Podcast
Questions and Answers
What happens to bone density when increased physical stress is applied to it?
What happens to bone density when increased physical stress is applied to it?
Which effect is demonstrated when pressure on a tissue generates a slight electric charge?
Which effect is demonstrated when pressure on a tissue generates a slight electric charge?
What is the primary role of Wolff's Law in relation to bone?
What is the primary role of Wolff's Law in relation to bone?
What occurs to bone in response to decreased physical stress?
What occurs to bone in response to decreased physical stress?
Signup and view all the answers
Where is calcium deposited during excessive stress on bones at the joint surface?
Where is calcium deposited during excessive stress on bones at the joint surface?
Signup and view all the answers
What is one outcome of applying excessive physical stress to a bone?
What is one outcome of applying excessive physical stress to a bone?
Signup and view all the answers
Study Notes
Wolff's Law
- Wolff's Law describes how bone adapts to stress.
- Increased physical stress on bone results in increased bone density (more bony matrix).
- Decreased physical stress on bone results in decreased density (less bony matrix).
Bone Structure
- Bones have an outer layer of compact (dense) bone and an inner layer of spongy (cancellous) bone.
- Long bones have an epiphysis at each end, a diaphysis (shaft) in the middle, articular cartilage at the ends and an epiphyseal line (or plate) between the two.
- Spongy bone is located in the interior of the bone, and the outer layer is called compact bone.
- Features in a long bone are the medullary cavity, nutrient foramen, endosteum, periosteum, and the epiphyseal line/plate.
Piezoelectric effect
- Pressure on bone creates an electrical charge (piezoelectric effect).
- Osteoblasts (bone building cells) are activated by this.
- Increased electrical charge encourages more bone growth in that specific area, and osteoclasts are unable to remove this bone.
- Calcium (Ca++) is then deposited in response and the bone grows denser.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers Wolff's Law, which explains how bone adapts to stress and the structural aspects of bones. It discusses the differences between compact and spongy bone, and the role of the piezoelectric effect in bone growth. Test your knowledge on these foundational concepts in bone biology.
