ANP 1106 MIDTERM 1 EXAM AND PRACTICE
EXAM 2026/2027 WITH ACTUAL CORRECT
QUESTIONS AND VERIFIED DETAILED
ANSWERS |CURRENTLY TESTING
QUESTIONS AND SOLUTIONS|ALREADY
GRADED A+|NEWEST |BRAND NEW
VERSION|JUST RELEASED!!
What are perforating (Volkmann's) canals?
Canals lined with endosteum that occur at right angles to the central canal, connecting blood
vessels and nerves of the periosteum, medullary cavity, and central canal.
What are lacunae?
Small cavities that contain osteocytes.
What is the function of canaliculi?
Hairlike canals that connect lacunae to each other and to the central canal, enabling
communication between osteocytes.
What are interstitial lamellae?
Lamellae that are not part of an osteon; some fill gaps between forming osteons, while others
are remnants of osteons destroyed by remodeling.
What are circumferential lamellae?
Sheets of bone located just deep to the periosteum that extend around the entire
circumference of the shaft, helping long bones resist twisting.
What is the primary composition of bone?
1|Page
,Bone is made up of both organic components (like osteogenic cells and osteoid) and inorganic
components (like hydroxyapatites).
What is osteogenesis?
The process of bone tissue formation, including the formation of the bony skeleton in embryos
and postnatal bone growth.
What is endochondral ossification?
The process where bone forms by replacing a hyaline cartilage model, forming most of the
skeleton below the skull.
What is intramembranous ossification?
The process where bone develops from fibrous connective tissue membranes containing
mesenchymal cells, forming cranial bones and clavicles.
What are the four major steps of intramembranous ossification?
1. Ossification centers form. 2. Osteoid is secreted and calcified. 3. Woven bone is formed. 4.
Lamellar bone replaces woven bone.
What happens to the epiphyseal plate at the end of adolescence?
The epiphyseal plate becomes thinner and eventually fuses, marking the end of longitudinal
growth.
What is appositional growth?
The process by which bones grow in thickness in response to increased stress from muscle
activity or added weight.
What are the four major stages of bone repair?
1. Hematoma formation. 2. Fibrocartilaginous callus formation. 3. Bony callus formation. 4.
Bone remodeling.
What role does growth hormone play in bone growth?
2|Page
,It stimulates epiphyseal plate activity in infancy and childhood.
What is osteoporosis?
A group of diseases where bone resorption exceeds bone formation, leading to porous bones.
What factors contribute to osteoporosis?
Age, post-menopausal status, insufficient exercise, poor diet, smoking, and genetics.
What are bone markings?
Sites of muscle, ligament, and tendon attachment on external surfaces, areas involved in joint
formation, or conduits for blood vessels and nerves.
What are the three types of bone markings?
1. Projections (outward bulges). 2. Depressions. 3. Openings.
What is the significance of the epiphyseal plates?
They allow for longitudinal growth of long bones during childhood and adolescence.
What is the role of osteoblasts in bone development?
They secrete osteoid, which is the organic matrix of bone.
What is the role of osteoclasts in bone remodeling?
They break down bone matrix during the resorption process.
How does mechanical stress affect bone remodeling?
Mechanical and gravitational forces drive remodeling to keep bone strong.
What is the calcification front?
The abrupt transition zone between the osteoid seam and older mineralized bone.
What is the function of parathyroid hormone (PTH) in bone health?
It regulates calcium homeostasis and activates osteoclasts for bone resorption.
3|Page
, What happens during bone remodeling?
Bone deposit and resorption occur at the surfaces of both periosteum and endosteum.
What is the difference between spongy bone and compact bone?
Spongy bone contains trabeculae and is lighter, while compact bone is denser and forms the
outer layer.
What is the significance of trabeculae in spongy bone?
They are arranged along lines of stress to help resist stress and confer strength to bone.
What is the primary function of hydroxyapatites in bone?
They provide hardness and resistance to compression.
What are the two major divisions of the human skeleton?
Axial skeleton and appendicular skeleton
What bones make up the axial skeleton?
Bones of the skull, vertebral column, and rib cage
What bones are included in the appendicular skeleton?
Bones of the upper and lower limbs, and pectoral/pelvic girdles
How many bones are in the adult human skeleton?
206 bones
What percentage of body weight does the skeleton make up?
Approximately 20%
What are the two sets of bones that form the skull?
Cranial bones and facial bones
What is the function of cranial bones?
