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Exam 6: Bones and Skeletal Tissue

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Question 21

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Figure 6.2 Using Figure 6.2, match the following: -Location of the epiphyseal line.

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Question 22

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Bones are covered and lined by a protective tissue called periosteum. The inner (osteogenic) layer consists primarily of ________.

A) cartilage and compact bone
B) marrow and osteons
C) osteoblasts and osteoclasts
D) chondrocytes and osteocytes

E) B) and D)
F) B) and C)

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Question 23

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What is the structural unit of compact bone?

An osteon contains osteocytes, lamellae, and a central canal, and is found in compact bone only.

Figure 6.2 Using Figure 6.2, match the following: -Area where yellow marrow is found.

Match the following: A) Canaliculi B) Osteoblasts C) Osteoclasts D) Lamellae E) Endosteum -The lining of the marrow cavity.

The canal that runs through the core of each osteon (the Haversian canal) is the site of ________.

Which of the following is the single most important stimulus for epiphyseal plate activity during infancy and childhood?

In some cases the epiphyseal plate of the long bones of children closes too early. What might be the cause?

Cartilage has a flexible matrix that can accommodate mitosis of chondrocytes.

Ossification of the ends of long bones ________.

Figure 6.1 Using Figure 6.1, match the following bone types with the numbered structure: -Bone 5.

Emily, a 64-year-old formerly obese woman who successfully lost over 100 pounds, was brought to the hospital suffering pain in her legs, and an X-ray revealed that she had a simple fracture in her right femur and a crack in her left tibia. Other tests revealed that her bones were brittle and porous. What might have happened to Emily, and what advice would she have been given by the physician?

Match the following: A) Appositional growth B) Epiphyseal plate C) Epiphyseal line D) Diaphysis E) Chondrocytes -The growth pattern of bone in which matrix is laid down on the surface.

What kind of tissue is the forerunner of long bones in the embryo?

Match the following: A) Appositional growth B) Epiphyseal plate C) Epiphyseal line D) Diaphysis E) Chondrocytes -Area where bone longitudinal growth takes place.

Several hormones control the remodeling of bones. Which two respond to changing blood calcium levels?

Match the following: A) Appositional growth B) Epiphyseal plate C) Epiphyseal line D) Diaphysis E) Chondrocytes -The area of long bones where cartilage cells are replaced by bone cells.

A central (Haversian) canal may contain arteries, veins, capillaries, lymph vessels, and ________ fibers.

Match the following: A) Osteoporosis B) Paget's disease C) Osteomalacia -Bone formed is poorly mineralized and soft. Deforms on weight bearing.