19_Skeletal System Bone and Cartilage Tissue

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Which type of tissue is the skeletal system composed of?

Solid supportive connective tissue

What is the function of the axial skeleton?

Includes all bones of the head, neck, chest, and back

Which type of growth occurs within the cartilage?

Interstitial

What are the cells in bone tissue called?

<p>Osteocytes</p> Signup and view all the answers

Which type of connective tissue is avascular?

<p>Cartilage</p> Signup and view all the answers

What is the function of the skeletal system in relation to blood cells?

<p>Produces blood cells</p> Signup and view all the answers

Which division of the skeletal system includes all bones of the upper and lower limbs?

<p>Appendicular skeleton</p> Signup and view all the answers

What is the composition of the extracellular matrix of cartilage?

<p>Semisolid</p> Signup and view all the answers

Which type of growth occurs along the outside edge of cartilage?

<p>Appositional</p> Signup and view all the answers

What type of connective tissue is the ligament?

<p>Dense regular connective tissue</p> Signup and view all the answers

Which type of cartilage is found in the external ear and epiglottis?

<p>Elastic cartilage</p> Signup and view all the answers

What is the main function of osteoclasts in bone tissue?

<p>Bone resorption</p> Signup and view all the answers

Which type of bone tissue contains osteons and central canals?

<p>Compact bone</p> Signup and view all the answers

What is the function of periosteum in long bones?

<p>Bone repair and remodeling</p> Signup and view all the answers

Which type of bone is categorized based on its shape rather than its function?

<p>Irregular bone</p> Signup and view all the answers

What is the main composition of the bone matrix?

<p>Collagen fibers and inorganic salt crystals</p> Signup and view all the answers

Where does hemopoiesis occur in adults?

<p>Red bone marrow</p> Signup and view all the answers

Which cell type is responsible for generating new extracellular matrix in cartilage?

<p>Chondrocytes</p> Signup and view all the answers

What type of tissue provides weaker but flexible and resilient support for soft tissues and articulations?

<p>Cartilage</p> Signup and view all the answers

Which part of a long bone contains the growth plate?

<p>Metaphysis</p> Signup and view all the answers

Which type of ossification produces most cranial bones and clavicles?

<p>Endochondral ossification</p> Signup and view all the answers

How do bones grow in width even after the epiphyseal plate has ossified?

<p>Osteocytes lay down bone matrix and osteoclasts expand the medullary cavity</p> Signup and view all the answers

What is the primary cause of rickets in children?

<p>Vitamin D deficiency</p> Signup and view all the answers

What is the condition characterized by bone tissue loss, weakening bones, and increased risk of fractures?

<p>Osteoporosis</p> Signup and view all the answers

Which condition is caused by excessive growth hormone production and leads to the abnormal growth of flat bones in adulthood?

<p>Acromegaly</p> Signup and view all the answers

What is the process involving deposition of new bone and removal of old bone, with different rates of formation and resorption at different life stages?

<p>Bone remodeling</p> Signup and view all the answers

Which type of ossification produces bones at the base of the skull and long bones?

<p>Intramembranous ossification</p> Signup and view all the answers

What is the condition of abnormal endochondral ossification, leading to short-limbed dwarfism due to a mutation affecting the growth of long bones?

<p>Achondroplasia</p> Signup and view all the answers

What is the name for the series of steps in healing that bone fractures go through?

<p>Fracture hematoma, fibrocartilaginous callus, bony callus, bone remodeling</p> Signup and view all the answers

What do bone markings include, each serving specific functions related to joint formation, tendon and ligament attachment, blood vessel and nerve passage, and air pockets within bones?

