Normal Bone cell is known as?

Appeared in: AIIMS Rishikesh & Jodhpur NO - 2017

Explanation

Osteocytes are mature bone cells that have differentiated from osteoblasts.
They are the most abundant cell type in mature bone tissue.
Their primary function is to maintain the bone matrix, sense mechanical strain, and regulate the activity of other bone cells (osteoblasts and osteoclasts).

Option B: Osteoblasts are bone-forming cells, not the mature, stable cells that maintain the bone. They are considered the 'young' or 'builder' cells.
Option C: Osteoclasts are responsible for bone resorption or breakdown. Their function is opposite to that of maintaining the bone structure.
Option D: Monocytes are a type of white blood cell and are part of the immune system. They are not a primary bone cell, although they are precursors from which osteoclasts are formed.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Types and functions of bone cells as background academic context rather than a clinical decision trigger.
Understanding the balance between osteoblast and osteoclast activity is fundamental to comprehending metabolic bone diseases.
In osteoporosis, there is an imbalance where osteoclast activity (bone resorption) outpaces osteoblast activity (bone formation), leading to decreased bone density and increased fracture risk.
During fracture healing, all three bone cells play a coordinated role: osteoclasts clear debris, and osteoblasts form a new bone callus which then remodels with the help of both cell types.

How to Approach the Question

First, identify the key term in the question: 'Normal Bone cell'. This implies a mature, stable cell that constitutes the main cellular component of adult bone.
Next, review the options provided, which are all cell types.
Recall the specific functions of each cell related to bone. Osteoblasts build bone, osteoclasts break down bone, and osteocytes maintain it.
Eliminate 'Monocyte' as it is primarily an immune cell, not a structural bone cell.
Differentiate between the remaining options. Since the question asks for the 'normal' or mature cell, 'Osteocyte' is the most fitting description, as it represents the final, stable state of a bone cell within the matrix.

Concept Tested & Keywords

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E6 Medicine Harrison 22e Part 2 p. 1163-1165

E6 Medicine Davidson Principles Practice 24e p. 1005-1007

E6 Physiology Ganong 27e Vol 2 Part 2 p. 143-145

Practise the full AIIMS Rishikesh & Jodhpur NO - 2017

Attempt every question from this paper in a timed mock, then review the full solution for each one.