Page 1 of 131
NATIONAL BOARD CERTIFICATION
ORTHOPAEDIC TECHNOLOGIST (OTC®)
COMPREHENSIVE PRACTICE QUESTION
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WITH DETAILED RATIONALES
itsjereguides
# SECTION 1: ANATOMY & PHYSIOLOGY OF THE MUSCULOSKELETAL SYSTEM
## 1.1 Bone Structure & Classification
**Question 1**
Which type of bone cell is responsible for bone resorption and the breakdown of mineralized
bone?
A) Osteoblast
B) Osteocyte
C) Osteoclast
D) Chondrocyte
**Correct Answer: C**
**Rationale:** Osteoclasts are large, multinucleated cells that break down bone minerals
through a process called resorption. They are essential for bone remodeling, calcium
homeostasis, and the repair of microfractures. Osteoblasts build bone, osteocytes are mature
bone cells that maintain bone matrix, and chondrocytes are cartilage cells.
,Page 2 of 131
**Distractor Analysis:**
- **A:** Osteoblasts are bone-forming cells that synthesize bone matrix.
- **B:** Osteocytes are mature osteoblasts that maintain the bone matrix.
- **D:** Chondrocytes are cells found in cartilage, not bone.
---
**Question 2**
The shaft of a long bone is properly termed the:
A) Epiphysis
B) Diaphysis
C) Metaphysis
D) Periosteum
**Correct Answer: B**
**Rationale:** The diaphysis is the shaft or central cylindrical portion of a long bone. It is
composed primarily of compact bone and contains the medullary cavity. The epiphyses are the
ends of the bone, the metaphysis is the growth plate region, and the periosteum is the outer
fibrous covering.
**Distractor Analysis:**
- **A:** The epiphysis is the end of a long bone.
- **C:** The metaphysis is the region between the diaphysis and epiphysis.
- **D:** The periosteum is the outer membrane covering the bone.
,Page 3 of 131
**Question 3**
Which of the following is classified as an irregular bone?
A) Femur
B) Vertebra
C) Scapula
D) Patella
**Correct Answer: B**
**Rationale:** Irregular bones have complex shapes that do not fit into other categories.
Vertebrae and facial bones are classified as irregular bones. The femur is a long bone, the scapula
is a flat bone, and the patella is a sesamoid bone.
**Distractor Analysis:**
- **A:** The femur is a long bone.
- **C:** The scapula is a flat bone.
- **D:** The patella is a sesamoid bone.
---
**Question 4**
How many vertebrae are present in the human spinal column?
A) 24
B) 26
C) 33
D) 31
, Page 4 of 131
**Correct Answer: C**
**Rationale:** The human vertebral column consists of 33 vertebrae: 7 cervical, 12 thoracic, 5
lumbar, 5 sacral (fused), and 4 coccygeal (fused). The sacral and coccygeal vertebrae are fused in
adults, resulting in 26 individual bones.
**Distractor Analysis:**
- **A:** 24 is the number of presacral vertebrae (cervical, thoracic, lumbar).
- **B:** 26 is the number of individual bones in the adult vertebral column.
- **D:** 31 is the number of spinal nerve pairs.
---
**Question 5**
Which two processes are located just below the head of the humerus?
A) Medial and lateral epicondyles
B) Greater and lesser tuberosities
C) Coracoid and acromion processes
D) Olecranon and coronoid processes
**Correct Answer: B**
**Rationale:** The greater and lesser tuberosities are bony processes located just below the
anatomical neck of the humerus. They serve as attachment sites for the rotator cuff muscles. The
surgical neck, located below the tuberosities, is a common site for fractures.
NATIONAL BOARD CERTIFICATION
ORTHOPAEDIC TECHNOLOGIST (OTC®)
COMPREHENSIVE PRACTICE QUESTION
BANK FOR 2026-2027 | 200+ QUESTIONS
WITH DETAILED RATIONALES
itsjereguides
# SECTION 1: ANATOMY & PHYSIOLOGY OF THE MUSCULOSKELETAL SYSTEM
## 1.1 Bone Structure & Classification
**Question 1**
Which type of bone cell is responsible for bone resorption and the breakdown of mineralized
bone?
A) Osteoblast
B) Osteocyte
C) Osteoclast
D) Chondrocyte
**Correct Answer: C**
**Rationale:** Osteoclasts are large, multinucleated cells that break down bone minerals
through a process called resorption. They are essential for bone remodeling, calcium
homeostasis, and the repair of microfractures. Osteoblasts build bone, osteocytes are mature
bone cells that maintain bone matrix, and chondrocytes are cartilage cells.
,Page 2 of 131
**Distractor Analysis:**
- **A:** Osteoblasts are bone-forming cells that synthesize bone matrix.
- **B:** Osteocytes are mature osteoblasts that maintain the bone matrix.
- **D:** Chondrocytes are cells found in cartilage, not bone.
---
**Question 2**
The shaft of a long bone is properly termed the:
A) Epiphysis
B) Diaphysis
C) Metaphysis
D) Periosteum
**Correct Answer: B**
**Rationale:** The diaphysis is the shaft or central cylindrical portion of a long bone. It is
composed primarily of compact bone and contains the medullary cavity. The epiphyses are the
ends of the bone, the metaphysis is the growth plate region, and the periosteum is the outer
fibrous covering.
**Distractor Analysis:**
- **A:** The epiphysis is the end of a long bone.
- **C:** The metaphysis is the region between the diaphysis and epiphysis.
- **D:** The periosteum is the outer membrane covering the bone.
,Page 3 of 131
**Question 3**
Which of the following is classified as an irregular bone?
A) Femur
B) Vertebra
C) Scapula
D) Patella
**Correct Answer: B**
**Rationale:** Irregular bones have complex shapes that do not fit into other categories.
Vertebrae and facial bones are classified as irregular bones. The femur is a long bone, the scapula
is a flat bone, and the patella is a sesamoid bone.
**Distractor Analysis:**
- **A:** The femur is a long bone.
- **C:** The scapula is a flat bone.
- **D:** The patella is a sesamoid bone.
---
**Question 4**
How many vertebrae are present in the human spinal column?
A) 24
B) 26
C) 33
D) 31
, Page 4 of 131
**Correct Answer: C**
**Rationale:** The human vertebral column consists of 33 vertebrae: 7 cervical, 12 thoracic, 5
lumbar, 5 sacral (fused), and 4 coccygeal (fused). The sacral and coccygeal vertebrae are fused in
adults, resulting in 26 individual bones.
**Distractor Analysis:**
- **A:** 24 is the number of presacral vertebrae (cervical, thoracic, lumbar).
- **B:** 26 is the number of individual bones in the adult vertebral column.
- **D:** 31 is the number of spinal nerve pairs.
---
**Question 5**
Which two processes are located just below the head of the humerus?
A) Medial and lateral epicondyles
B) Greater and lesser tuberosities
C) Coracoid and acromion processes
D) Olecranon and coronoid processes
**Correct Answer: B**
**Rationale:** The greater and lesser tuberosities are bony processes located just below the
anatomical neck of the humerus. They serve as attachment sites for the rotator cuff muscles. The
surgical neck, located below the tuberosities, is a common site for fractures.
