Deck 6: Cartilage and Bone

Question 1

The extracellular matrix of cartilage,unlike that of most connective tissues,has unusually abundant molecules of:

A) Keratin
B) Type I collagen
C) Type III collagen
D) Type IV collagen
E) Water

Answer 1

E

Question 2

Osteocytes receive nutrient molecules directly from their contacts with:

A) Capillaries
B) Gap junctions on processes of other osteocytes
C) Lymphatic vessels
D) Osteoclasts
E) The periosteum

Answer 2

B

Question 3

In a typical epiphyseal (growth)plate,which zone of cartilage is closest to the marrow cavity?

A) Zone of reserve cartilage
B) Zone of proliferating cartilage
C) Zone of hypertrophic cartilage
D) Zone of calcifying cartilage
E) Zone of ossification

Answer 3

E

Question 4

Large,multinucleated cells adherent to the surface of a bone are called:

A) Foreign body giant cells
B) Monocytes
C) Osteoblasts
D) Osteoclasts
E) Osteocytes

Question 5

In bone,Volkmann's canals function to:

A) Allow fluid flow between bone and cartilage
B) Carry longitudinally oriented blood vessels of haversian systems (osteons)
C) Form tiny channels that allow communication between one osteocyte and another
D) Surround osteoclasts that migrate to the surface of a bone
E) Transfer blood between neighboring haversian systems

Question 6

Which cell type,in its most active form,has an elongated,polarized morphologic appearance and a basophilic cytoplasm?

A) Chondrocyte
B) Osteoblast
C) Osteoclast
D) Osteocyte
E) Periosteal fibroblast

Question 7

Fibrocartilage is most commonly found in:

A) Cartilage growth plates of immature bones
B) Joint surfaces covering bones
C) Intervertebral disks
D) The auricle of the external ear
E) The epiglottis of the larynx