Bone Remodeling

Estrogen plays a role in bone remodeling by:

• increasing bone resorption

• decreasing bone resorption

• having no effect on bone resorption

• increasing bone formation

Which cells act as 'The Builders' in bone remodeling?

• Osteoblasts

• Osteoclasts

• Chondrocytes

• Fibroblasts

The body monitors bone density through the actions of which cells?

• Osteoblasts and osteoclasts

• Red blood cells

• White blood cells

• Neurons

What is the main purpose of bone remodeling?

• To make bones grow longer

• To constantly replace old bone with new bone

• To stop bones from changing over time

• To make bones softer

What role does estrogen play in bone remodeling?

• It acts as a worker that builds new bone

• It serves as a messenger that helps balance bone formation and breakdown

• It works as a regulator by providing calcium to bones

• It functions as a demolisher, breaking down old bone

Which bone cell is responsible for breaking down old or damaged bone?

• Osteoblasts

• Osteoclasts

• Osteocytes

• Fibroblasts

What happens to osteoclast activity when estrogen levels drop?

• It decreases, causing bones to get stronger

• It stays the same, keeping bone remodeling balanced

• It increases, leading to more bone breakdown

• It stops completely

What is the role of calcium and vitamin D in bone remodeling?

• They act as messengers, delivering signals to osteoclasts

• They function as regulators, ensuring bones have enough minerals to stay strong

• They break down old bone to release energy

Which of the following is NOT part of the bone remodeling process?

• A) Resorption (breaking down old bone)

• B) Formation (building new bone)

• C) Muscle contraction

• D) Mineralization (hardening new bone)

What is the name of the system that monitors bone density and adjusts bone formation or breakdown?

• The circulatory system

• The feedback loop

• The digestive system

• The nervous system