1. chapter 6-1: Skeletal system intro
Essential Question:
List all 5 physiological functions of bone.
chapter 6-1: Skeletal system intro
Learning Target
Identify the functions of bone.
List the three types of skeletal cartilage.
Define apostitional and interstital cartilage growth.

2. announcements Chapter Test Retake (>70%)
Completed stamp sheet assignments
Retake score will be permanent
No retakes on Chapter 7 Bone Practical
Class website will be updated today
Stamp Sheet will be distributed tomorrow
Quiz 1 scheduled for: Friday, 10/19/18
Quiz 2 scheduled for: Tuesday, 10/23/18
Chapter 6 Test scheduled for: Thursday, 10/25/18
Last Day to Stamp Chapter 6: Wednesday, 10/24/18

3. Don’t forget to chunk your notes!

4. Overview: skeletal system
Our skeletal system is made of bone and cartilage.

5. Overview: skeletal system
Our first skeleton is made of cartilage.

6. Overview: skeletal system
As we age, most cartilage turns to bone, but some remains in the adult skeleton.

7. Overview: skeletal system
In adults, cartilage is found where flexibility is needed.

8. Overview: skeletal system
Cartilage also connects bone and is found in the joints.

9. Don’t forget to chunk your notes!

10. Physiology: Bones (5)
Support: form the framework that supports the body and cradles soft organs
Protection: provide a protective case for the brain, spinal cord, and vital organs
Movement: provide levers for muscles
Mineral Storage: reservoir for minerals, especially calcium and phosphorus. Bones also store fat
Blood Cell Formation: hematopoiesis occurs within the red marrow cavities of bones

11. Don’t forget to chunk your notes!

12. Skeletal cartilage contains no blood vessels or nerves.

13. There are 3 types: hyaline, elastic, and fibrocartilage.
Skeletal cartilage
There are 3 types: hyaline, elastic, and fibrocartilage.

14. Don’t forget to chunk your notes!

15. hyaline cartilage Provides support, flexibility, and resilience
Is the most abundant skeletal cartilage

16. hyaline cartilage
Hyaline Cartilage is found in these types of cartilage:
Articular
Costal
Respiratory
Nasal

17. Articular: covers the ends of long bones
Hyaline cartilage
Articular: covers the ends of long bones

18. Costal: connects the ribs to the sternum
Hyaline cartilage
Costal: connects the ribs to the sternum

19. Respiratory: makes up larynx, reinforces air passages
Hyaline cartilage
Respiratory: makes up larynx, reinforces air passages

20. Nasal: supports the nose
Hyaline cartilage
Nasal: supports the nose

21. Don’t forget to chunk your notes!

22. elastic cartilage
Similar to hyaline cartilage, but contains elastic fibers
Found in the external ear and the epiglottis

23. Don’t forget to chunk your notes!

24. fibroCartilage Highly compressed with great tensile strength
Contains collagen fibers

25. Found in menisci of the knee and in intervertebral discs
fibroCartilage
Found in menisci of the knee and in intervertebral discs

26. Don’t forget to chunk your notes!

27. Growth of Cartilage Appositional: from the outside
There are 2 ways cartilage can grow:
Appositional: from the outside
Interstitial: from the inside

28. Growth of Cartilage
Appositional: (from the outside) cells in the perichondrium secrete matrix against the external face of existing cartilage

29. Growth of Cartilage
Interstitial: (from the inside) lacunae-bound chondrocytes inside the cartilage divide and secrete new matrix, expanding the cartilage from within

30. Growth of Cartilage Calcification of cartilage occurs:
During normal bone growth
During old age