<p>Articulating surfaces, elevations, depressions, and openings</p> Signup and view all the answers

Chondrocytes in cartilage only undergo mitotic division during embryonic development

<p>False</p> Signup and view all the answers

Spongy bone is dense and heavy, with a solid network of osteons

<p>False</p> Signup and view all the answers

The adult skeleton consists of 206 bones, categorized into long, short, flat, irregular, and round bones based on their sizes

<p>False</p> Signup and view all the answers

Compact bone contains a lattice-like network of trabeculae and osteocytes in lacunae

<p>False</p> Signup and view all the answers

Osteogenic, osteoblasts, osteocytes, and osteoclasts are responsible for bone maintenance and resorption

<p>True</p> Signup and view all the answers

Hyaline, fibrocartilage, and elastic cartilage have the same characteristics and locations in the body

<p>False</p> Signup and view all the answers

The bone matrix is composed of collagen fibers and inorganic salt crystals, providing hardness, strength, and flexibility to bones

<p>True</p> Signup and view all the answers

Endosteum is essential for bone growth, repair, and remodeling

<p>True</p> Signup and view all the answers

The gross anatomy of a long bone includes the epiphysis, metaphysis, and diaphysis

<p>True</p> Signup and view all the answers

Hemopoiesis occurs in the bone marrow, providing the formation of blood cells

<p>True</p> Signup and view all the answers

True or false: Bones can only grow in length through interstitial growth, and not in width through appositional growth.

<p>False</p> Signup and view all the answers

True or false: Osteoporosis is characterized by bone tissue gain and decreased risk of fractures.

<p>False</p> Signup and view all the answers

True or false: Rickets is a bone disease caused by vitamin D deficiency and is characterized by bowed legs, stunted growth, and bone pain.

<p>True</p> Signup and view all the answers

True or false: Achondroplasia is a condition of abnormal intramembranous ossification, leading to short-limbed dwarfism.

<p>False</p> Signup and view all the answers

True or false: Bone remodeling is a static process with consistent rates of formation and resorption throughout life.

<p>False</p> Signup and view all the answers

True or false: Acromegaly, caused by excessive growth hormone production, leads to the abnormal growth of long bones in adulthood.

<p>False</p> Signup and view all the answers

True or false: Endochondral ossification produces most cranial bones and clavicles.

<p>True</p> Signup and view all the answers

True or false: Intramembranous ossification produces bones at the base of the skull and long bones.

<p>False</p> Signup and view all the answers

True or false: Bone fractures go through a series of healing steps including the formation of a fracture hematoma, a fibrocartilaginous callus, a bony callus, and bone remodeling.

<p>True</p> Signup and view all the answers

True or false: Bone markings include articulating surfaces, elevations, depressions, and openings, each serving specific functions related to joint formation, tendon and ligament attachment, blood vessel and nerve passage, and air pockets within bones.

<p>True</p> Signup and view all the answers

True or false: The axial skeleton includes all bones of the upper and lower limbs.

<p>False</p> Signup and view all the answers

True or false: Cartilage is a dense regular connective tissue.

<p>False</p> Signup and view all the answers

True or false: Bone is composed of a semi-rigid extracellular matrix.

<p>False</p> Signup and view all the answers

True or false: Chondrocytes produce extracellular matrix which is solid.

<p>False</p> Signup and view all the answers

True or false: Osteocytes are avascular cells found in cartilage.

<p>False</p> Signup and view all the answers

True or false: The growth of cartilage occurs in only one type: interstitial.

<p>False</p> Signup and view all the answers

True or false: The skeletal system does not store and release minerals and fat.

<p>False</p> Signup and view all the answers

True or false: Ligaments are composed of solid supportive connective tissue.

<p>False</p> Signup and view all the answers

True or false: The adult skeleton consists of 206 bones, categorized into long, short, flat, irregular, and round bones based on their sizes.

<p>True</p> Signup and view all the answers

True or false: Bone fractures go through a series of healing steps including the formation of a fracture hematoma, a fibrocartilaginous callus, a bony callus, and bone resorption.

<p>False</p> Signup and view all the answers

Cartilage is composed of solid extracellular matrix and is vascular.

