bio 201 Snead state exam unit 2 bio
201 Snead state
What is the primary function of osteoblasts? - CORRECT ANSWER-creates bone
matrix
What is the primary function of osteocytes - CORRECT ANSWER-bone maintenance
Osteocytes produce components needed to - CORRECT ANSWER-maintain bone
tissue
Osteocytes sit in a space called a - CORRECT ANSWER-lacunae
The type of cartilage associated with bone function and development is - CORRECT
ANSWER-hyaline cartilage
Define cartilage - CORRECT ANSWER-Cartilage is a type of tough, flexible connective
tissue found in the body. It is softer and more flexible than bone and acts as a cushion
between bones to prevent them from rubbing against each other. Cartilage is found in
joints, the ears, nose, and other parts of the body, providing support and structure while
allowing for smooth movement
Describe an osteoclast's function - CORRECT ANSWER-Resorption and breaking down
of bone
Osteoclasts are responsible for - CORRECT ANSWER-breaking down old or damaged
bone tissue
How are osteocytes arranged in lamellar bone? - CORRECT ANSWER-in small spaces
called lacunae ( know all three different types of lamellae )
The lamellae in compact bone are oriented around - CORRECT ANSWER-Haversian or
osteonic canals
A passageway connecting neighboring osteocytes in an osteon is - CORRECT
ANSWER-canaliculi
Define osteons/haversian systems - CORRECT ANSWER-Found in compact bone
tissue. Each osteon consists of concentric layers of bone tissue called lamellae,
, surrounding a central canal called the Haversian canal. The Haversian canal contains
blood vessels, lymphatic vessels, and nerves that provide nutrients and oxygen to bone
cells. Osteocytes, the cells responsible for maintaining bone tissue, are housed in small
spaces called lacunae between the lamellae.
An osteon (haversian system) consists of ____________________ (make sure and
know each type of lamellae and where it is found) - CORRECT ANSWER-1. Circular
lamellae: These are circular plates of bone tissue found in compact bone, arranged
around blood vessels in the Haversian canals.
2. Concentric lamellae: These are layers of bone tissue that surround the Haversian
canals in compact bone, forming a series of concentric rings.
3. Interstitial lamellae: These are remnants of older concentric lamellae that have been
partially removed during bone remodeling, leaving irregularly shaped fragments in
between newer osteons.
How does the perforating (Volkmann's) canals run and what does it do? - CORRECT
ANSWER-they run perpendicular to the haversian canals and they help connect
multiple osteons together, allowing for nutrient/blood exchange between neighboring
osteons.
When a chondroblast becomes surrounded by matrix it is called - CORRECT ANSWER-
chondrocytes
What is Bone Matrix composed of - CORRECT ANSWER-collagen fibers &
hydroxyapatite
Define perichondrium - CORRECT ANSWER-covers cartilage except at articulations (
joints)
Peri- around
chondro- cartilage
What are the functions of the skeletal system? - CORRECT ANSWER-support,
protection, movement, storage, & blood cell production
Osteoblasts cells produce - CORRECT ANSWER-collagen & hydroxyapatite
lamellar bone is organized into - CORRECT ANSWER-thin sheets called lamella
The diaphysis is composed primarily of - CORRECT ANSWER-compact bone
Where is the diaphysis? - CORRECT ANSWER-shaft
What is an epiphysis? - CORRECT ANSWER-end of bone
What occurs at the epiphyseal plate - CORRECT ANSWER-growth plate-site of growth
in long bones - Hyaline cartilage; present until growth stop
201 Snead state
What is the primary function of osteoblasts? - CORRECT ANSWER-creates bone
matrix
What is the primary function of osteocytes - CORRECT ANSWER-bone maintenance
Osteocytes produce components needed to - CORRECT ANSWER-maintain bone
tissue
Osteocytes sit in a space called a - CORRECT ANSWER-lacunae
The type of cartilage associated with bone function and development is - CORRECT
ANSWER-hyaline cartilage
Define cartilage - CORRECT ANSWER-Cartilage is a type of tough, flexible connective
tissue found in the body. It is softer and more flexible than bone and acts as a cushion
between bones to prevent them from rubbing against each other. Cartilage is found in
joints, the ears, nose, and other parts of the body, providing support and structure while
allowing for smooth movement
Describe an osteoclast's function - CORRECT ANSWER-Resorption and breaking down
of bone
Osteoclasts are responsible for - CORRECT ANSWER-breaking down old or damaged
bone tissue
How are osteocytes arranged in lamellar bone? - CORRECT ANSWER-in small spaces
called lacunae ( know all three different types of lamellae )
The lamellae in compact bone are oriented around - CORRECT ANSWER-Haversian or
osteonic canals
A passageway connecting neighboring osteocytes in an osteon is - CORRECT
ANSWER-canaliculi
Define osteons/haversian systems - CORRECT ANSWER-Found in compact bone
tissue. Each osteon consists of concentric layers of bone tissue called lamellae,
, surrounding a central canal called the Haversian canal. The Haversian canal contains
blood vessels, lymphatic vessels, and nerves that provide nutrients and oxygen to bone
cells. Osteocytes, the cells responsible for maintaining bone tissue, are housed in small
spaces called lacunae between the lamellae.
An osteon (haversian system) consists of ____________________ (make sure and
know each type of lamellae and where it is found) - CORRECT ANSWER-1. Circular
lamellae: These are circular plates of bone tissue found in compact bone, arranged
around blood vessels in the Haversian canals.
2. Concentric lamellae: These are layers of bone tissue that surround the Haversian
canals in compact bone, forming a series of concentric rings.
3. Interstitial lamellae: These are remnants of older concentric lamellae that have been
partially removed during bone remodeling, leaving irregularly shaped fragments in
between newer osteons.
How does the perforating (Volkmann's) canals run and what does it do? - CORRECT
ANSWER-they run perpendicular to the haversian canals and they help connect
multiple osteons together, allowing for nutrient/blood exchange between neighboring
osteons.
When a chondroblast becomes surrounded by matrix it is called - CORRECT ANSWER-
chondrocytes
What is Bone Matrix composed of - CORRECT ANSWER-collagen fibers &
hydroxyapatite
Define perichondrium - CORRECT ANSWER-covers cartilage except at articulations (
joints)
Peri- around
chondro- cartilage
What are the functions of the skeletal system? - CORRECT ANSWER-support,
protection, movement, storage, & blood cell production
Osteoblasts cells produce - CORRECT ANSWER-collagen & hydroxyapatite
lamellar bone is organized into - CORRECT ANSWER-thin sheets called lamella
The diaphysis is composed primarily of - CORRECT ANSWER-compact bone
Where is the diaphysis? - CORRECT ANSWER-shaft
What is an epiphysis? - CORRECT ANSWER-end of bone
What occurs at the epiphyseal plate - CORRECT ANSWER-growth plate-site of growth
in long bones - Hyaline cartilage; present until growth stop
