Name UNIT Section 7A Date REVIEW Part 1 - Bone Histology Answer the following qu

ID: 152256 • Letter: N

Question

Name UNIT Section 7A Date REVIEW Part 1 - Bone Histology Answer the following questions: 1. Name and define the basic structural unit that makes up compact bones 2. Describe how spongy bone differs from compact boner 3. Name the living cells in cartilage Part 2-Bone Markings Match each term with its correct definition; you may need to refer to Table 7.1 and your course textbook to complete this ; in bone: portion of the exercise. 1. 2. large projection found only on the femur 3. any extension of a bone shallow depression in a bone a. condyle b. crest c epicondyle branch of a bone cavity within a bone d. facet e. foramen 5. 6. large, knob-like convex process 7. 8. 9. sharp, slender process of a bone 10. process above a condyle f. fossa constricted portion of some bones (e-g, humerus, femur) fovea h. head i. line j neck flattened, smooth articular surface of a bone 11. rounded articular surface at the end of a bone small rounded process or projection on a bone k. process 1. ramus m. sinus n. spine o. trochanter p. tubercle 12. in bone for nerves or blood vessel to pass through 13. 14. small pit or depression 15. low ridge on a bone 16. prominent ridge on a bone (eg, sacrum, coxal) Skeletal System: Bone Tissue and Bones UNIT 7A I 197

Explanation / Answer

Part 1

1. Osteons are structural units of compact bone. Each osteon consists of a central canal, which is composed of nerve filaments and one or two blood vessels, surrounded by lamellae.

2. Compact bones are made of osteons whilespongy bones are made of trabeculae. Spongy (cancellous) bone is lighter and less dense than compact bone. Spongy bone consists of plates (trabeculae) and bars of bone adjacent to small, irregular cavities that contain red bone marrow.

3. The name of living cells in cartiledge is called as chondrocytes. The name of living cells in bone is called as osteocytes.

Part 2

Shallow depression in a bone

Fossa

Large projection found only on the femur

Trochanter

Any extension of a bone

Ramus

Branch of a bone

Neck

Cavity within a bone

Sinus

Large, knob-like convex process

Condyle

Costricted protein of some bones (e.g. humerus, femur)

Process

Flattened, smooth articular surface of a bone

Facet

Sharp, slender process of a bone

Spine

Process above a condyle

Epicondyle

Rounded articular surface at the end of a bone

Head

Small rounded process or projection on a bone

Tubercle

Opening in bone for nerves or blood vessel to pass through

Foramen

Small pit or depression

Fovea

Low ridge on a bone

Line

Prominent ridge on a bone (e.g. sarcum, coxal)

Crest