* not completed

. Which of the following statements regarding growth of the skeleton is correct?

The adolescent growth spurt occurs, on average, earlier in boys than in girls. correct incorrect

Long bones increase in length by interstitial growth as new cartilage is deposited at the epiphyseal plate. correct incorrect

Bone mass starts to fall after puberty correct incorrect

The adolescent growth spurt is seen in pituitary dwarfism. correct incorrect

* not completed

. Which of the following statements regarding the skeleton are correct? Please select all that apply

The shaft of a long bone is called the diaphysis. correct incorrect

The organic matrix of bone is secreted by chondroblasts. correct incorrect

Dividing cartilage cells are situated in the marrow cavity of long bones correct incorrect

Bone remodelling is a function of the activity of osteoblasts and osteoclasts correct incorrect

The long bones develop from fibrous connective tissue. correct incorrect

Most bones are formed by endochondral ossification of a hyaline cartilage model. correct incorrect

The principal inorganic components of bone are calcium and phosphates correct incorrect

* not completed

. Which of the following statements regarding the control of bone growth are correct? Please select all that apply

Bone growth during fetal life is controlled primarily by thyroid hormone correct incorrect

Growth hormone secretion is stimulated by IGF-I. correct incorrect

An excess of vitamin D causes rickets correct incorrect

Parathyroid hormone is required for normal osteoblastic activity. correct incorrect

The sex steroids are chiefly responsible for closure of the epiphyses. correct incorrect

* not completed

. Which of the following statements regarding the control of cellular growth are correct? Please select all that apply

Liver cells respond to loss of liver tissue by increasing their rate of division. correct incorrect

Nerve is a regenerative tissue correct incorrect

Oncogenes protect normal cells from transformation into cancer cells. correct incorrect

Cells from a malignant neoplasm are less well differentiated than normal cells. correct incorrect

Interphase of the cell cycle lasts longer than the mitotic phase correct incorrect

* not completed

. A 40 year old man has noticed that his voice has become hoarse over the past year. He has also noticed that his shoe size has increased over the last few years. He has large hands and his features have become noticeably more coarse with a more prominent jaw. Which of the following statements are likely to be true? Please select all that apply.

He has acromegaly correct incorrect

His is likely to have developed diabetes correct incorrect

His peripheral vision is poor. correct incorrect

He has osteomalacia correct incorrect