Correctly Order the Following Key Steps in the Process of Endochondral

question 44

Multiple Choice

Correctly order the following key steps in the process of endochondral ossification. 1. Chondrocytes die.
2) Osteoblasts build the bone collar on the external surface of the bone.
3) Perichondrium is invaded by blood vessels.
4) In the primary ossification center, osteoblasts replace calcified cartilage with early spongy bone.
5) Perichondrial cells differentiate into osteogenic cells then into osteoblasts.

• A) 3, 5, 2, 1, 4
• B) 3, 1, 2, 3, 5
• C) 4, 3, 2, 1, 5
• D) 3, 1, 4, 5, 2

---

Definitions:

Somatic Nervous

The part of the peripheral nervous system that handles voluntary control of body movements through the control of skeletal muscles and also mediates sensory information from the external environment.

Physical Reactions

Bodily responses to stimuli, which can include reactions like sweating, shaking, or increased heart rate.

Sensory Stimulus

Any object or event that is input to the senses, leading to a response or recognition from the body or brain.

Reflex

An automatic, involuntary response to a stimulus without the involvement of conscious thought.