Bone Structure and Blood Supply Quiz

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65 Questions

Why is cartilage considered weaker than bone?

Due to being avascular and having limited healing ability

What is the main function of bones in the human body?

To store and release minerals like calcium and phosphate

Which type of bone marrow is responsible for hematopoiesis?

Red marrow

What type of bone formation develops flat bones of the skull, some facial bones, the mandible, and central portions of clavicle?

Intramembranous ossification

Where do nutrient arteries typically enter a bone?

At the growth end of the bone

What covers the vital organs such as ribs, skull, and vertebral column for protection?

Compact bone

Which type of bone lamellae is associated with concentric plates of bone forming osteons around the central canal?

Concentric lamellae

In bones, what strengthens the extracellular matrix by depositing minerals?

Calcification

What is the term for the formation and development of bone?

Ossification

Why is cartilage considered a precursor model for bone growth?

As it serves as a template for bone formation during fetal development

Which layer gives rise to skeletal, cardiac, smooth muscles, bone, blood, dermis, kidneys, ureters, adrenal cortex, and dura mater during development?

Mesoderm

Which type of artery enters the periosteum in the diaphysis through interosteonic canals?

Periosteal artery

What is the primary role of vitamin D in the body?

Promotes calcium and phosphorus absorption in the intestine

Which type of fracture is characterized by the bone being bent with one side fractured and the other side intact?

Greenstick fracture

During which phase of bone repair does the formation of fibrocartilaginous callus occur?

Restorative Phase

Which age group experiences a stage where bone resorption is greater than bone deposition?

Middle age adults

In what type of fracture does one end of the broken bone get driven into the other end?

Impacted fracture

Which vitamin deficiency can lead to decreased bone density due to the impaired synthesis of bone proteins?

Vitamin K deficiency

What is the main function of osteoclasts in bone remodeling?

Removal of Ca2+ and collagen fibers

Which type of bone is replaced at a higher rate annually?

Spongy bone at 20%

What is the impact of orthodontic braces on bone remodeling?

They increase stress on the bones

In osteoporosis, what is one factor that contributes to the condition?

Decreased hormone production

Which hormone stimulates osteoblast activity in adults?

Thyroid hormone

What is the role of Vitamin C in bone health?

Promotes collagen synthesis

What is the primary function of osteoprogenitors?

Develop into mature bone cells

Which of the following bone cells is responsible for resorbing bone matrix?

Osteoclasts

What is the main inorganic component responsible for providing rigidity to bone?

Calcium phosphate [Ca3(PO4)2]

Where are osteocytes located within bone tissue?

In lacunae, communicating via canaliculi

Which type of bone tissue is abundant in epiphysis and supports/protects red bone marrow?

Spongy bone

What is the basic structural and functional unit of mature compact bone?

Osteon

During endochondral ossification, what happens as chondrocytes hypertrophy?

They start to die due to calcification of ECM

Which stage of endochondral ossification involves the development of the primary ossification center?

Development of medullary cavity

What triggers osteoprogenitor cells to form osteoblasts during endochondral ossification?

Nutrient artery penetration

In endochondral ossification, what type of bone is formed when osteoblasts develop spongy bone around the primary ossification center?

Cancellous bone

Which type of growth in the cartilage model leads to an increase in width?

Appositional growth

When does the diaphysis start to calcify first during endochondral ossification?

6th-8th week

Which structure breaks down trabeculae and replaces most of the diaphysis with compact bone?

Osteoclasts

Which type of ossification develops flat bones of the skull, some facial bones, the mandible, and central portions of the clavicle?

Intramembranous ossification

Where do metaphyseal arteries supply blood in bones?

Between diaphysis and epiphyseal plate

Which layer of bone gives rise to epithelial tissues during embryonic development?

Endoderm

Where do nutrient arteries typically enter bones?

Periosteum through interosteonic canals

What is the primary nutrient artery pathway that supplies blood to bones away from the growth end?

Nutrient arteries

Which is responsible for forming concentric plates of bone around the central canal, creating osteons?

Concentric lamellae

What is the main source of skeletal, cardiac, and smooth muscles during embryonic development?

Mesoderm

What type of growth in bone length involves the replacement of cartilage by bone on the diaphyseal side of the epiphyseal plate?

Interstitial growth

Which zone of the epiphyseal plate is characterized by large chondrocytes undergoing mitosis, often forming a 'stack of coins' appearance?

Zone of proliferating cartilage

What type of bone growth occurs through the deposition of concentric lamellae around blood vessels by osteoblasts?

Appositional growth

Which type of cells differentiate into osteoblasts to secrete collagen fibers and organic molecules for appositional growth in bones?

Periosteal cells

In bone remodeling, which cells destroy bone tissue in the medullary cavity and contribute to increasing the inner diameter as the outer width grows?

Osteoclasts

Which type of growth contributes to an increase in the width of bones and occurs throughout the lifespan?

Appositional growth

What is the final zone in the epiphyseal plate where minerals are deposited, chondrocytes undergo apoptosis, and bone tissue is formed?

Zone of calcified cartilage

Which type of tissues are bones primarily categorized as?

Connective

Where do chondrocytes, the functional cells of cartilage, reside?

Lacunae

Which function of bones involves the covering and protection of vital organs?

Protection

What is the main source and storage of calcium and phosphates in bones?

Calcification

Which type of bone tissue is more flexible and resilient compared to bone?

Hyaline cartilage

Where does hemopoiesis, the production of new red blood cells, primarily occur in adults?

Red bone marrow

What is the organic component responsible for maintaining bone strength and flexibility?

Collagen fibers

Which bone classification is associated with bones that are longer than they are wide?

Long bones

What is the main role of Vitamin D in bone health?

Facilitates Ca2+ and phosphorus absorption in the intestine

Which type of fracture is characterized by one end of the bone being driven into the other?

Impacted fracture

During which phase of bone repair does the formation of a fibrocartilaginous and bony callus occur?

Restorative Phase

What type of bone fracture is characterized by partial bending of the bone with one side fractured and the other side intact?

Greenstick fracture

Which group experiences a stage where bone resorption exceeds bone deposition?

Middle-aged individuals

What happens during the Bone Remodeling Phase of bone repair?

Osteoclasts absorb dead bone portions

Test your knowledge on the structure of bones, including lamellae (sheets of compact bone) and their blood and nerve supply. Learn about the different types of lamellae and how arteries and veins supply blood to bones.

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