Lecture 3: Cartilage And Bone

Question 1

Why would you expect the brachial bones of a weightlifter to be thicker and heavier than those of a jogger?

Answer 1

Larger muscles apply more stress to bones.

Question 2

People with osteoporosis have ____________ working excessively to break down bone without ______________ to rebuild it.

Answer 2

Osteoclasts, osteoblasts

Question 3

The types of collagen associated primarily with cartilage are:

Answer 3

2, 6, 9, 10, 11

Question 4

Appositional growth:

Answer 4

Is growth mechanism typically found in cartilage and in bone

Question 5

Osteocytes:

Answer 5

Are encased in bone

Question 6

Isogenous groups are clusters of ________ in cartilage tissue

Answer 6

Chondrocytes

Question 7

Which of the following are characteristics of an articular joint surface?

Select one:

a. no periosteum
b. no perichondrium
c. no collagen fibers
d. A and B

Answer 7

D. No periosteum nor perichondrium

Question 8

A primary ossification center forms when:

Answer 8

Blood vessels grow into the diaphysis

Question 9

If a patient had low levels of calcitonin, what would you expect to happen to their bones?

Answer 9

Their bone density would be lower due to lack of osteoblast activation.

Question 10

Sox 9:

Answer 10

Is used to make chondroblasts from mesenchymal cells.