Week 5 Lab

BIOS251 Week 4 Lab Anatomy of the Skeletal System Exercise – Answer Key 1. What area of the long bone is covered with cartilage? (3 points) 2. What type of cartilage is articular cartilage? (3 points) 3. What area the epiphysis or diaphysis is made up of a thin layer of compact bone and a very thick layer of spongy bone? (3 points) 4. What area the epiphysis or diaphysis is made up of a thick layer of compact bone and a very thin layer of spongy bone.(3 points) 5. Identify the term that describes the phrase about long bones. (6 points)

a. _________bone cell found in lacunae b. _________vertical canal in an osteon c. _________cavity that contains yellow marrow in adult d. _________bone shaft e. _________spaces where the osteocytes are located f. _________horizontal canal in an osteon g. _________small canal connecting lacunae h. _________membrane lining medullary cavity i. _________membrane covering surface of bone j. _________thin bony columns in spongy bone

6. Fill in the blank with the correct term. (6 points) k. The hardness of bone is due to _________________________ l. The flexibility and tensile strength of bone are due to ____________________ m. What type of macromolecule is collagen? _________________________ n. Two bone cells located in the periosteum and endosteum are ______________ o. Which type of bone tissue significantly degenerates first in osteoporosis? ____________________________ p. Identify the osseous tissue cell that secretes collagen. ____________

7. Identify where the statements below describe compact or spongy bone or both.(6 points) q. Composed of osteons r. Contains osteocytes and lacunae s. Has lamellae t. Has trabeculae u. Has perforating canals v. Located in the epiphyses w. Located in the diaphysis x. Has a central canal