4|Page
EXAM 2026/2027 WITH ACTUAL CORRECT
QUESTIONS AND VERIFIED DETAILED
ANSWERS |CURRENTLY TESTING
QUESTIONS AND SOLUTIONS|ALREADY
GRADED A+|NEWEST |BRAND NEW
VERSION|JUST RELEASED!!
What are perforating (Volkmann's) canals?
Canals lined with endosteum that occur at right angles to the central canal, connecting blood
vessels and nerves of the periosteum, medullary cavity, and central canal.
What are lacunae?
Small cavities that contain osteocytes.
What is the function of canaliculi?
Hairlike canals that connect lacunae to each other and to the central canal, enabling
communication between osteocytes.
What are interstitial lamellae?
Lamellae that are not part of an osteon; some fill gaps between forming osteons, while others
are remnants of osteons destroyed by remodeling.
What are circumferential lamellae?
Sheets of bone located just deep to the periosteum that extend around the entire
circumference of the shaft, helping long bones resist twisting.
What is the primary composition of bone?
1|Page
,Bone is made up of both organic components (like osteogenic cells and osteoid) and inorganic
components (like hydroxyapatites).
What is osteogenesis?
The process of bone tissue formation, including the formation of the bony skeleton in embryos
and postnatal bone growth.
What is endochondral ossification?
The process where bone forms by replacing a hyaline cartilage model, forming most of the
skeleton below the skull.
What is intramembranous ossification?
The process where bone develops from fibrous connective tissue membranes containing
mesenchymal cells, forming cranial bones and clavicles.
What are the four major steps of intramembranous ossification?
1. Ossification centers form. 2. Osteoid is secreted and calcified. 3. Woven bone is formed. 4.
Lamellar bone replaces woven bone.
What happens to the epiphyseal plate at the end of adolescence?
The epiphyseal plate becomes thinner and eventually fuses, marking the end of longitudinal
growth.
What is appositional growth?
The process by which bones grow in thickness in response to increased stress from muscle
activity or added weight.
What are the four major stages of bone repair?
1. Hematoma formation. 2. Fibrocartilaginous callus formation. 3. Bony callus formation. 4.
Bone remodeling.
What role does growth hormone play in bone growth?
2|Page
,It stimulates epiphyseal plate activity in infancy and childhood.
What is osteoporosis?
A group of diseases where bone resorption exceeds bone formation, leading to porous bones.
What factors contribute to osteoporosis?
Age, post-menopausal status, insufficient exercise, poor diet, smoking, and genetics.
What are bone markings?
Sites of muscle, ligament, and tendon attachment on external surfaces, areas involved in joint
formation, or conduits for blood vessels and nerves.
What are the three types of bone markings?
1. Projections (outward bulges). 2. Depressions. 3. Openings.
What is the significance of the epiphyseal plates?
They allow for longitudinal growth of long bones during childhood and adolescence.
What is the role of osteoblasts in bone development?
They secrete osteoid, which is the organic matrix of bone.
What is the role of osteoclasts in bone remodeling?
They break down bone matrix during the resorption process.
How does mechanical stress affect bone remodeling?
Mechanical and gravitational forces drive remodeling to keep bone strong.
What is the calcification front?
The abrupt transition zone between the osteoid seam and older mineralized bone.
What is the function of parathyroid hormone (PTH) in bone health?
It regulates calcium homeostasis and activates osteoclasts for bone resorption.
3|Page
, What happens during bone remodeling?
Bone deposit and resorption occur at the surfaces of both periosteum and endosteum.
What is the difference between spongy bone and compact bone?
Spongy bone contains trabeculae and is lighter, while compact bone is denser and forms the
outer layer.
What is the significance of trabeculae in spongy bone?
They are arranged along lines of stress to help resist stress and confer strength to bone.
What is the primary function of hydroxyapatites in bone?
They provide hardness and resistance to compression.
What are the two major divisions of the human skeleton?
Axial skeleton and appendicular skeleton
What bones make up the axial skeleton?
Bones of the skull, vertebral column, and rib cage
What bones are included in the appendicular skeleton?
Bones of the upper and lower limbs, and pectoral/pelvic girdles
How many bones are in the adult human skeleton?
206 bones
What percentage of body weight does the skeleton make up?
Approximately 20%
What are the two sets of bones that form the skull?
Cranial bones and facial bones
What is the function of cranial bones?
4|Page
