Textbook QuestionWhich bones form via intramembranous ossification?a. Irregular bonesb. Certain flat bonesc. Long bonesd. Short bonese. More than one of the above302views
Textbook QuestionOf the following statements, identify those that are properties of intramembranous ossification, endochondral ossification, or both.a. The bone is formed via a hyaline cartilage model.b. Bone tissue forms from ossification centers.c. Bone forms from within a mesenchyme membrane.d. The early spongy bone is formed, after which the early compact bone develops.e. The original primary bone is replaced with secondary bone.f. A bone collar forms, followed by the early spongy bone.300views
Textbook QuestionExplain the effect that the following hormones have on growth of bone tissue:a. Growth hormone311views
Textbook QuestionExplain the effect that the following hormones have on growth of bone tissue:b. Testosterone273views
Textbook QuestionExplain the effect that the following hormones have on growth of bone tissue:c. Estrogen266views
Textbook QuestionFill in the blanks. Bone deposition is carried out by_____, which secrete the____ of the ECM by exocytosis. They facilitate the formation of the______of the ECM by secreting_____filled with calcium ions, enzymes, and ATP. Bone resorption is carried out by______ , which secrete_____and_____from their ruffled border.293views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.b. Bone deposition is triggered by tension placed on the bone.248views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.c. The greater the load the bone must carry, the more bone that is resorbed by osteoclasts.273views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.d. Calcitonin is released in response to an elevated calcium ion concentration in the blood.293views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.e. Parathyroid hormone increases the blood calcium ion concentration by increasing the activity of osteoblasts.300views
Textbook QuestionMark the following statements as true or false. If a statement is false, correct it to make a true statement.f. Vitamin D is required for calcium ion absorption from the intestines and retention in the kidneys.299views
Textbook QuestionWhich of the following influences bone remodeling?a. Vitamins such as vitamins D, C, and Kb. Intake of calcium ionsc. Hormones such as estrogen and testosteroned. All of the above263views
Textbook QuestionCorrectly order the following steps of fracture repair, placing a 1 by the first step, a 2 by the second step, and so on. ____Osteoblasts in the periosteum lay down a bone callus of primary bone. ____Damaged blood vessels bleed and fill the gap between the bone fragments with a hematoma. ____The bone callus is remodeled and replaced with secondary bone. ____Fibroblasts, chondroblasts, and blood vessels enter the clot, and the soft callus begins to bridge the gap between bone fragments.430views
Textbook QuestionExplain why a person who is wheelchair-bound or bed-bound often has very low bone mass, especially in his or her legs.265views
Textbook QuestionHow could diseases of the kidney, skin, and/or intestines cause diseases of the bone?294views
Textbook QuestionHow could a disease that affects primarily cartilage impact bone growth and bone formation?386views
Textbook QuestionExplain why young men who take anabolic steroids (which mimic the actions of testosterone) often display stunted growth and have an overall shorter stature.307views
Textbook QuestionLucy Dupre is a 2-year-old girl living in northern Canada. You notice that her growth seems abnormally slow and she has exhibited signs of weakened bones, including fractures. Her parents admit they have not supplemented her diet with vitamin D, as they feel that any supplementation is 'unnatural' and 'not organic.' Explain why Lucy is having problems with her bones and bone growth.251views
Textbook QuestionFouz Akkad is a 6-year-old girl who has been diagnosed with a rare genetic defect in which her lysosomes are unable to maintain an acidic pH. What are lysosomes? Why do lysosomes require an acidic pH? How will this affect the ability of certain bone cells to function? What consequences will this disease have on Fouz's bones? 261views
Textbook QuestionMark the following statements about bone tissue as true or false. If a statement is false, correct it to make a true statement.f. Osteocytes are mature and less active osteoblasts that have become surrounded by bone ECM.307views
Textbook QuestionWhy does a second fracture in the same bone tend to occur at a site different from that of the first fracture?165views
Multiple ChoiceWhich of the following characteristics of skeletal cartilage limits its thickness?2248views