Chamberlain College of Nursing - ANATOMY BIO 251 Week 4 Quiz 4/ANATOMY BIO 251 Week 4 Quiz 4_Verified Answers.

1. Which region of a long bone articulates with other bones? (Points : 3) Diaphysis Epiphysis Metaphysis Periosteum Marrow Question 2.2. What is the region of long bone found between the diaphysis and the epiphysis called? (Points : 3) Epiphyseal plate Epiphyseal line Metaphysis Diaphyseal line Diaphyseal plate Question 3.3. What is the fibrous covering on the surface of bone that is involved in thickening of the bone called? (Points : 3) Periosteum Endosteum Marrow Epiphysis Metaphysis Question 4.4. What are the extracellular fluid-filled extensions of the lacunae called? (Points : 3) Perforating (Volkmann’s canals) Central (Haversian canals) Osteons This study source was downloaded by from CourseH on :48:52 GMT -05:00 Canaliculi Periosteum Question 5.5. How are osteons in compact bone tissue aligned? (Points : 3) Horizontal to the metaphysis Parallel to the epiphysis Parallel to the length of the diaphysis Randomly between the epiphyseal plates Parallel to the perforating canals Question 6.6. Which of the following correctly lists the order of the four zones of cartilage found within the growth plate starting at the epiphysis and extending to the diaphysis? (Points : 3) Calcified cartilage, resting cartilage, proliferating cartilage, hypertrophic cartilage Resting cartilage, proliferating cartilage, calcified cartilage, hypertrophic cartilage Proliferating cartilage, resting cartilage, hypertrophic cartilage, calcified cartilage Resting cartilage, proliferating cartilage, hypertrophic cartilage, calcified cartilage Hypertrophic cartilage, calcified cartilage, proliferating cartilage, resting cartilage Question 7.7. Bone mass reduction is promoted by which hormone? (Points : 3) Calcitriol Calcitonin Human growth hormone Parathyroid hormone Insulin Question 8.8. Which of the following hormones is the most important for Ca2+ regulation? (Points : 3) This study source was downloaded by from CourseH on :48:52 GMT -05:00 Parathyroid hormone Calcitriol Thyroid hormone Calcitonin Aldosterone Question 9.9. (TCO 4) Which of the following selections correctly lists the sequence of events that occur during intramembranous ossification? (Points : 3) Ossification center develops calcification formation of trabeculae development of new periosteum Calcification ossification center develops formation of trabeculae development of new periosteum Ossification center develops formation of trabeculae calcification development of new periosteum Development of new periosteum ossification center develops calcification formation of trabeculae Ossification center develops calcification development of new periosteum formation of trabeculae Question 10.10. (TCO 4) Which of the following hormones are more important post-puberty for bone growth? (Points : 3) Insulin-like growth factors Thyroid hormones Human growth hormones Insulin Sex hormones Question 11.11. Describe the steps in bone repair. (Points : 5) After a break the blood vessels are broken open. They then spread and clot over the break to stop bleeding. White blood cells are then called over to clean up any bacteria or damaged cells. Osteoclasts then come in to remove dead bone matrix. After such then the fibroblasts come to form cartilage to This study source was downloaded by from CourseH on :48:52 GMT -05:00 prevent further damage and helps to not move it. Then osteoblast move into replace the cartilage with bone matrix and form into spongy bone. After such events the bone matrix will then remodel itself into compact bone. Question 12.12. Patient X has a tumor of the parathyroid glands that causes a hypersecretion of PTH from these glands. Predict the effect this hypersecretion would have on the skeletal system and on the secretion of calcitonin from the thyroid gland. (Points : 5) Since patient X has a high level of osteoclast activity it will cause the calcium to be removed from the bones. Which will weaken and soften the bones for a easy break to occur. The extra phosphate will be lost in the kidneys and the large levels of calcium ions in the blood may effect the nerve and muscle function. The calcitonin level will be so high that the body will try to restore to homeostasis by increasing deposition of calcium.