<p>False</p> Signup and view all the answers

The axial skeleton includes all bones of the upper and lower limbs.

<p>False</p> Signup and view all the answers

The growth of cartilage occurs only along the outside edge (appositional).

<p>False</p> Signup and view all the answers

Chondrocytes are locked inside spaces called lacunae during the production of extracellular matrix.

<p>True</p> Signup and view all the answers

The skeletal system does not play a role in the production of blood cells.

<p>False</p> Signup and view all the answers

The bone tissue is composed of osteons and central canals.

<p>True</p> Signup and view all the answers

The function of ligaments is to provide support for soft tissues and articulations.

<p>True</p> Signup and view all the answers

The skeletal system does not store and release minerals and fat.

<p>False</p> Signup and view all the answers

The appendicular skeleton includes all bones of the head, neck, chest, and back.

<p>False</p> Signup and view all the answers

The function of the skeletal system is limited to supporting the body and facilitating movement.

<p>False</p> Signup and view all the answers

Study Notes

Bone Growth and Disorders

  • There are three types of ossification: endochondral ossification, which produces most cranial bones and clavicles, and intramembranous ossification, which produces bones at the base of the skull and long bones.
  • Bones can grow in width through appositional growth, even after the epiphyseal plate has ossified, as osteocytes lay down bone matrix and osteoclasts expand the medullary cavity.
  • Bone remodeling is a continual process involving deposition of new bone and removal of old bone, with different rates of formation and resorption at different life stages.
  • Bone fractures go through a series of steps in healing, including the formation of a fracture hematoma, a fibrocartilaginous callus, a bony callus, and bone remodeling.
  • Achondroplasia is a condition of abnormal endochondral ossification, leading to short-limbed dwarfism due to a mutation affecting the growth of long bones.
  • Acromegaly, caused by excessive growth hormone production, leads to the abnormal growth of flat bones in adulthood, resulting in enlarged head, hands, and feet.
  • Rickets is a condition of weak or soft bones in children, often caused by vitamin D deficiency, leading to symptoms such as bowed legs, stunted growth, and bone pain.
  • Osteoporosis is a bone disease characterized by bone tissue loss, weakening bones, and increased risk of fractures, particularly when osteoclast activity exceeds osteoblast activity.
  • Bone markings include articulating surfaces, elevations, depressions, and openings, each serving specific functions related to joint formation, tendon and ligament attachment, blood vessel and nerve passage, and air pockets within bones.

Bone Growth and Disorders

  • There are three types of ossification: endochondral ossification, which produces most cranial bones and clavicles, and intramembranous ossification, which produces bones at the base of the skull and long bones.
  • Bones can grow in width through appositional growth, even after the epiphyseal plate has ossified, as osteocytes lay down bone matrix and osteoclasts expand the medullary cavity.
  • Bone remodeling is a continual process involving deposition of new bone and removal of old bone, with different rates of formation and resorption at different life stages.
  • Bone fractures go through a series of steps in healing, including the formation of a fracture hematoma, a fibrocartilaginous callus, a bony callus, and bone remodeling.
  • Achondroplasia is a condition of abnormal endochondral ossification, leading to short-limbed dwarfism due to a mutation affecting the growth of long bones.
  • Acromegaly, caused by excessive growth hormone production, leads to the abnormal growth of flat bones in adulthood, resulting in enlarged head, hands, and feet.
  • Rickets is a condition of weak or soft bones in children, often caused by vitamin D deficiency, leading to symptoms such as bowed legs, stunted growth, and bone pain.
  • Osteoporosis is a bone disease characterized by bone tissue loss, weakening bones, and increased risk of fractures, particularly when osteoclast activity exceeds osteoblast activity.
  • Bone markings include articulating surfaces, elevations, depressions, and openings, each serving specific functions related to joint formation, tendon and ligament attachment, blood vessel and nerve passage, and air pockets within bones.

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