Ch 6 Bones

Bones do NOT have a role in Bones do NOT have a role in ________. blood cell formation movement fat storage support glycogen production

Which of the following cells are NOT matched with its appropriate function? osteoclasts; bone reabsorption bone lining cells; maintain matrix osteocytes; produce new bone cells. osteoblasts create new bone matrix

The notable hardness of bone is attributed to ________. the presence of glycoproteins the presence of cartilage the presence of inorganic hydroxyapatites the presence of collagen fibers the presence of proteoglycans

Bones are covered and lined by a protective tissue called periosteum. The inner (osteogenic) layer consists primarily of osteoblasts and osteoclasts cartilage and compact bone marrow and osteons chondrocytes and osteocytes

In adults, yellow marrow is located ________. in the medullary cavity of long bones primarily in flat bones in the central canals of osteons in the epiphyseal plates of long bones

The osteon is ________. the structural unit of spongy bone the structural unit of compact bone a fibrous membrane that covers and protects bone a network of red marrow

During infancy and childhood, the most important stimulus of epiphyseal plate activity is ________. the thyroid hormones testosterone estrogen growth hormone

Which of the following is UNLIKELY to affect bone remodeling? glucagon parathyroid hormone low blood Ca2+ concentration mechanical stress

Which hormone increases osteoclast activity to release more calcium ions into the bloodstream? parathyroid hormone estrogen thyroxine calcitonin

Which of the following glands or organs produces hormones that tend to decrease blood calcium levels? pineal gland spleen parathyroid thyroid

Which of the following is CORRECTLY matched? A. compound fracture: the fractured bone ends penetrate the skin B. linear fracture: the break is perpendicular to the bone's long axis C. nondisplaced fracture: the fractured bone ends are misaligned D. incomplete fracture: the bone is broken through

The correct order (from start to finish) of fracture repair is ________. A. hematoma formation, bony callus formation, bone remodeling, and fibrocartilaginous callus formation B. bony callus formation, hematoma formation, fibrocartilaginous callus formation, and bone remodeling C. bone remodeling, hematoma formation, fibrocartilaginous callus formation, and bony callus formation D. hematoma formation, fibrocartilaginous callus formation, bony callus formation, and bone remodeling

Choose the FALSE statement. A. The female pelvis is tilted further forward than the male pelvis. B. The pubic arch is broader in the pelvis of a female than in the pelvis of a male. C. The female pelvis is thinner than that of a male. D. The pelvic outlet is narrower in a female than in a male.