Activity 6

Question 1

How many bones in the human skeleton? In the Axial? In the Appendicular?

Answer 1

206 in the human skeleton
80 in the axial
126 in the appendicular

Question 2

what bones does the axial skeleton consist of?

Answer 2

skull, vertebral column, sternum, ribs

Question 3

What are the 6 bone shapes

Answer 3

1. Long bone
2. short bone
3. flat bone
4. pneumatized bone
5. sesamoid bone
6. sutural (wormian) bone
7. Irregular

Question 4

What are the two types of osseous tissue?

Answer 4

Spongy
Compact

Question 5

What are osteons? what do they do?

Answer 5

precise and structured organization of compact bone

Provide strength to the bones

Question 6

What is the purpose of the honeycomb like structure of spongy bone?

Answer 6

transmit weight, form cavities, make the bone more lightweight

Question 7

What are the two methods of bone growth?

Answer 7

Interstitial and Appositional

Question 8

What do all connective tissues derive from?

Answer 8

Mesenchyme- embryonic connective tissue

Question 9

Intramembranous ossification
examples?
How does it occur? Grow?

Answer 9

• Occurs in dermal bones
• flat bones of the skull, bones that develop in muscle or tendons- sesamoid bones
• occurs directly from mesenchyme without, formation of initial hyaline cartilage model
• only grows by appositional growth
• tracing

Question 10

Endochondral ossification
examples?
How does it occur? Grow?

Answer 10

• most bones, long bones
  femur, humerus, phalanges
• bone tissue replaces initial hyaline cartilage model, hyaline cartilage remains as articular cartilage
• grows by both appositional and interstitial growth
  -tracing