Question

1.         Intramembranous ossification is formed from _______________ and Endochondral originates from existing ________________.

A.         Cartilage; Mesenchyme

B.         Cartilage; Primary ossification centers

C.         Mesenchyme; Primary ossification centers

D.         Mesenchyme; Cartilage

E.         None of the above

2.         What can epiphyseal plate fusing be used to determine?

A.         Bone health

B.         Steroid Use

C.         Age at death

3.         Woven bone lacks

A.         Osteocytes

B.         Trabeculae

C.         Compact Bone

D.         Red Bone Marrow

4.         Primary ossification results in all of the following except

A.         Growth in the epiphysis

B.         Formation of the medullary cavity

C.         Lengthwise bone growth

5.         Woven bone is different from lamellar bone in all of the following ways except

A.         Woven bone does not contain osteons; Lamellar bone does

B.         Woven bone have clear layers; Lamellar bone is not organized into clear layers

C.         Woven bone is immature; Lamellar bone has mature compact and spongy bone trabeculae

D.         All of the above correctly defines the differences seen

6.         What is the biological significance of the epiphyseal plate fusing?

A.         Chondrocytes die

B.         Appositional growth is halted

C.         Interstitial growth is halted

D.         Adult height is reached

E.         None of the above

7.         Secondary ossification results in all of the following except

A.         Spongy bone is developed

B.         Epiphyses develop

C.         Yellow bone marrow is stored in the medullary cavity

8.         What is the last bone to fuse its epiphyseal plate?

A.         Clavicle

B.         Distal Radius

C.         Humerus head

D.         Distal tibia

SORT THE FOLLOWING BONES INTO THEIR MECHANISM OF FOMATION (INTRAMEMBRANOUS OR ENDOCHONDRAL)

Clavicle

Flat Bones of the Skull

Pelvis

Maxilla of the Face

Mandible

Femur

Vertebrae

Ulna

Answer 1

- mesenchymal tissue,hyaline cartilage

- woven bone lack compact bone

- all the above correctly define the differences

- primary ossification causes increase in diaphysis but not epiphysis

- red bone marrow is stored after secondary ossification

- adult height is reached after epiphyseal fusion

- bone health can be determined

- clavicle is the last to fuse

Endochondral ossification- vertebrae, ulna, pelvis ,femur, maxilla.

Intramembranous ossification- mandible, clavicle, flat bones of skull