synarthrotic

42. C. Cartilaginous joint - as these are joint between vertebra.

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