Chapier Seven Skcictal System Overvlew: Bone Anatoeny 121 Exercise 7.6 Cow Bone

Question

Chapier Seven Skcictal System Overvlew: Bone Anatoeny 121 Exercise 7.6 Cow Bone Dissection 7 Which of the folowing is the ouber covering of bone that serves as an atachment point for tendions and igaments? (Circle one) b medulary cevity i d trabeculae compactispongy) bone tissue O 8. The thick layer of bone surrounding the medulary cavity is composed or Exercise The Maman Skeleton 9. which of the folowing berenINee or the aial skeleton,Cheek aa that aowo scepuls d.s publs 10. Which of the following bones compose the os coxae? (Check all that apply) O d, pubis sacrum mun False) t. The pectoral girdile consists of the scapula and dlavicle, and the pevic girdie consists of the os conae Can You Apply What You've Learned? 12. A biomedical researcher is interested in designing a drug to Increase bone density. The researcher decided to take one of two approaches designdug ht stimulates bone to be buit faster, or RI design a drug that prevents e hom breaking down To begin this process, the researcher must study the specific cells thet would lkely respond to elther drug 1 or drug 2. What cels are these? build bone break down bone) what process must stop in order for the epiphyseal plate to close? mat is, which layer ofthe plate must stop t, devel men Inn Can You Synthesize What You've Learned? 14. Compare and contrast the histologic structure of compact and spongy bone. 15. Describe the process of endochondral bone development (ossification).

Explanation / Answer

7. The surface of the bone is surrounded by periosteum. It is made of outer fibrous layer composed of dense irregular connective tissue and an inner osteogenic layer consisting of cells. Periosteum function is to protect bone and help in repair of bone tissue and serves as point of attachement of bone with tendons and ligaments. Option c is correct.

8. A bone is composed of an outer shell of dense white osseous tissue called compact or dense bone. The shell encloses a space known as marrow cavity or medullary cavity containing bone marrow.

9. Skeleton is divided into axial skeleton and appendicular skeleton. The axial skeleton bones include cranial bones, sternum and ribs and veteral bones. Appendicular skeleton includes bones of upper and lower extremities and pubic bones. The options b, d and e are correct.

10. Os coxa is also known as innominate bone, pelvic bone or coxal bone. It is a large and flat bone composed of ilium, ischium, and the pubis. These bones join at the pubic symphysis. Options b,c and d are correct.

11. Pectoral and pelvic girdles belong to appendicular skeleton. The pectoral girdle includes the bones of shoulder called clavicle and scapula and enable movement of hands. The pelvic girdle is also called os coxa and composed of ilium, ischium, and the pubis. Therefore, the given statement is true.

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